piston Q: are USDM ITR's the same as JDM GS-R's?
Re: piston Q: are USDM ITR's the same as JDM GS-R's? (626ace)
No.
P72 heads have a larger quench pad and a smaller cc volume. P72 head would need a smaller piston dome to hit the same 10.6:1 CR compared to the P73-A0 pistons with a PR3 head.
P72 heads have a larger quench pad and a smaller cc volume. P72 head would need a smaller piston dome to hit the same 10.6:1 CR compared to the P73-A0 pistons with a PR3 head.
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