Hey Guys, Just getting into stand ups and have started with a square nose superjet. Specs as im told... Riva Red pipe Carbon tech reeds hot rods crank 180psi compression (skimmed head?) ported aftermarket carb (reverse jetted) (I think) was told its a 701 however I think that's bored to 701 not stock. head (64u) cylinder (6m6) case(61x) Now im pretty sure 6m6 is a 650 cylinder. Which leads me to believe that its been bored to 701. And 6m6 cylinders are supposed to have pretty small/crap port chambers correct? Ok question time. Given the mods listed above. Is there any point in putting in a 61x cylinder in it? Ie will there be much of a power difference? Intended use is to be a muck around surf ski. Not flat out racing. Cheers, Johnny
Boring a 650 out to 701 will take it to pretty much its last bore so after this you need a 61x. If its going sweet just ride it and enjoy When its time for a fresh'n up then look at dropping a 61x cyclinder on it with surf spec port job. Roger at Jetwerx will be able to help you with all of the above.
