After searching on d-series.org i found a page that stated the compression ratio using everything d15b2(block/pistons..) and a d16y8 head would give about a 10.5:1 CR. I am assuming thats with 1 y8 metal head gasket. I know this is awesome of a ratio for N/A power but it seems like with that much compression tuning of the ecu and fuel pressure is required.

Would using 2 y8 headgaskets bring it down around to 10.1:1 as that seems safer or no?

 

Not at all, I have the same setup with a single y8 head gasket. You will have to get an adjustable cam gear to help even things out. I run the cam gear retarted about 1/2 tooth and then the distributer advanced to compensate but still a little retarded.

Initially I had the cam gear advanced and the distributer retarded all the way but it ping'd like crazy.

 

Ok that seems pretty good then, so you didnt have to do any fuel tuning or ecu tuning at all?

I know thats usually at like 11.5:1 CR but 10.5 is still high so i just wanna be sure..

 

I'm gonna do a compression test in the next week or so to verify cause I plan on doing a low boost setup in the next few months. But yeah, no tuning involved. I am using a stock pm6 right now until I can get it chipped to correct the fuel map when vtec is engaged.