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MX, SX & Off-Road Discussions
Dirt Bike Mods & Maintenance
Is Eric Gorr in the House??(125 tuning)
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[QUOTE="EricGorr, post: 209806, member: 19611"] Marcus, the quality of the casting on the 01&02KX125 is fairly clean and the port heights and widths seem very consistent. I've been staring at the new exhaust valve for 2 days. I see how its more reliable but I question the performance aspects. The valve is too thin to influence the effective stroke and the sharp edge exposed in the port when the valve is closed has to cause a shock wave that could show a torque trough on a dyno graph. I don't understand why Kaw doesn't employ the same type of plunger valves as Husky. I think the Patent has lapsed on that design. Another thing that Kaw could do is to change the shape of the exhaust manifold between low and high rpm. I've heard that Pro Circuit has different shaped manifolds with bushings to seal the pipe, similar to a KTM. Marcus...Are there many guys racing Husky 125s in England? My friend Bud has one and its got the best low to mid response of any 125 I've ridden so far. Reader notes: Effective stroke (power-stroke from TDC to exhaust port open) [/QUOTE]
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MX, SX & Off-Road Discussions
Dirt Bike Mods & Maintenance
Is Eric Gorr in the House??(125 tuning)
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