Do you have to machine heads when replacing head gasket?
You’d hate to have to redo something like head gaskets because of something so like that. Again its all up to you. You don’t have to machine them, but its not a bad idea.
Can bad timing cause a blown head gasket?
Pre-Ignition Problems: If the timing of the combustion process is off even slightly, it can send too much pressure into the cylinder head. This can cause the head gasket to fail. If this happens, you may notice the car running roughly, especially when you first start the engine or at idle.
Should I machine my head?
With aluminum heads, it’s particularly important that the mating surface is extremely clean. If you have any doubt, it’s best to have a machine shop mill the head. Once the head has been made clean, visible inspection for cracking is usually effective.
How long does it take to machine a head?
I would expect a shop to take a minimum of three days of elapsed time, up to five, with about four to six hours of labor, plus an hour at a machine shop to resurface the head.
How long does it take to replace a cylinder head gasket?
The labor time to replace a cylinder head gasket is 7.5 hours, or 11.9 hours to replace both cylinder heads. The engine is a four-cylinder boxer with two cylinder heads, with camshafts in the heads run by a timing belt.
Do you have to replace timing chain after head gasket change?
Ordinarily, there is no replacement interval on a timing chain, and unless an engine has very high miles, the timing chain would be re-used after a head gasket replacement. But on this particular engine, there is a high failure rate for the timing chain, and replacing it would be recommended while it is off for the head gasket work.
How much does it cost to replace apex head gasket?
An Apex head gasket cost (kit) would be about $86. With normal machine shop and fluid costs, this takes the job about $1906 to complete. Ordinarily, there is no replacement interval on a timing chain, and unless an engine has very high miles, the timing chain would be re-used after a head gasket replacement.