View Full Version : 84 atc250r power mods?
Islandbiker5000
05-22-2013, 12:45 PM
Hi all..i have a totally factory 84' atc250r and was wondering what kind of inexpensive power modsi can do. What do aftermarket reeds do? Do i need to re-jet after any of these mods. Thanx guys yiur info is greatly apreciated
barnett468
05-22-2013, 03:21 PM
Hello Islandbiker5000
PERFORMANCE REEDS – I’ll leave that for someone that has put them on their bike.
STOCK PIPE/SILENCER – The cheapest easiest way to more hp is replace the stock silencer with an aftermarket one. A non spark arrestor type will give you a little more hp than a spark arrestor type but can’t be used in many areas.
The second thing might be some porting with head mod to match followed lastly by an aftermarket ex pipe.
PS - Just curious, are you the same person whose bike was blowing lot’s of white smoke, had low crank case oil level and possibly a bad crank seal 2 months ago? If so did you get it fixed and what was it?
barnett468
05-22-2013, 03:26 PM
And a slightly bigger carb. Many think replacing a 32 mm carb with a 40 is going to get them a lot more hp on a mild motor but all it really gives them is a big flat spot when the open the throttle, lol.
Islandbiker5000
05-22-2013, 09:33 PM
Yeah that was me lol i got it fixed it was my clutch side crank seal
HondaRidr
05-24-2013, 11:31 AM
A aftermarket pipe and 34mm carb make a big difference. Reeds make the throttle more responsive and crisp.
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