head gasket thickness?

[4g63telantra]

Just wanted to know what are some pro/cons of running a thick HG or a thin one?
How would i know what "thickness" of head gasket to get and what does it depend on?

 

[VRC Racing]

Wow, talk about a question that can generate a lot of opinions.

Changing the headgasket thickness can be done for several reasons. The most common is to correct for having the head or block decked after a rebuild. The idea here is to maintain the factory spec on valve timing.

Another reason to change headgasket thickness is to raise or lower the static compression of the engine. The cam timing is then corrected by using adjustable cam gears and degreeing the cams.

-Russ

 

[4g63telantra]

well how would i know what thickness to use? Im sure a shop would know betetr then me but i would just like to know what is the "best" thickness? (btw ill be running a t3/t4 turbo and also got the arp head studs with .020 over bore and 8:5:1 com in the block) if that helps