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JIMTED79

YZ450F compression?

10 posts in this topic

Want to get a new top end and want stock compression does anyone know what that would be for a 2004 YZ450F?

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So his is completely stock, and you drag race, right? :applause: That won't work with my '06.

Try this: ride his bike for 15 minutes, then roll off 3 timed laps. Then compare that with your best three on yours.

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See I had an '04 and my '06 at the same time and the '04 seemed weak compared to my '06 when jumping off one to the other.

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Yea my buddy has an 06 and it hawls ass he ends up always faster than my 04 must be the 5 speed :applause::lol:

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You heard wrong. The drop in compression was the byproduct of changes made to the combustion chamber to improve the head. A 0.2:1 drop in compression is inconsequential.

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