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?
At The Back Of The Pack
Arm chair racerAt the back of the pack
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?
At The Back Of The Pack
Arm chair racerAt the back of the pack
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.
Last edited by Brad200X; 05-06-2009 at 03:31 PM.
Rides I own:
'85 200X(old smokey)
'81 ATC250R(Bassani pipe, Wiseco piston, Vesrah rod, and AMS offset rims)
'84 KXT250 Red(the new money pit!)
'96 KX125(FMF pipe, Boyesen reeds, One Industries graphic kit, etc.)
'85 KX125(vintage racer. Technically it was a practice bike)
'78 DT400(the lone Yamaha)
At The Back Of The Pack
Arm chair racerAt the back of the pack
Ok cool. I didn't know what these had for HP stock either so that's neat to know.
At The Back Of The Pack
Arm chair racerAt the back of the pack
I think they only make 30HP stock.
Rides I own:
'85 200X(old smokey)
'81 ATC250R(Bassani pipe, Wiseco piston, Vesrah rod, and AMS offset rims)
'84 KXT250 Red(the new money pit!)
'96 KX125(FMF pipe, Boyesen reeds, One Industries graphic kit, etc.)
'85 KX125(vintage racer. Technically it was a practice bike)
'78 DT400(the lone Yamaha)
Check my feedback before buying from me
Catch me if you can
get that thing ported if you want to put out some more numbers!
Power User
Got the holeshot
and that is probably crankshaft hp.. not rwhp..Originally Posted by Brad200X
2-stroke lover
Power User
4 Wheels? Huh?
yeah...not at the wheels...not a chance stock. stock it's the same as a 350x maybe a half a hp more.
At The Back Of The Pack
Arm chair racerAt the back of the pack
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.
Rides I own:
'85 200X(old smokey)
'81 ATC250R(Bassani pipe, Wiseco piston, Vesrah rod, and AMS offset rims)
'84 KXT250 Red(the new money pit!)
'96 KX125(FMF pipe, Boyesen reeds, One Industries graphic kit, etc.)
'85 KX125(vintage racer. Technically it was a practice bike)
'78 DT400(the lone Yamaha)
Reply With Quote