I am doing a 2.5 conversion to a 1998 turbo terzo,I have re-worked the heads and they had a very light skim how do i work out what thickness head gaskets to use or do i just put standard?

 

IIRC 1.6mm. Speak to Mark at Lateral to be double sure

 

just done the EJ25 mod myself and after much research, advice, CR calculations, etc I opted for the standard Subaru gaskets (the Metal laminate ones)

My heads were ported, polished and matched... and also had a light (0.003'') skim

 

Which standard ones? Subaru make 2 thicknesses