What would be the maximum bore on a standard 31K cylinder?
Wiseco pistons go as far as 66.5mm but in my opinion you could go even further to 68mm or so. I heared that with bigger bores you need to modify the powervalves. Anyone info regarding this mod?
Anyone experience with bigger bores like 67mm?
Want to use 67mm Yamaha DT175 pistons and a stroker crank to tune my engine.
Any info is welcome
Thanks,
Pico
Maximum bore on a standard 31K cylinder?
Moderator: rztom
Maximum bore on a standard 31K cylinder?
You don't have to be afraid of the 100 horses underneath the seat of a motorbike, but beware of the donkey that's driving it......