Cylinder head thickness [Archive]

paul-11turbo

12-08-2009, 20:44

Ok so what is the thickness of a standard unskimmed head and what is the maximum that can be taken off.

What actually happens when a head that has been skimmed a few times is fitted to the car?

does it lose power or just not run?

Kris M

12-08-2009, 20:48

73.5mm is standard IIRC ???

TrickyDicky

12-08-2009, 20:56

Ok so what is the thickness of a standard unskimmed head and what is the maximum that can be taken off.

What actually happens when a head that has been skimmed a few times is fitted to the car?

does it lose power or just not run?

skimming raises the compression ration, if you have a haynes manual it should contain all necessary info and dimensional details. if not let me know and i'll see if our autodata has the info.

:)

raj

12-08-2009, 20:59

What actually happens when a head that has been skimmed a few times is fitted to the car?

does it lose power or just not run?

skimming the head makes the car a little more responsive, it also lowers the detonation/pinking threshold. but there are ways around it. a few people run high comp engine without any significant probs.