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Kawasaki MX & Off-Road Dirt Bikes
Eric: 03 KX250 Motor???
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[QUOTE="Marcad, post: 511036, member: 17503"] I recently purchased an 03 KX250. It's a great bike but it needs help in the motor department. Plenty of bottom, though a little sluggish and plenty of mid. You had mentioned that you heard somone tell you that there was a possibility about a defect in the design of the powervalve and that it might be what's causing the engine to go flat on top. Have you heard or learned anything else concerning this motor? I would like to try to get some more top end pull. I once had a 98 KX250. It too was a bottom to mid motor but made the bike a lot easier to ride. Had a stronger hit and didn't fall flat the way the 03 motor does. What can be done to make the 03 motor more like the 98 motor? Are there any porting fixes? Could more displacement help? The 03 and 98 cylinders share many parts. Even the powervalve mechanism seems to have gone through very little change. Can the 03 cylinder be swapped with the 98 cylinder? Really would like to do something soon. I'm going to try a V-Force reed cage, jetting and maybe a pipe but would like more than just a band aid fix. The bike is a dream but now I need it to rip!!! [/QUOTE]
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Dirt Bike Discussions By Brand
Kawasaki MX & Off-Road Dirt Bikes
Eric: 03 KX250 Motor???
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