Yfz450

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  #1  
Old 04-01-10, 07:04 AM
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Yfz450

I have an 05 and an 06 450 but for some reason if i start at a dead stop with both, the 05 will kill the 06, the 06 tachs out extremely quick, theyre both timed Identical, and the sprockets, tires, and valve springs are all identical, any ideas? Im going nuts, I also changed the CDI boxes on them and they both do what they were doing before, 05 flies, 06 slow, any ideas would be greatly appreciated
 
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Old 04-01-10, 07:26 AM
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Join Date: May 2006
Location: Iowa!!!!!
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If the 06 is taching out as fast as the 05 with the same load on both, the clutch may be slipping. Past that, it would be in the air flow through the engine = air filter/box, combustion chamber carbon, then exhaust.

In a 220 yd run, how much difference is there?
 
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