No offense, but if you want to actually learn something, listen to videos and podcasts of actual real engine builders that have a clue. Listening to a magazine tech editor will not do anything but confuse the inexperienced with more inexperience. Kinda like building your engine to a magazine article back in the day. You just don't do it. Talk about misinformation.
@@Linwood_Garage Well, it WAS a free country, but you can still disagree if you prefer. Your knowledge base will only be as good as who you listen to and learn from. He is not an engine builder, and has no real clue how to make power. He is tech editor for Hot Rod magazine. Since the internet is more popular, he is just profiting off youtube as a virtual magazine article, reporting on someone else's experience. But hey, you do what ya gotta do. 🤘
I am just starting to study this porting tech on SBC heads and your vids inspire me to try my hand with some cast iron heads. I find all your vids interesting and useful . Thanks
That porting by hand is pretty wicked., just amazing you are doing it by hand and shape is smooth and consistent. I also knew you would taper the valve guide. I just wanted to see the improvement from stock with taper guides alone on the flow bench.
Hi Eric thanks for posting this. Been watching your vids for awhile now and I have been learning since mostly about valve to throat ratio and coefficient of discharge. Im learning to port not car heads but small motorcycles. Single cylinder hemi heads thats almost the same looking ports like the ones you port. I will wait for your next vid about porting the exhaust before I port mine. Regards from the Philippines!
Some heads come with a ramp in the intake port. The old TBI chevy had them and the LS heads have them. Seems this would direct flow to the center back side of the valve. Do they really promote swirl? Why do some people remove them? Thanks
It's an attempt to introduce swirl entering the chamber and bore. However swirl, a form a turbulence, is not an indicator of power in and of itself. It is removed when you need more area, in which case power is increased for most applications on a running engine, not on a bench.
Eric I have a question I have a set of 351 c 2 v heads Aussie heads my question is the exhaust vale hole has a hole for heat riser is there any to fill that up thanks
Thanks weingartner. I remember a picture of a SBC head you ported in the Engine Master’s. If it truly was the head on the engine your technique has improved considerably. I am getting much older now and my hand isn’t a steady as it once was. But I have comfort in knowing I can still get flow whether they are pretty or not. Haha
Maaan!! I was just thinking if there was a way I could mold shape the inside of the port. Cut away half of the intake and pure a clear epoxy risen around the other half of the mold then you could have a clear view of the head port while flow testing it!!! I think we can do this!!!
For a q&a topic i would like to see a short explanation of your personal experience with those brodix dr wp 1213 sbc heads. Obviously the specs are online but if you've messed with them and your opinions of them.
Alright, so I have a mud bogging truck with a 383, I'm running pro topline heads, I originally ran a dual plane air gap style intake, but it's not doing as I wanted. What's the very best race manifold money can buy for a sbc. I was thinking about buying a Wilson manifold, or should I buy a victor jr and port it myself? Im willing to spend the time necessary to match the ports properly, etc.
Man I have a noob question..lol I cant figure out what I'm doing wrong but how do you keep your bur tool from jumping/skipping around?? I also listen to audio books or Ted talks ect when I'm tig welding ... cant do music because I tend to start dipping to the beat and get shakey lol
I ported two heads, both were twin cylinder motorcycle engines, just to learn. Interestingly, the porting seemed to have no effect below 4k rpm, but above 4k the engine really woke up. By 5k rpm it really came alive, pulled like never before. Plus the engine pulled hard way past redline and just sounded sweet as all get out. But the porting did nothing for power below 4k rpm and on a street engine you spend a lot of time at low rpm. My best guess is the factory had the port shapes good enough for a mild mannered street machine.
can you make something flow really great flow numbers down low and mid lift in the range .050 through .550" lift peak so say everything below that flow really well before peaking at .550-.575" max. Lots of coefficiency , swirl, velocity etc. GEN 1 SBC what heads would you recomend
Also got a question about the video vizard has on the 186 casting head, he puts a 1.94 valve in a 2.02 seat, I myself have ordered a few bare 2.02 heads and I had an old set of 1.94s and dropped it in out of curiosity, even lapped it a bit and it appeared do-able but I didn’t wanna ask and look like an idiot. But after seeing that video, can it be done, I guess it all depends on the seat but it sure would help with unshrouding. Can you elaborate on that?
I've always wondered just why Chevrolet put the 2-3 and 6-7 exhaust ports next to each other? Dodge engines are the same way. You would think that the concentration of heat in the middle of the head would increase the chances of warpage or cracking. Good thing they have 5 bolts per cylinder.
Just started to get more serious about porting and getting more burrs and what not. Now do you polish the intake runners or leave it kinda rougher than the exhaust to help with atomization? What are you using to finish them? I'm mainly doing cathedral port heads, any tips specifically for those style heads? Are you doing any work to the combustion chambers to help with getting exhuast out faster or just better efficiency period?
Hi Eric. Videos are awesome, thanks very much. How exactly does the wing on the port floor help? Have you ever welded that area so the wing could be made bigger? Thx again
Hey Eric what kind of grinders do you use or what would you recommend? Not sure if you’ve shown them before but if you don’t care can you show the grinders and flex shaft up close. I have a dremel and a couple different brand flex shafts but they just seem cheesy. I really wanna thank you for showing this, watching you and Vizard lately has respiked my passion for wanting to conquer this. I really appreciate what your doing.
As I understand for street they are overkill. They say that titanium has the strength of a steel and weight of aluminum. Lighter valves let you rev engine higher without valve float but on street that does not really matter.
Thanks @@v6ileib I guess I should have qualified that a bit more, I am referring to a high lift cam with roller lifters and roller rockers and heavy valve springs, I could see an increase in durability if titanium valves were used with lighter valve springs to take some stress off some of the other components.
@@spannerm8335 ti valves are more for racing engines, You gotta run lash caps and need to install beryllium seats to get decent life out of a ti valve. Pretty overkill and over priced for a motor on the street even if that said motor is modified. You just need stainless valves
@11:00 about cnc machining really old heads, like Ford 289 '66 , I told customer it could be done when each port would be probed and then for each port the program would be adjusted for core shift or cant or whatever. Customer: ??? 😁
Core shift is not a concern at all with todays CNC's. There is something called digitizing or profiling that has been created for CNCs that are made for Cylinder head porting. The digitizing probe can take reference points within the ports giving the data needed to tell the machine exactly where the ports are. Rottler EM69HP, HASS UMC-1000P, or Centroid A560 would all be capable of doing any cylinder head with any variance in port design, core shift, or repair of a damaged head. These machines make quick work turning a hand 40-50 hour job into 2 hour job. If you are not comfortable with only taking a couple of reference points you could always re digitize the entire head which would still be faster than hand porting. Most 2v heads are around 4-5 hours for digitizing and then about 2 hours for porting. If you don't know or don't want to learn G and M programing then buy the Rottler. If you know G and M programing but don't have or want to drop 300k all at once then buy the HAAS they offer great financing options. If you are looking for the cheapest of them all but still requires G and M programing then buy the Centroid. 5-axis CNC can provide an opportunity to revolutionize production times for small business such as yourself. Don't be stuck on old info. The CNC world is only getting better and faster.
The CNC machine cuts the same ports in 3d space. If the material is not in the same location on every head then the machine still cuts from the same 3d space no matter if it's cutting nothing or ..125 deep becouse the materials are not in the same location inside the port. 👍
I have been listening to Richard Holdener live chats while I work. Helps me a lot. 👍🏾👍🏾👍🏾
No offense, but if you want to actually learn something, listen to videos and podcasts of actual real engine builders that have a clue. Listening to a magazine tech editor will not do anything but confuse the inexperienced with more inexperience. Kinda like building your engine to a magazine article back in the day. You just don't do it. Talk about misinformation.
@@jrdmotorsports9718 Let's agree to disagree. You missed the point of my post. Maybe I should have elaborated instead of keeping it short and sweet.
@@Linwood_Garage Well, it WAS a free country, but you can still disagree if you prefer. Your knowledge base will only be as good as who you listen to and learn from. He is not an engine builder, and has no real clue how to make power. He is tech editor for Hot Rod magazine. Since the internet is more popular, he is just profiting off youtube as a virtual magazine article, reporting on someone else's experience. But hey, you do what ya gotta do. 🤘
@@jrdmotorsports9718 Enjoy your day 👍🏾👍🏾👍🏾
@@jrdmotorsports9718 who do you consider worthy of listening to?
I am just starting to study this porting tech on SBC heads and your vids inspire me to try my hand with some cast iron heads. I find all your vids interesting and useful . Thanks
👍 great job with both explaining etc & hands on!
I use Foredoms too! I used to be a jeweler, and I bought 2 of them. They worked out great for porting
The grinder motors??
That porting by hand is pretty wicked., just amazing you are doing it by hand and shape is smooth and consistent. I also knew you would taper the valve guide. I just wanted to see the improvement from stock with taper guides alone on the flow bench.
This is awesome! Thank you for sharing your experience with us!
You are a champion!
As usual another great bit of information. Thanks again
Can’t wait for the Q&A session!!
Hi Eric thanks for posting this. Been watching your vids for awhile now and I have been learning since mostly about valve to throat ratio and coefficient of discharge. Im learning to port not car heads but small motorcycles. Single cylinder hemi heads thats almost the same looking ports like the ones you port. I will wait for your next vid about porting the exhaust before I port mine. Regards from the Philippines!
You sir are a master. LOTS of time in a pair of heads.
Some heads come with a ramp in the intake port. The old TBI chevy had them and the LS heads have them. Seems this would direct flow to the center back side of the valve. Do they really promote swirl? Why do some people remove them? Thanks
It's an attempt to introduce swirl entering the chamber and bore. However swirl, a form a turbulence, is not an indicator of power in and of itself. It is removed when you need more area, in which case power is increased for most applications on a running engine, not on a bench.
Nice Video Eric, Any chance of showing us the porting of a single plane manifold? eg the Ford CHI you gave us a glimpse of?
Eric I have a question I have a set of 351 c 2 v heads Aussie heads my question is the exhaust vale hole has a hole for heat riser is there any to fill that up thanks
Thanks weingartner. I remember a picture of a SBC head you ported in the Engine Master’s. If it truly was the head on the engine your technique has improved considerably. I am getting much older now and my hand isn’t a steady as it once was. But I have comfort in knowing I can still get flow whether they are pretty or not. Haha
Maaan!!
I was just thinking if there was a way I could mold shape the inside of the port. Cut away half of the intake and pure a clear epoxy risen around the other half of the mold then you could have a clear view of the head port while flow testing it!!! I think we can do this!!!
For a q&a topic i would like to see a short explanation of your personal experience with those brodix dr wp 1213 sbc heads. Obviously the specs are online but if you've messed with them and your opinions of them.
Thanks for video!
Jesus fkn A Christ, this guy's the best to learn from, best info on YT! Subbed immediately !!!
What about a video about how you design the valve job design / cutter for the different heads .
Alright, so I have a mud bogging truck with a 383, I'm running pro topline heads, I originally ran a dual plane air gap style intake, but it's not doing as I wanted. What's the very best race manifold money can buy for a sbc. I was thinking about buying a Wilson manifold, or should I buy a victor jr and port it myself? Im willing to spend the time necessary to match the ports properly, etc.
Man I have a noob question..lol I cant figure out what I'm doing wrong but how do you keep your bur tool from jumping/skipping around??
I also listen to audio books or Ted talks ect when I'm tig welding ... cant do music because I tend to start dipping to the beat and get shakey lol
trans fluid and change tool speed
He talks about it in one of the previous videos
I ported two heads, both were twin cylinder motorcycle engines, just to learn. Interestingly, the porting seemed to have no effect below 4k rpm, but above 4k the engine really woke up. By 5k rpm it really came alive, pulled like never before. Plus the engine pulled hard way past redline and just sounded sweet as all get out. But the porting did nothing for power below 4k rpm and on a street engine you spend a lot of time at low rpm. My best guess is the factory had the port shapes good enough for a mild mannered street machine.
It is VERY easy to accidentally take away low speed flow on an otherwise efficient head… 😳
can you make something flow really great flow numbers down low and mid lift in the range .050 through .550" lift peak so say everything below that flow really well before peaking at .550-.575" max. Lots of coefficiency , swirl, velocity etc. GEN 1 SBC what heads would you recomend
Also got a question about the video vizard has on the 186 casting head, he puts a 1.94 valve in a 2.02 seat, I myself have ordered a few bare 2.02 heads and I had an old set of 1.94s and dropped it in out of curiosity, even lapped it a bit and it appeared do-able but I didn’t wanna ask and look like an idiot. But after seeing that video, can it be done, I guess it all depends on the seat but it sure would help with unshrouding. Can you elaborate on that?
I've always wondered just why Chevrolet put the 2-3 and 6-7 exhaust ports next to each other? Dodge engines are the same way. You would think that the concentration of heat in the middle of the head would increase the chances of warpage or cracking. Good thing they have 5 bolts per cylinder.
what kind of used heads do you have for drag racing with a big black Chevy 565 or bigger
What information from customer do you need to port a head that is used where rules are restricted?
What would the power gains be on this??
Just started to get more serious about porting and getting more burrs and what not. Now do you polish the intake runners or leave it kinda rougher than the exhaust to help with atomization? What are you using to finish them? I'm mainly doing cathedral port heads, any tips specifically for those style heads? Are you doing any work to the combustion chambers to help with getting exhuast out faster or just better efficiency period?
How do you fight your hands going numb, has carpal tunnel syndrome caught up with you after years of porting? Do you wear wrist braces when grinding?
Hi Eric. Videos are awesome, thanks very much. How exactly does the wing on the port floor help? Have you ever welded that area so the wing could be made bigger? Thx again
Check out Darin Morgans videos on the topic ruclips.net/video/f8XG9T8v-ng/видео.html
@@magnusdanielsson2749 Thanks for the link
Trying to open early track 1 chamber not sure how big I can go do u have any info
Why would you open up the chamber?
Lol... I got really into the video and was looking at some of the shavings and I tried to blow them away through the phone 😆
I'm new here so maybe that has been addressed before but what do you do with the areas where you penetrated into head bolt holes?
Sleeve for structure or weld
Nothing if structure is not sacrificed, a sleeve only takes up more volume
Hey Eric what kind of grinders do you use or what would you recommend? Not sure if you’ve shown them before but if you don’t care can you show the grinders and flex shaft up close. I have a dremel and a couple different brand flex shafts but they just seem cheesy. I really wanna thank you for showing this, watching you and Vizard lately has respiked my passion for wanting to conquer this. I really appreciate what your doing.
Nice work! Question, are titanium inlet valves practical in a street engine? Some have a very small diameter 6mm stem would that be durable long term?
As I understand for street they are overkill. They say that titanium has the strength of a steel and weight of aluminum. Lighter valves let you rev engine higher without valve float but on street that does not really matter.
Thanks @@v6ileib I guess I should have qualified that a bit more, I am referring to a high lift cam with roller lifters and roller rockers and heavy valve springs, I could see an increase in durability if titanium valves were used with lighter valve springs to take some stress off some of the other components.
@@spannerm8335 "Steet" is a broad term indeed :)
@@spannerm8335 ti valves are more for racing engines, You gotta run lash caps and need to install beryllium seats to get decent life out of a ti valve. Pretty overkill and over priced for a motor on the street even if that said motor is modified. You just need stainless valves
Do you do porting on cast iron heads or no
He has mentioned a couple of times that he does not port cast iron heads anymore.
@11:00 about cnc machining really old heads, like Ford 289 '66 , I told customer it could be done when each port would be probed and then for each port the program would be adjusted for core shift or cant or whatever.
Customer: ???
😁
Core shift is not a concern at all with todays CNC's. There is something called digitizing or profiling that has been created for CNCs that are made for Cylinder head porting. The digitizing probe can take reference points within the ports giving the data needed to tell the machine exactly where the ports are. Rottler EM69HP, HASS UMC-1000P, or Centroid A560 would all be capable of doing any cylinder head with any variance in port design, core shift, or repair of a damaged head. These machines make quick work turning a hand 40-50 hour job into 2 hour job. If you are not comfortable with only taking a couple of reference points you could always re digitize the entire head which would still be faster than hand porting. Most 2v heads are around 4-5 hours for digitizing and then about 2 hours for porting.
If you don't know or don't want to learn G and M programing then buy the Rottler. If you know G and M programing but don't have or want to drop 300k all at once then buy the HAAS they offer great financing options. If you are looking for the cheapest of them all but still requires G and M programing then buy the Centroid. 5-axis CNC can provide an opportunity to revolutionize production times for small business such as yourself. Don't be stuck on old info. The CNC world is only getting better and faster.
The CNC machine cuts the same ports in 3d space. If the material is not in the same location on every head then the machine still cuts from the same 3d space no matter if it's cutting nothing or ..125 deep becouse the materials are not in the same location inside the port. 👍
Without giving away trade secrets, how much time should an amateur plan to do a set of aluminum heads?
Don't put a time limit on it. Practice how to use the tools on junk heads first.
Hour per chamber, each for rough/blend/finish
I've been working on a big block Chevy intake from ovalport to rect port. Few hours a night for the last week lol
@7:00 The difference in machining a left or right port......as professional head porter..dont tell me anything.!😁
Whats the purpose of those "wings" you speak of.....
Check out Darin Morgans videos on the topic. ruclips.net/video/f8XG9T8v-ng/видео.html&ab_channel=DarinMorgan
Please indicate make of burrs.
Answered about 20 seconds after I posted.
Thanks so much.
I bought mine at Goodson Tools. They're in Winona.