I just have a question about oem hg's. I planning on putting together a new d16a6 with 0.020" over pistons--75.5mm, my question is do the oem hg's, specifically the d16z6 hg have a big enough bore to accomodate 0.020" over, or will I have to go with Cometic or something like that? I notice Cometice sells both a 75mm HG and a 75.5mm HG--I would prefer to use a d16z6 oem HG but I just want to make sure the bore on the HG is big enough.

 

I believe you can put up to a 0.5mm over piston in (0.020" over) without any issues. Looking at mine right here, this is a true statement.

Nathan

 

Cool, thanks for the info. Yeah, I have 4.3cc dome, 75.5 (0.020" over) SRPs going in, I read somewhere else that a stock oem gasket will accept up to 0.020" over--I would much rather use the d16z6 oem HG (0.037") which is like half the cost as a 75.5mm 0.030" Cometic--I trust the oem HG over Cometic anyday of the week--although I have never really had a problem due to the HG with a Cometic....