Aircooled 250r with mods... hp estimate?

[aaron7]

Saw another thread and this had my wondering...

84 ATC250r
.060 over
Boysen cf reeds
Bill's pipe
Watercooled 250r carb jetted accordingly

What might this put down for hp?

[Brad200X]

I'd guess high 30's. I don't think reeds add any HP, just throttle response, and A .060 over piston is only gonna add a fraction of a HP. Most of your HP is gonna come from the pipe and the carb, which are probably good for an extra 3-5 HP each I'd think. I don't know much about the Bill's pipe though, so it might be more. If its anything like the Bassani I have, I'd say you got at least 5 HP from the pipe alone. Yeah, I'd say around 8 HP over stock. My $.02.

EDIT I just noticed that you have carbon fiber reeds. I think those are good for 1-2 HP, but I'd still say around 8 HP over stock. For some reason I thought you said Pro reeds lol.

[aaron7]

Ok cool. I didn't know what these had for HP stock either so that's neat to know.

[Brad200X]

I think they only make 30HP stock.

[SYKO]

get that thing ported if you want to put out some more numbers!

[cr480r]

I think they only make 30HP stock.

and that is probably crankshaft hp.. not rwhp..

[The Goat]

yeah...not at the wheels...not a chance stock. stock it's the same as a 350x maybe a half a hp more.

[Brad200X]

and that is probably crankshaft hp.. not rwhp..

Yeah at the rear wheels no way. I will say that these Airfoolers have so much detuning built into them that they take power adders really well. Seems like they free up more power than you'd expect.