hp on worked 250r?

[QuAdEr 317]

how much hp do u think a 86 250r with a fmf full exahust, ported n polished cylinder, boed .60 over , wiesco piston ,boysen reeds, pro design cool head, k&n air filter, and a 38 mm kehin carb? thanks

[310Rduner]

Probably in the High 30's, low 40's. More if it is built right, and properly tuned.

[deathman53]

I would say high 40's at the peak, about 38 in normal conditions, this is at the crank not rear wheels. they made 38 stock(crank) pipe will add a few and the combo of mods would add about 10 or so. but real wolrd power would be about mid to loww 40's at the top

[AndrewRRR]

Originally posted by deathman53
I would say high 40's at the peak, about 38 in normal conditions, this is at the crank not rear wheels. they made 38 stock(crank) pipe will add a few and the combo of mods would add about 10 or so. but real wolrd power would be about mid to loww 40's at the top

Stock they were closer to 30 or high 20's.
Depends on the porting, coolhead dome size, and other variables. I'd say you are probably between 35 and 50.