Which Head Gasket?

[Edge]

Do head gaskets change the compression?

What is the difference between

stopper type and super grommet type and metal type?

Oh and if they do change compression - what is standard compression on a R33 GTS-T series 2

[neo32]

dont think it will matter u can only get one type for rb's

[SLY33]

im not up to scratch with my differences b/w gromet/stopper type etc,

but std comp is 9:1, different gasket thicknesses give different comp ratios. The method of dropping the CR right down in order to run big boost is kind of out the window these days, with most ppl keeping the comp up for good drivability. most tuners ive spoken to recently have recommended not to go lower than 8.5:1