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i building d16z6 useing PM6 Pistons i want to get the most compression i can what hG shoud i used ?
 

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i would go witht he oem y8
 

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I might be wrong but I think spoon use to have a high compression head gasket for the D series but it was like $150 don’t remember if it was for the Z6 or not.
 

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Has the been milled if so how much ! if its never been touched w/ the pm6 pistons and z6 head and z6 head gasket you'll 9.9-1 cr w/ a 2 layer y8 gasket 10.2-1 cr and if the heads been milled you might get more... just dont take to much !!!!
 

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Sorry i'm still learning, so by what i know now. I can put a 2 layer Y8 oem headgasket on my jdm d15b (z6 head) and bump compression by .3 of a point? No milling to the head of course.
And where would i go about ordering one at?
Thanks
Nick
 

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OEM HG is .027" thick, not .037. I've preached about the "2-layer" enough..
 
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