This Oldsmobile 324 Rocket cylinder head has a crack, watch John Edwards as he repairs is at Costa Mesa R&D Automotive Machine. (949) 631-6376 Be sure to “Cl…
324 Oldsmobile Cracked Cylinder Head Repair
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Cracked, Cylinder, Head, Oldsmobile, repair
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your hot engine cracked the head , only way to repair that is to weld that head !
Nice work, tidy repair!
The head is made from cast iron. It can be welded, but requires furnace brazing – which I don’t have or use.
If that is a steel head couldn’t you just weld it?
I can see when the head heats up. crack is going to get bigger. definitely would not use on high-performance application
How so?
that is crazy
I didn’t, I pushed it on thru with a punch.
How did you pull the drill out that you broke in the head ?
An interesting method, basically replaces the crack and surrounding area with new metal.
how would u fix a vw aircooled head that has a crack between the valves and do u know why my heads cracked there?bug was running really hot but don’t know if that was beacause of the cracked heads or the hot engine cracked the heads,what u think?thanx
Fascinating, the pressure from the plug pushes the crack tight.
Wow. That’s neat.
See if you can find a copy of my book “Sunnen’s Complete Cylinder Head and Engine Rebuilding Handbook” I describe the who process there.
Same question I have.
Great video. I’ve never seen a head repaired in this way (i’m only familiar with the welded method). I fail to understand how installing a few threaded plugs in the affected area effectively seals up the full length of the crack. Please enlighten.
I would drill the holes like you do.
but i would remove all of the crack.
and then heat the materiel to around 200 degreas celsius.
weld one string at a time with a esab OK 92.18 elektrode. prick in order to stabilize the cast iron.
Love your movies!
Same way.
use J-B weld it fix everything lol
What would the be approach if the cylinder head had the crack on the exhaust tide. How would the exhaust valve seat be dealt with!
doesnt seem like that would hold up!! but after watching many of your videos i wouldnt doubt your skills by any means!! thanks for posting all of your videos!!
so heavy in weight not even diesel engines (low compression gas engine) and they still crack = poor material.
t lil fiat engines are alot lighter, have alumium heads and still tougher, just my guess
sure… it looks like the parts to repair this were about 10 bucks max… the drills were probably 50 bucks each and the saw was about 10… u can get a reman for 100? if so let me know 🙂
what about the areas between the plugs? Aren’t these areas still cracked?
whats the air powered device you used at the end ?
Very nice and smooth repair John Edwards. I’ve used this process 12-15 times over the yrs. and had no return problems. I’ve also drilled the end of the cracks, ground out the crack, and welded it with brass. It also works fine. But your way always made me sleep better at night. Once again, good job.