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Everything Dirt Bike
General Dirt Bike
Gonna be a first time 2t owner... 02 kx250
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<blockquote data-quote="2smoke" data-source="post: 54793" data-attributes="member: 563"><p>Jos is pretty close on his numbers. Over the winter I had my bike on a dyno. I made nine pulls. The first three were to get a base line. The middle three were to get the bike dialed in on jetting. The last three where where proof positive. First three pulls the bike made 40 hp. After the jetting adjustments and a power valve spring adjustment the bike make 42 hp. The final three pulls also included some little tweeks on the carb with the jet needle and air screw. But the final three pulls the bike made 45 hp on a 50\50 mix of 91 octaine, and 105 octaine fuel, with a freshly broke in topend, new FMF head pipe, fresh repacked FMF power core, and new Boyesen rad valve with dual stage carbon fiber reeds. And my bike is 19 years old. So a much newer unmodified bike should make atleast that much hp. A modified bike with similar mods to mine should pretty close to 50+ hp.</p></blockquote><p></p>
[QUOTE="2smoke, post: 54793, member: 563"] Jos is pretty close on his numbers. Over the winter I had my bike on a dyno. I made nine pulls. The first three were to get a base line. The middle three were to get the bike dialed in on jetting. The last three where where proof positive. First three pulls the bike made 40 hp. After the jetting adjustments and a power valve spring adjustment the bike make 42 hp. The final three pulls also included some little tweeks on the carb with the jet needle and air screw. But the final three pulls the bike made 45 hp on a 50\50 mix of 91 octaine, and 105 octaine fuel, with a freshly broke in topend, new FMF head pipe, fresh repacked FMF power core, and new Boyesen rad valve with dual stage carbon fiber reeds. And my bike is 19 years old. So a much newer unmodified bike should make atleast that much hp. A modified bike with similar mods to mine should pretty close to 50+ hp. [/QUOTE]
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Everything Dirt Bike
General Dirt Bike
Gonna be a first time 2t owner... 02 kx250
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