Cylinder head milling question.

[Spenser624]

How much can be milled off a 2.0t cylinder head without any problems.

[aluthman]

Depends on what you consider problems. After more than a few thousandths, you would want to consider a thicker head gasket to get compression back to normal and to prevent problems with the timing belt.

[Spenser624]

The shop milled off .015 from stock. Will I have to run a thicker head gasket or should it be fine?

[aluthman]

That's probably about the limit of where you would be ok with a stock headgasket. I don't know at what point you would run into timing belt issues. Keep in mind your compression probably just jumped up by .4 of a point. If you are doing a stock rebuild, you should be ok. If you are doing a performance build, you will want lower CR pistons, a thicker head gasket, meth injection/E85, or all of the above to prevent detonation.

[Spenser624]

It's a stock rebuild. Just making sure I won't run into problems in the future.

[vce1232000]

Your ecu will compensate by timing and fuel trims in case of detonation. I would keep highest octane fuel available in tank due to ed compression

[vvenom800tt]

Why are you doing .015? Do as little as you can get away with guy.

.005 should be doable if not then .01

[Spenser624]

I told the machine shop to take off little as possible, clearly they didn't listen. Not the first time I've had problems with their service. I won't be going there anymore.