One of the best automotive videos I've watched! Your expierience and knowledge is obvious but you also have a gift for teaching. I was ASE cert with 25 years expierience. I owned an auto and truck repair shop and employed 15 full time techs. My shop was 25k square feet and had a machine shop and a partitioned body shop. I owned a separate Corp that was a H D and light duty towing Co. Also had Volvo, White, GMC dealer affiliation authorization. I started in a 2 car garge at my childhood home. I lost it to leukemia but only mention it, 1) because it was a source of pride and 2) because you mentioned health risks when using chemicals. I was proud of you for that. For all those that don't take it serious, my leukemia was likley caused by siphoning gas as a kid when I worked for a bus co. On several occasions I swallowed a bit. I have been suffering the effects for 35 years of which the last 12 included bone marrow cancer. My leukemia was a precursor to BMC so I knew that day was coming. If your reading this, DONT DO IT! BTW your video brought back memories, good ones. I too was a perfectionist, (Of coarse didn't always succeed). I used the exact method you did and was taught by a master machinist. Thanks
Joe Mikos i cover myself in this crap all day working in cars i know the damage i know the danger but never think about it like most things in my life. i hope you get well and recover.
Joe Mikos i cover myself in this crap all day working in cars i know the damage i know the danger but never think about it like most things in my life. i hope you get well and recover.
Joe Mikos YOU was SAE and YOU learned from THAT? Guides need replacing using special tools. Seats require special tools. If he wants to pull the head back off at HIS expense, that's him!
Thank you so much for this video . With limited mechanical experience I was able to rebuild the head on my food truck and get back to business - deeply obliged .
@@Jafromobile I'm doing this right now with a volvo c30 I bought. Engine work is the one thing I haven't done on a car yet and your videos have helped immensely.
This is one of the best how-to videos I have seen. It's in focus and you can see the important parts perfectly, fast forward was great, thoughtful and useful commentary, awesome tips based on real experience. Thanks for a great lesson and not wasting my time! Excellent tutorial!!!!
@@Jafromobile You are such an inspiration. Even though my goals live primarily with math and engineering, informative outlets such as the one you provide within your channel are a reason why automotive will always remain a side passion of mine.
There are people with knowledge and experience, but produce lousy, unedited videos. There are those without knowledge or experience that produce nice looking, edited videos. Both are not worth watching, in most instances, and can sometimes lead people astray. You, on the other hand, have knowledge and experience and produce quality, edited videos that are worth watching. Well done! I hope others are inspired by you to do better.
I'm about to make my first lapping attempt, and was considering the drill method. You convinced me to start by hand and get a 'feel' for it. Thanks for the great info!
Just remember that lapping is not a fix for a bad seat. It's just a test to see if you have a good seat. The less time you spend lapping to make that determination, the better. :) Read other comments here about that before you start. Unless what you're working on is built before World War II, lapping is a test, and only a test. If you have a bad seat, visit my radius cut valve job video! ;)
This video is a life saver! This is the most informative straight-to-the-point video about valve lapping. I just went from apprehensive to confident in 15 minutes. I knew the basic procedure for lapping valves, but had never done it myself. He shows you all the tips and tricks that I never would have figured out. He also makes it clear what you need to watch out for, and how to tell when the valve is correctly seated. No doubt, I would have messed something up on my own engine If I hadn't watched this video. Thanks!
Done this a couple of years back on a spare 4 cylinder head i had after watching this vid. All in all it took me around 6-8 hours, took my time, no rush, had the little pots of course and fine compound you mentioned. Head went on my car and is still on there now and holding up fine.
Haha, that E-type was at brands hatch race circuit a few years back. Gotta love them cars, there was a white V12 one racing around the track also, the noise it made going down the main straight was probably one of the best engine sounds i have every heard.
Hands down one of the best How to video on the internet. Great quality video, perfect audio, clear and to the point, fast forwarding!, everything. Keep up the awesome work.
I watch these automotive videos all the time, but this is the first time I’ve taken the time to comment on one. This is hands down the best how-to instructional video I’ve seen. Well done!
Oh man... this is not the one. Lapping is an inspection process. The best one is the actual valve job which is linked in the description. Keith killed it. This is just part 1. :)
this is easily one of the best automotive instructional videos I have ever seen. informative, no skips getting people of less experience lost just speed up and quality information
I've done some car work but, new to fixing engines. Recently replaced the balance shaft on my ML 350 and before final assembly ran a compression check and found one cylinder leaking. Doesn't seem to be the rings. Started looking into the valves. Been talking to my father-in-law (old-school mechanic). He suggested this technique and i'm glad i ran into your video. Thanks man.
Ken Forbes Great instructions I suggest making.lead pencil marks all around valve seat inserting valve into stem then turn seated valve half a turn .If all pencil marks get rubbed off you are done.If some pencil marks remain keep on lapping
Your vids have rebuilt my Talon 2 times, diagnosed countless issues & tricks, several clutches & are going to get me through a 6-bolt swap into my 2g starting tomorrow. Thanks so much for all your help - hit me up next time you're in Monterey & I'll buy you some doughnuts
I haven’t done a valve job for about 25 years and about to do it for a diesel motor I’m rebuilding, I found this video awesome to brush up on a few skills and ideas that I haven’t used for so long, thanks man 👍
Well well well,it's time to turn old into gold. As I always say old is gold.Technicians nowadays are very advance and knowledgeable about health hazard risk ,health and safety and new technologies. Well done you make your master proud.
Excellent video, very precise, and thorough; which with this type of work is very important. The sound of a proper seated valve is not something you'll learn in a book, and having paid particular attention to that was fundamental at the least. Thank you.
@@Xsidon Vacuum testing for one. In valve seat machining, this is absolutely critical. Lapping the seats is generally the last chance approach. Working the seats as shown here is the approach of do it yourselfer. Not to say it doesn't work and not to take anything away from the video. However, having a machine shop machine a 3 angle valve job (after guide replacement if necessary) along with a vacuum test is the best way and well worth the money.
I love time lapse photography. You are an excellent orator. I could watch this until I get sick of it. It would probably take 2 months, but I do have to go to work.
been wrenching for over 35. years love your in put and explanation you cover every thing in good details . hope some peaple dont over doing it . peace out GOOD JOB
thanks for taking the time to post this, like most males, I cant read a manual and "get" it, but after watching this I think I can handle a basic valve job!
Wow...what a fine piece of instructional video. I have never done a valve job, but was thinking of doing one on my 2000 GMC Sierra 5.3l v8 with 301,000 miles and wanted to know a little bit about what was absolutely necessary and "my opinion" stuff. I've got to say, you have mastered the ART of merging technical instructions with proficiency in delivery to the common man! I have no doubt now that I could spend a weekend performing a well done valve job and know that putting it into service will not leave me guessing if it will work! Very well done video Jaffromobile...kudos to you on job well done.
This was a great video! Love the way you described everything in detail and why you did it the way you did. I've got a Jeep with 250,000 miles and a head jobs almost $300 here in Vegas. I'd rather do it myself now that I know how to. Thanks again
If the valve is burnt, you may want to consider having a professional take a look at it or do the service. More problems could exist than the human eye is able to interpret.
Amazing. I appreciate the straight forward lesson, and not trying to drag out the video for watch time. This was an absolute amazing and VERY easy video to follow as you state every little thing and no bs in between. Thank you my Head looks amazing and I’m confident about it.
I've been doing this almost 40 years lol to Woody. Actually, here's a tip. If you have a perfect seal and clean faces., if you drop the valve in, it will pop back up like it's spring loaded. Nice job
This is absolutely Awesome. I am applying this technique this weekend . I am so excited to be able to do this. Bad Ass. One of the best tutorials ever!
I have fond memories of my dad cutting in vales during a R&R on his spitfire race car. It's almost a lost art. Thanks for sharing. (I also miss "rebuilding" a battery with a hydrometer, and some distilled water and acid)
The only thing it tells me when the sound is smoothing out is that it's time again to put on some extra of that expensive lapping compound. Because the rest is forced out AGAIN.
Lapping compound you were trying to remember is a company called clover. Comes in two little green cans with pop tops. Fine and course. Great stuff! Extremely good videos!!
I love this video! It's one of the best I have ever seen, not long winded with idle meaningless talk just straight to the point. Wish there were more like it!
this is best way of valve lapping .I paid a lot of money for market valve lapping but they failed to do properly .In the last i did it myself and i am full satisfied ❤
Love this video. This type of knowledge is dying. I was fortunate and inherited a crank style valve lapping tool. Works similar with the suction cup (and it's suction problems) but instead of rolling it in your hands you hold the top as straight as you possibly can minimizing the occurrence of the suction cup popping off and crank a handle on the side the and the tool then rotates the valve approximately 30° clockwise then approx 20° counter-clockwise. Making sure the valve is rotated for you. It works great. Lifting the valve off it's seat every few moments is still a great idea for multiple reasons like checking the consistency of the lapping compound even if you can hear it. Also it helps the compound stay on the seat area instead of getting squeezed out. Biggest key to this type of job is being able to listen to it. (VERY APPRECIATED VIDEO) THANK YOU. Here is a link to the type of tool i am talking about. Pretty sure they don't make them anymore. goodson.com/collections/valve-lapping/products/vl-eb-mechanical-valve-lapping-tool
Fantastic video. I actually came on to find a video of the drill method I'd seen before, but after watching this im going to use this method. It'll be my first go with valve work. Love the way you filmed it too, I never once had to fast forward over garbage added while trying to be funny (as so many people put in videos now). This video is just the facts, I appreciate that.
Dude, I've been watching your vids for about a year now-- You're a pretty sharp feller when it comes to engines and getting more "performance" (efficiency) out of them. I've seen you do some things, and have some very effective ideas, that NO ONE else I've seen do. At least not yet. I've learned alot from watching and understanding your Videos-- Most of the time, as soon as the video is over, I wanna run out to my car and tear apart my engine. I SHOULD'VE sub'd a long time ago. My bad. From a very appreciative fan: Keep up the FANTASTIC videos and subject matter.
One short comment, using a drill connected to the valve stem is a bad idea as you state, I use a two inch piece of rubber hose connected to a wooden dowel which goes into the drill and the other end slips over the valve. It does a great job and it's fast.
Good job. Enjoyed your video. Good technique. I'm a seasoned mechanic and engineer and I learned a few new tricks watching your video, loved it, thanks!
I have very little experience with engine work; I'm a total novice. But since my Benz M103 straight six will eventually need a valve job, I wanted to know what goes into the job. I happenstanced upon your video and was kinda mesmerized watching it. Thanks for taking the time to make it; I learned a few things about what to ask the machinist who would do the work Now if only I could find a local shop that would refurbish my head in the way you've done it!
Really good video! Loved the explanations behind why you did things a certain way. Also, great demonstration with allowing the viewers to hear the sound and valve noise change. I don't think it could have been any better.
Very good video of how to. Doing this now on my daughters cavalier. Wish me luck. BTW one of the BEST videos I have seen on any how to operation.Very well done and from experience it shows. 10 Stars Bud.
+John Gomez It's these kinds of details that take 2 months to produce into these videos. I want you guys to leave with something you can use. Thank you!
I did my very first valve job that way. Learned how from a friends dad. The next time I discovered carbide cutters. They clean up the seats faster than lapping. Also with the correct angled carbide cutters, 30, 45, 60, the seats in the head can be narrowed so that they put the correct amount of pressure against the valve. The amount of cutting they do is dependent on the pressure applied. Wide seats reduce the pressure that the valve spring can put on the valve and will make the seats and valve face go bad much faster.
This is THE MUST comprehensive and instructive video I've seen because one can understand the reason for the method used based on the function and mechanics of each part with which you are working on. the best results are obtained through craft work.
Don't understand why there is 413 dislikes to this video. Jafromobile told us how it should be done. Great teaching Jafromobile. very informative. Awesome.....
because what he did isn't what is recommended. This is a very old school way of doing valves and would work great on older engines up until the early 2000's. Newer heads and valves require better numbers than hand-lapping valves. You need a machine to precision cut and face them. You can argue that the valve lapping method will work just fine, but it actually just doesn't in modern engines. It creates a multitude of problems that may not be noticeable at first, but down the road may lead to engine failure and component breakdown. Again, anything newer than 2000 I wouldn't risk lapping. I'm a machinist/mechanic.
Good video Bro. Learned a lot today. It's guys like you that make it possible for novices like myself to learn. Never mind the negative comments from assholes. Keep doing the good work you doing man. God bless you
SPECIAL TIP, here, dude. I remembered that I had some spirit gum that I had bought from Bargain Bins for about a quarter or 50¢. I put some on the suction cup and squished it against the valve which I had sanded. Then I removed it to let it dry some. It works amazingly well. The only thing is, I think I should have degreased the valve and cup first will anhydrous isopropyl alcohol or carburetor spray. It might have worked even better. The spirit gum is a "professional adhesive for applying prosthetics, bald caps, wigs, and crepe hair". It is a product of Mehron, Inc. in Chestnut Ridge, NY. It comes with a bottle of remover, but I might just leave it on and let it burn off. It DEFINITELY HELPS.
Thank you so much. You know I went to college to become a mechanic and to be honest it doesn't really teach you much. This is the kind of stuff I never would have learned without you.
Cool video and very informative! I just ordered a new exhaust valve for 97 Accord F22b2 cylinder head and a re-ring kit. I bought the long block used for $80. The head was previously worked and reconditioned, did noticed oil residue inside the exhaust manifold. What they failed to do previously, was to install new piston rings. #2 had an extreme blow by causing excessive oil to seep into the combustion chamber and burning the exhaust valve.
El Gato Gordo did you check you valve oil seals ? Got similar problem with my Toyota Corolla valve oil seal wear out and oil into the chamber smoke and oil consumption was high but the real problem is the valve guide to much play that wear out the oil seal
@@joecostu1571 Yes, replaced the valve oil seal. The cylinder head was reconditioned recently, so it had new valve guides and seals. Only one exhaust valve was burnt due to piston blow by. Car is running great and recently pass the SoCal dreadful emmission test 👍
I never watch them in order, but I may have watched each of this series of videos 4 times. It took that much to really absorb the material. I'm hungry to port and polish an engine, but have a lot of much more basic mechanical work to do before I can. Thanks for feeding my knowledge Jafro. Also, I have watched dozens of Headbytes videos since my last viewing of this. Are you familiar with his work? It has helped me slowly gain an understanding of what my favorite engine needs. The 1ZZFE that is employed in my Chevy Prizm, but also Toyota Corolla of course, the Pontiac Vibe and the Toyota Matrix. My goals are MPG all day long and won't be taking my build to maximum power, but maybe on a different car I'd go in a similar direction to your work one day. :)
Awesome job on this tutorial. I am about to get into a project on a Ford 5.4 and I have paid $500. in the past to have little more than clean up and lapping done. I've been leery in the past about the effectiveness of lapping as opposed to machine done work, but you have made a believer out of me. Thanks
Bob Sersen Lapping doesn't fix a bad seat! All it does is tell you if you have a bad seat. It helps you see imperfections in the sealing surface. The more you lap, the wider the contact area becomes, the larger that contact area becomes, the less the valves seal because the spring load is spread over a larger area. Use it to mark where your parts seal, and if it's not even or damaged, it needs a proper valve job to fix it. Here's the good news. If you've done all that, the cost of the work is far less when you carry the head to the machine shop yourself. If you had to pay a machinist, you'll pay 10x as much just to get the mechanic to pull the heads and put them back on… than for the machine work to fix the valves. 85% of the job is taking the heads off and putting them back on. 5% is breaking down the heads. 10% is expertise of diagnosing and/or machining the valve seats. The machinist will insist he's more important than that. Remind him that percentage has nothing to do with importance if his feelings get hurt.
This is probably the best DIY-video I have ever seen. :) Very good, and edited/prepared/commented in a way that is fluent and non-hesited! Watch and learn in how to do a video and how to do a proper job on your head! :)
would just like to say your videos are some of the best informative videos I've seen. I'm a auto body man/painter. but love all car related work, don't have anyone do work on my cars but me, paint ,body,suspension,brake,stereo,wiring,ect. your videos are making me beable to do my own head work except machining of course. thanks for the detailed easy to learn and watch videos.
Nice to see someone doing it properly. Well tried and tested... I am old school, seems everyone tries to avoid any hard labour these days... Great Video I passed it to my son who is rebuilding his R32 24V....
This is a valve lap. A valve job requires grinding the valve, and seat with a one degree difference. 45 valve, 44 seat. it promotes a better seat, and breaks in the valve properly over time. Hence it lasts longer. A lap just sands them down to the same angles, and makes a wide seat area, instead of a fine line at the upper portion of the valve face. I'm not saying that what you are doing doesn't work. It is just wrong to call it a valve job, and doubly wrong to sell it as one.
The title of the video is "basics". It's showing the same technique used to verify whether or not a seat is good. In this video, guess what?... the seats are good. In the description is a link to a valve job being performed. There's a section in there about grinding valves. That's basically the valve job "advanced" video. I mislead absolutely nobody. I'm not disagreeing with you, anyone who finds a bad seat is naturally going to realize this doesn't fix it and they need to take it further. This is the basics. Hence, the title.
He is completely right about lapping a valve with a drill, i've seen bent valve stems from people doing it like they were drilling a wall and moving around with the drill
I like that I could hear the difference. I appreciate this very much. I tried lapping valves over 40 years ago unsuccessfully. I will be doing a Yamaha xs400 soon.😊
***** I can appreciate that. Really they're not, and it passed a vacuum test at the machine shop afterwards, but I wasn't happy with them either. So... this exact same head is in my video "Cylinder head 201" getting a fresh radius-cut valve job on 1mm OS valves. ...and yes, they're oversized because my cams and rev limit are changing. I think there's an annotation leading to it somewhere in this video.
Vacuum test only tests the seal. Wide seat reduce the ability of the seat to seal against carbon build up on the seat and wide seats reduce total flow.
***** I don't see anywhere where we disagree except that I have the factory service manual and verified the my seat width was in spec. Sure it was near the end of spec, but It would have gone at least 30,000 more the way I was using it even with the dual valve springs and aftermarket cams. This head only had 48,000 miles on it. But, yes, we both agree. It was near the end of spec, and I wasn't happy with it. Some people have a problem with the title of this video, and there's absolutely nothing I can do to help them. I'm not changing it. This is a 100-series topic. Lapping, disassembly, and assembly... are things a home mechanic can do with the right set of tools. Seat cutting and valve grinding is typically not. That's why the 200 series valve job video is shot in a machine shop and handled as a separate topic. It's linked from inside this video [if your annotations are turned on] at 13:35. During #201, the machinist does the exact same procedure in this video. He lapped in 4 valves this exact same way. 2 of them to set the guides on the machine, and 2 more half-way through the job to ensure the guides didn't move and to check his work. So, lapping valves is by all means a basic valve job procedure. There are a lot of R&R procedures, and that's why my cylinder head series has so many videos. When I get a bad example to demonstrate, I'll show it. I just haven't yet.
Factory spec has nothing to do with performance. Do any race teams use a factory spec manual...no. It's all about the R&D on the flow bench and dyno. I spent from 1994-2007 doing just that using port flow analyzer 3.0,super flow 600 and a depac dyno and cutting tons of experimental valve jobs on dozens of cylinderheads. You really want to get into black magic...valve springs and cam specs.
Performance is why I had new seats cut to a specific depth on a radius cutter and replaced all the valves. I'm sure by black magic you're referring to the valve spring and camshafts' affect on seat pressure and by cams you're referring to airflow and valve timing. I've got videos on those topics, too. Those are also fairly basic, but they're enough to help someone new to the process understand how to dial in their DOHC cams correctly where they should be. Us turbo guys also have to consider boost pressure with our seat pressures in addition to cam and spring selections, so it's like black magic with chocolate sprinkles. And of course, "sprinkles are only for winners." :P EDIT: The valve springs, valve timing & lobe separation angle, and valve clearance videos videos were Cylinder Head #203, 205 and 206. The Hyundai Assembly 5 video was the punishment of getting #206 right with freshly-machined junk parts. Different head, but same cams and springs that were previously in the head that was in this video.
This is bad… why did I order Gum Cutter and some suction cup on a stick thing after watching this video? I work on computers. Very nice video! Appreciate sharing your knowledge on this.
Ive done lapping with power drill. Most of the problems you listed can be eliminated by using rubber hose between the drill and valve stem. But i still agree, you will get beeter results by doing it this way.
10 years later and still one of the best tutorials on RUclips for doing such an important task
I’ve been doing this for 40 years, you nailed it kid.
Have you worked on a Honda S600 engine?
ART
opp0ooopo9o0000
o
œ
One of the best automotive videos I've watched! Your expierience and knowledge is obvious but you also have a gift for teaching.
I was ASE cert with 25 years expierience. I owned an auto and truck repair shop and employed 15 full time techs.
My shop was 25k square feet and had a machine shop and a partitioned body shop. I owned a separate Corp that was a H D and light duty towing Co.
Also had Volvo, White, GMC dealer affiliation authorization.
I started in a 2 car garge at my childhood home.
I lost it to leukemia but only mention it, 1) because it was a source of pride and 2) because you mentioned health risks when using chemicals. I was proud of you for that. For all those that don't take it serious, my leukemia was likley caused by siphoning gas as a kid when I worked for a bus co. On several occasions I swallowed a bit. I have been suffering the effects for 35 years of which the last 12 included bone marrow cancer. My leukemia was a precursor to BMC so I knew that day was coming. If your reading this, DONT DO IT! BTW your video brought back memories, good ones. I too was a perfectionist, (Of coarse didn't always succeed). I used the exact method you did and was taught by a master machinist.
Thanks
Nice heart-felt comment.
Joe Mikos Hope you get better.
Joe Mikos i cover myself in this crap all day working in cars i know the damage i know the danger but never think about it like most things in my life. i hope you get well and recover.
Joe Mikos i cover myself in this crap all day working in cars i know the damage i know the danger but never think about it like most things in my life. i hope you get well and recover.
Joe Mikos YOU was SAE and YOU learned from THAT? Guides need replacing using special tools. Seats require special tools. If he wants to pull the head back off at HIS expense, that's him!
Thank you so much for this video . With limited mechanical experience I was able to rebuild the head on my food truck and get back to business - deeply obliged .
This comment means more to me than most. Thank you for all of your hard work! And I mean that!
@@Jafromobile I'm doing this right now with a volvo c30 I bought. Engine work is the one thing I haven't done on a car yet and your videos have helped immensely.
This is one of the best how-to videos I have seen. It's in focus and you can see the important parts perfectly, fast forward was great, thoughtful and useful commentary, awesome tips based on real experience. Thanks for a great lesson and not wasting my time! Excellent tutorial!!!!
Nick Kaplan Thank you Nick! It's comments like this that remind me all the time and effort put into their production is worth it. :)
nike
Plus you can very clearly hear the sound and he stops talking for a bit just so you can hear
@@Jafromobile You are such an inspiration. Even though my goals live primarily with math and engineering, informative outlets such as the one you provide within your channel are a reason why automotive will always remain a side passion of mine.
There are people with knowledge and experience, but produce lousy, unedited videos. There are those without knowledge or experience that produce nice looking, edited videos. Both are not worth watching, in most instances, and can sometimes lead people astray. You, on the other hand, have knowledge and experience and produce quality, edited videos that are worth watching. Well done! I hope others are inspired by you to do better.
You just inspired me to change the description and make it better. I forgot to link the machine shop version of a valve job in it.
regardless which option it is, cant beat free (knowledge, entertainment)
*Don't look at a gift horse in the mouth
I'm about to make my first lapping attempt, and was considering the drill method. You convinced me to start by hand and get a 'feel' for it. Thanks for the great info!
Just remember that lapping is not a fix for a bad seat. It's just a test to see if you have a good seat. The less time you spend lapping to make that determination, the better. :) Read other comments here about that before you start. Unless what you're working on is built before World War II, lapping is a test, and only a test. If you have a bad seat, visit my radius cut valve job video! ;)
I used the drill for my first time because I didn’t have a lapping handle and it worked great
This video is a life saver! This is the most informative straight-to-the-point video about valve lapping. I just went from apprehensive to confident in 15 minutes. I knew the basic procedure for lapping valves, but had never done it myself. He shows you all the tips and tricks that I never would have figured out. He also makes it clear what you need to watch out for, and how to tell when the valve is correctly seated. No doubt, I would have messed something up on my own engine If I hadn't watched this video. Thanks!
Yes Sir, he's a soft spoken guy.
Done this a couple of years back on a spare 4 cylinder head i had after watching this vid. All in all it took me around 6-8 hours, took my time, no rush, had the little pots of course and fine compound you mentioned. Head went on my car and is still on there now and holding up fine.
Thank you for the feedback! That's a beautiful e-type in your profile photo, Bob! BTW... are you my uncle?
Haha, that E-type was at brands hatch race circuit a few years back. Gotta love them cars, there was a white V12 one racing around the track also, the noise it made going down the main straight was probably one of the best engine sounds i have every heard.
What the name of the compound ?
compound w
@@xrpprx9831 valve grinding. Compound
I thought this job was above my skill level. Like anything I've ever encountered, it's all about knowing the procedure. Thank you very much!
I FEEL YA THERE
Hands down one of the best How to video on the internet. Great quality video, perfect audio, clear and to the point, fast forwarding!, everything. Keep up the awesome work.
9 years later, still a very high quality video! Thanks!!
Thanks man done this on my yz 450 5 valve head it had 3 leaking valves and now every one of them is fixed thanks!!!
I watch these automotive videos all the time, but this is the first time I’ve taken the time to comment on one. This is hands down the best how-to instructional video I’ve seen. Well done!
Oh man... this is not the one. Lapping is an inspection process. The best one is the actual valve job which is linked in the description. Keith killed it. This is just part 1. :)
this is easily one of the best automotive instructional videos I have ever seen. informative, no skips getting people of less experience lost just speed up and quality information
I've done some car work but, new to fixing engines. Recently replaced the balance shaft on my ML 350 and before final assembly ran a compression check and found one cylinder leaking. Doesn't seem to be the rings. Started looking into the valves.
Been talking to my father-in-law (old-school mechanic). He suggested this technique and i'm glad i ran into your video. Thanks man.
Ken Forbes
Great instructions I suggest making.lead pencil marks all around valve seat inserting valve into stem then turn seated valve half a turn .If all pencil marks get rubbed off you are done.If some pencil marks remain keep on lapping
Just blew my mind some people are made for this youtube stuff where clear didn't over complicate it . Can't thank you enough
This guy is top shelf. Everything he says is 100% accurate information.
Great video
Your vids have rebuilt my Talon 2 times, diagnosed countless issues & tricks, several clutches & are going to get me through a 6-bolt swap into my 2g starting tomorrow. Thanks so much for all your help - hit me up next time you're in Monterey & I'll buy you some doughnuts
I haven’t done a valve job for about 25 years and about to do it for a diesel motor I’m rebuilding, I found this video awesome to brush up on a few skills and ideas that I haven’t used for so long, thanks man 👍
Well well well,it's time to turn old into gold. As I always say old is gold.Technicians nowadays are very advance and knowledgeable about health hazard risk ,health and safety and new technologies. Well done you make your master proud.
Excellent video, very precise, and thorough; which with this type of work is very important. The sound of a proper seated valve is not something you'll learn in a book, and having paid particular attention to that was fundamental at the least.
Thank you.
I don't even have a driver's license but stayed for the insightful commentary. Thank you for all the efforts!
i like this guy. He does everything right...has a good head on his shoulders.
tocay
Actually he doesn't he missed major steps
kevykev38 Such as?
@@kevykev38 splain
@@Xsidon Vacuum testing for one. In valve seat machining, this is absolutely critical. Lapping the seats is generally the last chance approach. Working the seats as shown here is the approach of do it yourselfer. Not to say it doesn't work and not to take anything away from the video. However, having a machine shop machine a 3 angle valve job (after guide replacement if necessary) along with a vacuum test is the best way and well worth the money.
brother u are a monster... rebuilding a subaru on a minimum budget has me trolling all of your how to's... simply one of the best
I love time lapse photography. You are an excellent orator. I could watch this until I get sick of it. It would probably take 2 months, but I do have to go to work.
been wrenching for over 35. years love your in put and explanation you cover every thing in good details . hope some peaple dont over doing it . peace out GOOD JOB
thanks for taking the time to post this, like most males, I cant read a manual and "get" it, but after watching this I think I can handle a basic valve job!
Wow...what a fine piece of instructional video. I have never done a valve job, but was thinking of doing one on my 2000 GMC Sierra 5.3l v8 with 301,000 miles and wanted to know a little bit about what was absolutely necessary and "my opinion" stuff. I've got to say, you have mastered the ART of merging technical instructions with proficiency in delivery to the common man! I have no doubt now that I could spend a weekend performing a well done valve job and know that putting it into service will not leave me guessing if it will work! Very well done video Jaffromobile...kudos to you on job well done.
This was a great video! Love the way you described everything in detail and why you did it the way you did. I've got a Jeep with 250,000 miles and a head jobs almost $300 here in Vegas. I'd rather do it myself now that I know how to. Thanks again
just got the head off & starting my first valve job (burnt exhaust valve). the years of experience you are sharing are priceless. thank you
If the valve is burnt, you may want to consider having a professional take a look at it or do the service. More problems could exist than the human eye is able to interpret.
Amazing. I appreciate the straight forward lesson, and not trying to drag out the video for watch time. This was an absolute amazing and VERY easy video to follow as you state every little thing and no bs in between. Thank you my Head looks amazing and I’m confident about it.
I've been doing this almost 40 years lol to Woody. Actually, here's a tip. If you have a perfect seal and clean faces., if you drop the valve in, it will pop back up like it's spring loaded. Nice job
This is absolutely Awesome. I am applying this technique this weekend . I am so excited to be able to do this. Bad Ass. One of the best tutorials ever!
I don’t know why but I keep coming back to old Jafro videos. Meditative for me somehow.
I have fond memories of my dad cutting in vales during a R&R on his spitfire race car. It's almost a lost art. Thanks for sharing. (I also miss "rebuilding" a battery with a hydrometer, and some distilled water and acid)
A really good video. What I like best is this dudes voice and narration style, it feels like I’m listening to Bruce Brown narrating “Endless Summer”.
i like the sound of the valve seat smoothing out :)
The only thing it tells me when the sound is smoothing out is that it's time again to put on some extra of that expensive lapping compound. Because the rest is forced out AGAIN.
Your experience let alone putting it into words the commoners can understand is priceless and for that I thank you
Lapping compound you were trying to remember is a company called clover. Comes in two little green cans with pop tops. Fine and course. Great stuff! Extremely good videos!!
I am rebuilding a LS 5.3, but I'm using your methods. Thanks for taking the time to make these videos.
I really really enjoy how you put together your videos. Fast paced but you cover all the point through narrating. Great work!
(•_•)
( •_•)>⌐■-■
(⌐■_■) - I see you chose the red pill.
I'm doing the head of a 1999 Honda Civic EX and this video series is still perfect. Good video, audio, editing, flow, and advice!
I actually learned these techniques on a '92 Honda Civic DX head.
I love this video! It's one of the best I have ever seen, not long winded with idle meaningless talk just straight to the point. Wish there were more like it!
this is best way of valve lapping .I paid a lot of money for market valve lapping but they failed to do properly .In the last i did it myself and i am full satisfied ❤
You are a master. This video was really therapeutic to watch, it was so well done. Thank you.
Awesome,really it is perfect gud method I just need a bit of patience bit results really worth it.keep de gud word peace
Love this video. This type of knowledge is dying. I was fortunate and inherited a crank style valve lapping tool. Works similar with the suction cup (and it's suction problems) but instead of rolling it in your hands you hold the top as straight as you possibly can minimizing the occurrence of the suction cup popping off and crank a handle on the side the and the tool then rotates the valve approximately 30° clockwise then approx 20° counter-clockwise. Making sure the valve is rotated for you. It works great. Lifting the valve off it's seat every few moments is still a great idea for multiple reasons like checking the consistency of the lapping compound even if you can hear it. Also it helps the compound stay on the seat area instead of getting squeezed out. Biggest key to this type of job is being able to listen to it. (VERY APPRECIATED VIDEO) THANK YOU.
Here is a link to the type of tool i am talking about. Pretty sure they don't make them anymore. goodson.com/collections/valve-lapping/products/vl-eb-mechanical-valve-lapping-tool
I added this video to my favorites and hit the like button. It's so good that I shared this video on Facebook as well!
Fantastic video. I actually came on to find a video of the drill method I'd seen before, but after watching this im going to use this method. It'll be my first go with valve work. Love the way you filmed it too, I never once had to fast forward over garbage added while trying to be funny (as so many people put in videos now). This video is just the facts, I appreciate that.
Just like watching an artist paint... Amazing work, very instructive, straight into the subject.Thanks
Dude, I've been watching your vids for about a year now-- You're a pretty sharp feller when it comes to engines and getting more "performance" (efficiency) out of them. I've seen you do some things, and have some very effective ideas, that NO ONE else I've seen do. At least not yet.
I've learned alot from watching and understanding your Videos-- Most of the time, as soon as the video is over, I wanna run out to my car and tear apart my engine.
I SHOULD'VE sub'd a long time ago. My bad.
From a very appreciative fan: Keep up the FANTASTIC videos and subject matter.
One short comment, using a drill connected to the valve stem is a bad idea as you state, I use a two inch piece of rubber hose connected to a wooden dowel which goes into the drill and the other end slips over the valve. It does a great job and it's fast.
Dude you have a gift.. We greatly appreciate all that you have done for us. As iron sharpens iron. So one person sharpens another..
Good job. Enjoyed your video. Good technique. I'm a seasoned mechanic and engineer and I learned a few new tricks watching your video, loved it, thanks!
I have very little experience with engine work; I'm a total novice. But since my Benz M103 straight six will eventually need a valve job, I wanted to know what goes into the job. I happenstanced upon your video and was kinda mesmerized watching it. Thanks for taking the time to make it; I learned a few things about what to ask the machinist who would do the work Now if only I could find a local shop that would refurbish my head in the way you've done it!
Really good video! Loved the explanations behind why you did things a certain way. Also, great demonstration with allowing the viewers to hear the sound and valve noise change. I don't think it could have been any better.
سنترااسمند
سنترالسمند
Most detail oriented video clip and clips I've seen hands down I was not afraid to do this job on my h23a1 thanks for the awesome booster confidence
Great video - informative, well edited and enjoyable! Couldn't agree more about not using a drill, far better results when you put the effort in :)
Very good video of how to. Doing this now on my daughters cavalier. Wish me luck. BTW one of the BEST videos I have seen on any how to operation.Very well done and from experience it shows. 10 Stars Bud.
Amazing video!!! i love that you let us hear the pitch change! what a valuable recourse
+John Gomez It's these kinds of details that take 2 months to produce into these videos. I want you guys to leave with something you can use. Thank you!
I did my very first valve job that way. Learned how from a friends dad. The next time I discovered carbide cutters. They clean up the seats faster than lapping. Also with the correct angled carbide cutters, 30, 45, 60, the seats in the head can be narrowed so that they put the correct amount of pressure against the valve. The amount of cutting they do is dependent on the pressure applied. Wide seats reduce the pressure that the valve spring can put on the valve and will make the seats and valve face go bad much faster.
you can try soda blasting it is cheaper and no chemicals to breath in and will not hurt seats and valves
I like the way you put out your directions. That's the way I've been doing it for years. Use your hands and listen for the sound.
Additional bonus to using a pizza box is that first you get to eat delicious pizza.
This is THE MUST comprehensive and instructive video I've seen because one can understand the reason for the method used based on the function and mechanics of each part with which you are working on. the best results are obtained through craft work.
Love the video. Informative without being full of inane 'chat', and the use of FF is great. Thumbs up and favorited.
Don't understand why there is 413 dislikes to this video. Jafromobile told us how it should be done. Great teaching Jafromobile. very informative. Awesome.....
because what he did isn't what is recommended. This is a very old school way of doing valves and would work great on older engines up until the early 2000's. Newer heads and valves require better numbers than hand-lapping valves. You need a machine to precision cut and face them. You can argue that the valve lapping method will work just fine, but it actually just doesn't in modern engines. It creates a multitude of problems that may not be noticeable at first, but down the road may lead to engine failure and component breakdown. Again, anything newer than 2000 I wouldn't risk lapping. I'm a machinist/mechanic.
WOW what an awesome video. Thanks for TEACHING me something.
your talking in the video is not annoying its teaching and its proper and its knowledge dropping so haters gotta go somewhere else
Great, professional video! Thank you so much for this upload! Really learned and Enjoyed!
I subscribed immediately after my first Jafro vid. You won't find this kind of help in a paid course.
Good video Bro. Learned a lot today. It's guys like you that make it possible for novices like myself to learn. Never mind the negative comments from
assholes. Keep doing the good work you doing man. God bless you
bklynboyeny haters gonna hate! i hope they hear my valves movin all nice and clean when i pass em at the bus stop lol
SPECIAL TIP, here, dude. I remembered that I had some spirit gum that I had bought from Bargain Bins for about a quarter or 50¢. I put some on the suction cup and squished it against the valve which I had sanded. Then I removed it to let it dry some. It works amazingly well. The only thing is, I think I should have degreased the valve and cup first will anhydrous isopropyl alcohol or carburetor spray. It might have worked even better.
The spirit gum is a "professional adhesive for applying prosthetics, bald caps, wigs, and crepe hair". It is a product of Mehron, Inc. in Chestnut Ridge, NY. It comes with a bottle of remover, but I might just leave it on and let it burn off. It DEFINITELY HELPS.
I enjoy watching ur videos you do an awesome job keep up the good work
Thank you so much. You know I went to college to become a mechanic and to be honest it doesn't really teach you much. This is the kind of stuff I never would have learned without you.
AWSOME FREEKN' video!!!!! Great job, im going to put this to work on my Sea Doo head!
Cool video and very informative! I just ordered a new exhaust valve for 97 Accord F22b2 cylinder head and a re-ring kit. I bought the long block used for $80. The head was previously worked and reconditioned, did noticed oil residue inside the exhaust manifold. What they failed to do previously, was to install new piston rings. #2 had an extreme blow by causing excessive oil to seep into the combustion chamber and burning the exhaust valve.
El Gato Gordo did you check you valve oil seals ? Got similar problem with my Toyota Corolla valve oil seal wear out and oil into the chamber smoke and oil consumption was high but the real problem is the valve guide to much play that wear out the oil seal
@@joecostu1571 Yes, replaced the valve oil seal. The cylinder head was reconditioned recently, so it had new valve guides and seals. Only one exhaust valve was burnt due to piston blow by. Car is running great and recently pass the SoCal dreadful emmission test 👍
I never watch them in order, but I may have watched each of this series of videos 4 times. It took that much to really absorb the material. I'm hungry to port and polish an engine, but have a lot of much more basic mechanical work to do before I can.
Thanks for feeding my knowledge Jafro.
Also, I have watched dozens of Headbytes videos since my last viewing of this. Are you familiar with his work? It has helped me slowly gain an understanding of what my favorite engine needs. The 1ZZFE that is employed in my Chevy Prizm, but also Toyota Corolla of course, the Pontiac Vibe and the Toyota Matrix.
My goals are MPG all day long and won't be taking my build to maximum power, but maybe on a different car I'd go in a similar direction to your work one day. :)
Awesome job on this tutorial. I am about to get into a project on a Ford 5.4 and I have paid $500. in the past to have little more than clean up and lapping done. I've been leery in the past about the effectiveness of lapping as opposed to machine done work, but you have made a believer out of me. Thanks
Bob Sersen Lapping doesn't fix a bad seat! All it does is tell you if you have a bad seat. It helps you see imperfections in the sealing surface. The more you lap, the wider the contact area becomes, the larger that contact area becomes, the less the valves seal because the spring load is spread over a larger area. Use it to mark where your parts seal, and if it's not even or damaged, it needs a proper valve job to fix it.
Here's the good news. If you've done all that, the cost of the work is far less when you carry the head to the machine shop yourself. If you had to pay a machinist, you'll pay 10x as much just to get the mechanic to pull the heads and put them back on… than for the machine work to fix the valves. 85% of the job is taking the heads off and putting them back on. 5% is breaking down the heads. 10% is expertise of diagnosing and/or machining the valve seats. The machinist will insist he's more important than that. Remind him that percentage has nothing to do with importance if his feelings get hurt.
This is probably the best DIY-video I have ever seen. :)
Very good, and edited/prepared/commented in a way that is fluent and non-hesited!
Watch and learn in how to do a video and how to do a proper job on your head! :)
would just like to say your videos are some of the best informative videos I've seen. I'm a auto body man/painter. but love all car related work, don't have anyone do work on my cars but me, paint ,body,suspension,brake,stereo,wiring,ect. your videos are making me beable to do my own head work except machining of course. thanks for the detailed easy to learn and watch videos.
a world of correct information right here thank you = did your par teach you or grand par.
Nice to see someone doing it properly. Well tried and tested... I am old school, seems everyone tries to avoid any hard labour these days... Great Video I passed it to my son who is rebuilding his R32 24V....
Holy crap this is one awesome video!
Great job. Well spoken, clear and concise. I'm going to stop what I'm doing just to watch some more of your videos.
I hope you got some sleep!
"Time to order papa johns wife! I've got a valve job to do." Awesome vid man, I came away with new info.
This is the only video that I could find that gave a CLEAR basic idea on how to install valves the right way! Thanks👍
This is a valve lap. A valve job requires grinding the valve, and seat with a one degree difference. 45 valve, 44 seat. it promotes a better seat, and breaks in the valve properly over time. Hence it lasts longer. A lap just sands them down to the same angles, and makes a wide seat area, instead of a fine line at the upper portion of the valve face. I'm not saying that what you are doing doesn't work. It is just wrong to call it a valve job, and doubly wrong to sell it as one.
The title of the video is "basics". It's showing the same technique used to verify whether or not a seat is good. In this video, guess what?... the seats are good. In the description is a link to a valve job being performed. There's a section in there about grinding valves. That's basically the valve job "advanced" video. I mislead absolutely nobody. I'm not disagreeing with you, anyone who finds a bad seat is naturally going to realize this doesn't fix it and they need to take it further. This is the basics. Hence, the title.
4g63?
He is completely right about lapping a valve with a drill, i've seen bent valve stems from people doing it like they were drilling a wall and moving around with the drill
how well did your valves hold up ?
Was that lapping compound (that you forgot the name of) called Clover? That's what I use...It's the best... Keep up the good work!
كوررا 2008
I like that I could hear the difference. I appreciate this very much. I tried lapping valves over 40 years ago unsuccessfully. I will be doing a Yamaha xs400 soon.😊
This isn't a valve job,this is valve lapping. Those seats are way too wide.
***** I can appreciate that. Really they're not, and it passed a vacuum test at the machine shop afterwards, but I wasn't happy with them either. So... this exact same head is in my video "Cylinder head 201" getting a fresh radius-cut valve job on 1mm OS valves. ...and yes, they're oversized because my cams and rev limit are changing. I think there's an annotation leading to it somewhere in this video.
Vacuum test only tests the seal. Wide seat reduce the ability of the seat to seal against carbon build up on the seat and wide seats reduce total flow.
***** I don't see anywhere where we disagree except that I have the factory service manual and verified the my seat width was in spec. Sure it was near the end of spec, but It would have gone at least 30,000 more the way I was using it even with the dual valve springs and aftermarket cams. This head only had 48,000 miles on it. But, yes, we both agree. It was near the end of spec, and I wasn't happy with it.
Some people have a problem with the title of this video, and there's absolutely nothing I can do to help them. I'm not changing it. This is a 100-series topic. Lapping, disassembly, and assembly... are things a home mechanic can do with the right set of tools. Seat cutting and valve grinding is typically not. That's why the 200 series valve job video is shot in a machine shop and handled as a separate topic. It's linked from inside this video [if your annotations are turned on] at 13:35. During #201, the machinist does the exact same procedure in this video. He lapped in 4 valves this exact same way. 2 of them to set the guides on the machine, and 2 more half-way through the job to ensure the guides didn't move and to check his work. So, lapping valves is by all means a basic valve job procedure. There are a lot of R&R procedures, and that's why my cylinder head series has so many videos.
When I get a bad example to demonstrate, I'll show it. I just haven't yet.
Factory spec has nothing to do with performance. Do any race teams use a factory spec manual...no. It's all about the R&D on the flow bench and dyno. I spent from 1994-2007 doing just that using port flow analyzer 3.0,super flow 600 and a depac dyno and cutting tons of experimental valve jobs on dozens of cylinderheads. You really want to get into black magic...valve springs and cam specs.
Performance is why I had new seats cut to a specific depth on a radius cutter and replaced all the valves. I'm sure by black magic you're referring to the valve spring and camshafts' affect on seat pressure and by cams you're referring to airflow and valve timing. I've got videos on those topics, too. Those are also fairly basic, but they're enough to help someone new to the process understand how to dial in their DOHC cams correctly where they should be. Us turbo guys also have to consider boost pressure with our seat pressures in addition to cam and spring selections, so it's like black magic with chocolate sprinkles. And of course, "sprinkles are only for winners." :P
EDIT: The valve springs, valve timing & lobe separation angle, and valve clearance videos videos were Cylinder Head #203, 205 and 206. The Hyundai Assembly 5 video was the punishment of getting #206 right with freshly-machined junk parts. Different head, but same cams and springs that were previously in the head that was in this video.
very nice...my dad taught me this technique more than 35 years ago...ive been performing it ever since.
Thanks for this video, 4 years ago I rebuilt a head on my old car now I have another engine build so this video is so useful
I've got a better one now... check the description! ;)
Anyone else get a bad Santa vibe from the narrative. I love it. Great video, very informative.
Appreciate being able to see what the mechanic is going to do in a valve job.
This is bad… why did I order Gum Cutter and some suction cup on a stick thing after watching this video? I work on computers. Very nice video! Appreciate sharing your knowledge on this.
Ive done lapping with power drill. Most of the problems you listed can be eliminated by using rubber hose between the drill and valve stem. But i still agree, you will get beeter results by doing it this way.