787 and 718 piston sizes?

[617mach 1x]

hey guys, going to have a summer project going on, I'm going to big-bore me sled (iknow i know wrong forum) but i need 83.5 mm pistons

wiseco says that the 718 and 787 both use 83.5mm pistons when Over-bored


if someone has a used 718 or 787 or both piston that they send me that would be great!! i could measured them (deck,pin location etc..) and see what route to take with this thing

thanks
kevin

 

[Dr Honda]

Yes... the are the same size, but the have a different pin hight, and they are NOT interchangeable.

 

[617mach 1x]

i know there not interchangable but this would be going into a big bore mod motor for my skidoo rotax 793cc non ho

what happens is i cant get over sized pistons for this sled, plated cylinder

but i know i can have them bored to 83.5mm and have them replated and do some major port work

is 83.5mm a size avalable for the seadoo engien when there over bored?