how can i know if my yamaha superjet cylinder is big bore? my prox piston is 83.5mm?
Super Jet help
- Thread starter FahadAlAmiri
- Start date
- Location
- detroit MI
what engine did it come off of?
stock is 81 on a 701 engine.
stock is 81 on a 701 engine.
its
its yamaha 701 year 2007 its has mods on it but i dont know if the cylinder is big bore or no
- Location
- detroit MI
"big bore" is a term thrown around for a lot of bore sizes. if it is the stock cyliner than it is over bored. it is bigger than factory bore and about at it's limit of the stock sleeve.
the other time big bore is used is for aftermarket big bore cylinders that usually use a 89-94mm piston. what is the casting number on the cylinder? 61x, 62t, 64u???
the other time big bore is used is for aftermarket big bore cylinders that usually use a 89-94mm piston. what is the casting number on the cylinder? 61x, 62t, 64u???