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View Full Version : looking into a stroker



yoshimura400
06-03-2004, 09:18 PM
i was looking and alot of people are strarting to strok there motors. i have a stock bore and was wondering if i got the poweroll 4mm stroker crank, drop in cam on a stock piston, bored or new rings if needed what would the coat and how much power would i get out of a set up like that. the motor runs geat doesnt smoke or knock at all.

i have a yoshimura full pipe k and n filter and sparks digree key on the bike how much more power could i get out of a stroker and cam? thank!

thumperex
06-03-2004, 09:30 PM
If you go with the 4.5mm stoker(which is what powroll offers) you have to change the piston it will be 4.5mm higher on tdc.

yoshimura400
06-03-2004, 09:32 PM
what would i have to change it to

INFANTRY RACING
06-03-2004, 09:32 PM
i don't know exactly how much hp i make but get a stroke, piston, and a cam, and you'll be good to go.

mines running a stock cam and with my motor setup and 16/36 gearing i can still lug it around the mx track in 3rd gear through corners

INFANTRY RACING
06-03-2004, 09:34 PM
on powrolls heavy duty rod crank(which is what you want) you can run any 400ex piston you wish to

yoshimura400
06-04-2004, 02:57 PM
i am going to call them up next week and get all the info i need and price.

will i still be able to ride it all day on the trails with the stroker.

i know how a stroker works and all i drag race a 1989 mustang 5.0 and i know thay can be daly drivers but thats a lot more cooling on one of thows motors than striked small air cooled motor.

INFANTRY RACING
06-04-2004, 09:35 PM
i run very high compression and ride about every day on the track.