Is JB Weld good enough to repair a chipped/cracked cylinder head?
Answers:
no it wont work anyone that knows anything about cars should not have given you some of these answers you can not repair a cracked head with anything you cant weld it or use jb weld it is trash you need a new head the only thing this one is good for is a paper weight you can pick one up at a junkyard cheap take it to a machine shop and have it reworked it will be best to do both sides not just one
It should, but it's not a good idea.
Take your head to a machine shop and have it rebuilt.or get a new one.
i wouldn't try it.
If the metal eroded so will the jb weld
I wouldn't recommend it for that application. JB Weld is great, but your cylinder head is really not the place for it.
If you have the head off, and the engine taken apart, you are better off replacing the head with a rebuild or new, or if it's not too bad, have it professionally repaired.
The labor time it takes to get in there is WAY more trouble than the expense of the replaced/rebuilt head.
You obviously already have the head off. I would recommend taking it to a machine shop and having them build up that area and machine it back down. .or replace it. You could also find a like head at a junk yard and overhaul it yourself. .but to answer your question..
Yes it can. Before you use the JB Weld make sure you clean and degrease the areas very well and then roughen the surfaces to be "welded" before application.
hehehehhehe yeah um sure it will. That's why fixing cracked heads is so inexpensive. Take it to a mechanic
Like any other epoxy-type compound, the bonding surface has to be clean and stable. If you get all, and I mean all the foreign matter out of the crack and get the JB into the crack, the JB will hold for "awhile". Most of the stories about JB are short term fixes, not long term. I highly recommend having the head replaced or having the current head welded. It will probably be cheaper to replace.
it wont work, have it welded properly or buy a new head. dont risk the money to have to do it again. you have to have a seal good enough to seal out the combustion chamber pressure and those can get up there
No combustion pressure 25,000 psi and temps as high as 14,000 degrees trying to hold water back with epoxy filler "J&B Weld" the stuff is amazing but not for this job. Either weld repair the area and re machine the head surface or replace the cyl head.
Have it welded with aluminum weld,than take it to a machine shop and have the head resurfaced.
Don't use JB Weld
That would be like useing bubble gum
HELL NO NO NO NO !!
Try that and you'll be the laughing stock of "yahoo answers"
Have it weld repaired at a machine shop, the JB Weld wont, hold up to high temp or pressure.
take the head to your nearest machine shop they will tell you if it can be repaired and if so who can do it.
Absolutely not. Is this a cast iron head? What year? Best to pitch it in the scrap pile and get a new head. You are wasting your time. Wish I had better news. Good luck.
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