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Registered
Join Date: Sep 2015
Location: Costa Rica and Pennsylvania U.S.
Posts: 3,301
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90mm
You need a slight bevel in the head for the larger 90mm piston.If it is a 90mm 2.7 RS style you need a longer rod to get the CR to 8.5.JE or others can move the pin location up or down to get your desired CR.Ciao Fred
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