400ex what is the compression ratio?

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May 4, 2000 | 03:45 AM

hakmazter

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I just put the xr400 headgasket in, just wondering if anyone knew what my new compression ratio is?

May 4, 2000 | 10:44 AM

86atc250r

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9.3:1 ? That's the stock XR400 compression ratio...

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