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Dirt Bike Discussions By Brand
KTM MX & Off-Road Dirt Bikes
Tuning the KTM 380 Barrel / Piston / Head
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[QUOTE="cujet, post: 141837, member: 19501"] I was thinking about your supermotard bike today. I wanted to share my personal opinion about port timing and off road engines. I find that off road engines need a wider torque curve and therefore milder port timing. This may be due partially to the lack of traction and wheelspin. On road 2 strokes do not need as wide a torque curve. The engine can be setup for a torque curve that is just a bit larger than the RPM drop per shift. My example could be a RPM drop of 2000 RPM between 3rd and 4th gear shifting at the top of the "powerband". With a torque curve centered around 7500RPM and 2500RPM wide. This will allow the engine to stay on the pipe in every gear without dropping below the torque curve. I believe an on road only 2 stroke can be modified beyond what the same engine could be for dirt only. Chris [/QUOTE]
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Dirt Bike Discussions By Brand
KTM MX & Off-Road Dirt Bikes
Tuning the KTM 380 Barrel / Piston / Head
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