What's good Honda-Tech! I'm putting together a mini-me swap and want to use the Cometic .027 head gasket for a bump in my CR. My question is; will I be able to stay obd2 and run around a 10.20:1? Or will I need to chip and tune? Thanks in advance.

 

In a Datsun 280z?
Zealautoworks compression calculator should give you an idea. You're not going to see a big gain.

 

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