Wcrracing221 Posted February 9, 2019 Posted February 9, 2019 Hi guys, Trying to order custom 771 pistons at 11:1 compression for my race bike. The piston manufacturer need the cc of the chambers. Anyone know the stock cc? Does 21 cc make sense? Thanks Dave Quote
Lachie04 Posted February 10, 2019 Posted February 10, 2019 when I rebuilt my motor we measured the Dot head volume at 22.5 ml that was standard not deshrouded I always worry about giving people info like that though and usually give advice to check it your self as I cant guarantee the result 1 Quote
jonny1bump Posted February 10, 2019 Posted February 10, 2019 Totally agree I really don't give advice on specs. Quote
Wcrracing221 Posted February 11, 2019 Author Posted February 11, 2019 No problem. Engine builder measured 21 cc so thats the number I’ll trust. Quote
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