what causes aluminum heads to warp (and need a cleanup mill)
- Thread starter rockin_rick
- Start date
astronut1885
Founding Member
Blowing a head gasket shouldn't warp the heads, but it may be an indication that they are already warped. If I were you, I'd take them to a machine shop and have them checked for safety's sake. If nothing else, they can mill them, which in your case may be beneficial, because you're N/A, and more compression=more power. Warped heads can cost you a motor bro, it happened to my mechanic's stang. Not worth it IMO.
Mavrick
Founding Member
Aluminum warps when the motor is overheated.. i've seen it first hand with some newer cars taht companies are putting out with aluminum blocks on them.
If your car has been overheated more than once with aluminum heads, chances are they have been warped.
If your car has been overheated more than once with aluminum heads, chances are they have been warped.
88POSLX
Founding Member
rockin_rick said:
Depends on how warped. They'd need to make it straight again, so they'd machine it to the low spot in the warp.
anytime you take off a cylinder head it doesn't hurt to have it surfaced or at least checked.it's cheap insurance to insure that the jobs done correctly and it's not that expensive.personally never believed in the slip and slide method on head gaskets,i've had to redo too many because people before me did this and 6 months later they had the same problem.
payupsucka
Member
most aftermarket cylinder heads wont warp on overheating but if they are hot and the head gasket blows it could happen . i did with my 87 i had years back but i also blew it with like 200 hp of nos going thru it
Ray III
New Member
If the engine is run continuously with a blown gasket gases rushing around can erode the aluminum head surface.
When overheated, aluminum expands faster than iron so if the heads get too hot they will buckle away from the block to relieve the stress. Depends how much and how often you overheated them, sometimes they warp so much that they cannot be recovered by milling.
I've had MY experiences with the accursed things and will be sticking to solid cast iron here on out.
When overheated, aluminum expands faster than iron so if the heads get too hot they will buckle away from the block to relieve the stress. Depends how much and how often you overheated them, sometimes they warp so much that they cannot be recovered by milling.
I've had MY experiences with the accursed things and will be sticking to solid cast iron here on out.
