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yzfbooch

2001 426 cylinder compression?

2 posts in this topic

Looking at 01 426 tommorow and wondering what range it should be in? No top end work done to bike according to seller.

TIA

Joe

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If it's still a manual deompression engine, it should be in the brutal range. :thumbsup:

About 175-200 psi. Standing on the crank should support a 180 guy for several seconds. If he's done the '03 cam modification (the auto decompression cam from a 450) it will be more like 105-120 at cranking speeds.

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