Hey Art, Tim here, ya know, ya cud remove the steps in the chamber for the valves/seats easily, JUST DONT HIT A GUIDE OR SEAT!!.....and low lift flow (Tq) wud increase dramatically......Just a thought, dont know what ur wantin to really do.....but i DO know that blending aids in low lift flow, and a 30° back cut on the intakes wud bolster the blend.....NOT change ur seat angle, just let the air roll over more easily......again, just thoughts......wish you the BEST my brother!!!......enjoy what ur doin!!!
I like that the motor you started with was a throw away. With nothing to lose you were able to save a poly from the scrap monster. And very cheaply! Well done!
Brings back memories of us working in the 80's as kids at my friend's dad garage. those were the days when all we had to worry about was working on cars and girls. LOL
On the exhaust valves when you had them out should’ve back faced them it’s free horsepower and doesn’t take that long ones there out and clean. Tony has a video on it if you’re not aware.
Underline budget: this one goes in the "just need to get the thing running" category to kick it into next year... been there, done that, but never did get a t-shirt. I must have been cheap or something, and can't complain to management cause there was none!
there are tons of "low-buck" engine freshening videos but most are hacks or do a super poor job at filming. i appreciate your walk-throughs doctor art. well done... more please!
I pull out the valve an inch to check the valve guide. if it wiggles or if there's no suction when you put your finger over the valve stem, the guides are worn.
Thanks! You brought back great memories of me and a buddy doing up,a 318 back in 1980. We were able to get some stuff done on the heads at a machine shop as well. (Back when they were plenty and cheap) Enough of my mumbling. Nice video & info!
I used to used an air file (pneumatic air block sander) to clean up the head surfaces. I'd gently work it, running it evenly at a 45° angle. Works great! Good advice Dr. Art!👍
Very good home home grown rebuild job on the cheap remember this is not an airplane at six 7000 feet it will work just fine we're not looking for 100,000 miles
Few years a ago I built a 1988 LA318 roller cam for my 1979 Trailduster, lapped the valves and new valve guides, wriggle the valves to feel stem wear, it runs good, my Chevy 454 I did last year had them rebuilt at machine shop 500$ already had hardened valve seats and good guides or would of been 900$.
To clean valves I chuck them in a drill and put some lapping compound or fast orange hand cleaner in a rag put the valve in the rag and let er ripp (with pumice which btw does work as a fine lapping compound too)... Ill also use the drill to lap valves.. I have a 3/4" thick piece of glass I spray glue sandpaper to for surfacing... I was able to surface a pretty badly warped ls head with some 60 grit, careful measuring and a lot of patience this way and I have used the pneumatic body file on iron and aluminum blocks too but mine was definitely not flat when I got it.. i made it flat using my glass plate which I do check on a granite reference surface now and again
A lot of manufactures and machine shops don't bother with lapping valves thinking with the attitude " Oh it will wear in ", a lot of times it doesn't and a lot of horsepower lost to. Nice work doc .
I had a machine shop do a valve job on my boats 4.3 engine Got them back,put them on,cranked it over and it just kept backfiring. Checked timing ,valve clearances ,everything looked right on Worked on it 3 hours a day for 2 days. Still backfiring. Took one head off, tilted it and filled the ports with gas. The gas flowed past some of the valves. Brought them back to the shop, owner said he didn’t hand lap the valves. Said it wasn’t necessary they will wear in a seal. Told him I couldn’t even get it to start to wear them in. Besides it had hardened seats. I lapped them myself and it started right off and runs like a top today. Couldn’t get any refund for my time or gaskets.
My methods of valve lapping has been done either with a drill or done by hand with a lapping tool. After I wipe the lapping compound out of the valve and the valve port, I put a little bit of oil on the valve and I relap the valve with just oil. what that does is, it smooths down the sealing surfaces of the valve and seat. I repeat the same process to all the valves before I install the seals, springs and retainers. I make the valves and seats as smooth as possible so that carbon doesn't foul up the valve seats. I noticed that small block Mopar heads are really similar to chevy V8 heads
Just wondering what shape the valve guides are in. That would be the only thing that wouldn't be able to be addressed, freshening up the heads as you did. They must be fine, as you completed a good, backyard freshening of them and assembled them. I know they will be fine from my own experience, lol.
Hey Art,
Tim here, ya know, ya cud remove the steps in the chamber for the valves/seats easily, JUST DONT HIT A GUIDE OR SEAT!!.....and low lift flow (Tq) wud increase dramatically......Just a thought, dont know what ur wantin to really do.....but i DO know that blending aids in low lift flow, and a 30° back cut on the intakes wud bolster the blend.....NOT change ur seat angle, just let the air roll over more easily......again, just thoughts......wish you the BEST my brother!!!......enjoy what ur doin!!!
Great Job!!!
I like that the motor you started with was a throw away. With nothing to lose you were able to save a poly from the scrap monster. And very cheaply! Well done!
Brings back memories of us working in the 80's as kids at my friend's dad garage. those were the days when all we had to worry about was working on cars and girls. LOL
Well done Dr.!!!
On the exhaust valves when you had them out should’ve back faced them it’s free horsepower and doesn’t take that long ones there out and clean. Tony has a video on it if you’re not aware.
Cleaned up nice
We knurled the valve guides and vut valves and shimmed. Springs
Also cut valve stems for. Casote valve. Guide seals
Underline budget: this one goes in the "just need to get the thing running" category to kick it into next year... been there, done that, but never did get a t-shirt. I must have been cheap or something, and can't complain to management cause there was none!
there are tons of "low-buck" engine freshening videos but most are hacks or do a super poor job at filming. i appreciate your walk-throughs doctor art. well done... more please!
The motor is looking great, and this quick series is really encouraging for the guy on a budget!
I pull out the valve an inch to check the valve guide. if it wiggles or if there's no suction when you put your finger over the valve stem, the guides are worn.
Great how to Dr. Art, thanks for showing us how to do it. Can't wait till you get it all together and put it in Big Richard and fire er up..
Thanks! You brought back great memories of me and a buddy doing up,a 318 back in 1980. We were able to get some stuff done on the heads at a machine shop as well. (Back when they were plenty and cheap) Enough of my mumbling. Nice video & info!
Like to have seen the body file at work on the gasket surfaces
Good video Art, progress is going very well!
Super shiny Dr. Art! Almost a shame no one will see the valve work after the the heads are torqued on!😆
Good job I was waiting for some comment on the valve guide condition and how much you could get away with as far as worn guides.
I used to used an air file (pneumatic air block sander) to clean up the head surfaces. I'd gently work it, running it evenly at a 45° angle. Works great! Good advice Dr. Art!👍
Looks like they turned out pretty well. Keep on smiling.
Good stuff, The only thing i would consider adding is how to check the valve guides and stems for excessive wear. .
👌🏼⛽️
Eventually… gotta do on a sbc 350 ( 72 smog motor ( McKinnon plant )
That engine would be a good one to put in Large Marge while hers is being rebuilt................Jay
Cool , good stuff !😊
I have done this many times. Keep in mind if the guides are worn and the seats and valve faces are pitted lapping won't do much good.
Very good home home grown rebuild job on the cheap remember this is not an airplane at six 7000 feet it will work just fine we're not looking for 100,000 miles
👍👍
Definitely a valve lapping video
I wanted to see all 16 valves
Ah, the ole krylon rebuild. India special.
excellent video ,yes show us the lapping procedure , please
Few years a ago I built a 1988 LA318 roller cam for my 1979 Trailduster, lapped the valves and new valve guides, wriggle the valves to feel stem wear, it runs good, my Chevy 454 I did last year had them rebuilt at machine shop 500$ already had hardened valve seats and good guides or would of been 900$.
looking good!
To clean valves I chuck them in a drill and put some lapping compound or fast orange hand cleaner in a rag put the valve in the rag and let er ripp (with pumice which btw does work as a fine lapping compound too)... Ill also use the drill to lap valves.. I have a 3/4" thick piece of glass I spray glue sandpaper to for surfacing... I was able to surface a pretty badly warped ls head with some 60 grit, careful measuring and a lot of patience this way and I have used the pneumatic body file on iron and aluminum blocks too but mine was definitely not flat when I got it.. i made it flat using my glass plate which I do check on a granite reference surface now and again
A lot of manufactures and machine shops don't bother with lapping valves thinking with the attitude " Oh it will wear in ", a lot of times it doesn't and a lot of horsepower lost to. Nice work doc .
I had a machine shop do a valve job on my boats 4.3 engine Got them back,put them on,cranked it over and it just kept backfiring. Checked timing ,valve clearances ,everything looked right on Worked on it 3 hours a day for 2 days. Still backfiring. Took one head off, tilted it and filled the ports with gas. The gas flowed past some of the valves. Brought them back to the shop, owner said he didn’t hand lap the valves. Said it wasn’t necessary they will wear in a seal. Told him I couldn’t even get it to start to wear them in. Besides it had hardened seats. I lapped them myself and it started right off and runs like a top today. Couldn’t get any refund for my time or gaskets.
😁🇬🇸👍
Brand new used.😎👍
My methods of valve lapping has been done either with a drill or done by hand with a lapping tool. After I wipe the lapping compound out of the valve and the valve port, I put a little bit of oil on the valve and I relap the valve with just oil. what that does is, it smooths down the sealing surfaces of the valve and seat. I repeat the same process to all the valves before I install the seals, springs and retainers. I make the valves and seats as smooth as possible so that carbon doesn't foul up the valve seats. I noticed that small block Mopar heads are really similar to chevy V8 heads
New head gaskets ?😊
Should remove ridge on back side of valve head. Helps low lift flow tremendously, it is only there for emissions purposes
Valve lapping video please.
The machine shop frown on lapping because 9 out of 10 that's all you need and it's bad for business.
Good video. Isn't the 68 318 a steel crank engine, or is that the 67 340?
73
Just wondering what shape the valve guides are in. That would be the only thing that wouldn't be able to be addressed, freshening up the heads as you did. They must be fine, as you completed a good, backyard freshening of them and assembled them. I know they will be fine from my own experience, lol.
Great job, Art!
Is't there a easier faster way to clean the engine like letting it sit in a degreaser solvent bath 24 to 48 hours?
I missed something along the way . What is Big Richards purpose in life ? Whats the plan for it ?
Power tour
@@Chuck-w4c Yeah , I figured out that part . But power Tour as what ? A Tow Rig ? A Giveaway , A Joke ? What ? Certainly not any kind of competitor .
In a couple of spots there was pitting and a low area between cylinders. Are you concerned about sealing or blowout between those cylinders?
I remember my first beer
The stick with a suction cup on the end with some compound works perfectly for a regular high mileage rebuild.
Once you get big Richard back together you better do burnout
O hell yes