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Non high compression pistons for 750GT

Posted: Mon Sep 16, 2019 9:11 am
by rightsideup
My GT is on the first oversize at the moment, compression readings seem low to me - 110psi rear and 100ish on the front. Should I be thinking of new pistons and the next oversize and if so, what recommendations for a 'normal' piston

Re: Non high compression pistons for 750GT

Posted: Mon Sep 16, 2019 10:14 am
by geodoc
Probably want to do a differential compression test first to determine valve as well as rings seal. Might save you a mort of work & $.

G





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Re: Non high compression pistons for 750GT

Posted: Mon Sep 16, 2019 11:33 am
by BevHevSteve
AKA a leakdown test.....

Re: Non high compression pistons for 750GT

Posted: Mon Sep 16, 2019 2:11 pm
by rightsideup
Leakdown it is - thanks comrades!