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Everything Dirt Bike
Make / Model Specific
Yamaha
Yamaha releases 2 new 250f Cross Country bikes.
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<blockquote data-quote="TurtleShifter" data-source="post: 178848" data-attributes="member: 217"><p>Well, they knocked down the compression from 13.5 down to 11.8. Don't know about the crank. Just going on Yammi's reputation and my own experience i think the odds are good. I never adjusted my valves on my '07 WR until I actually replaced them in 2013. In those 6 years I never even looked at the valves, no adjustments or anything. The bike felt like it was running just as strong as the day I first rode it. Only reason I went into the motor was to put the YZ cams in. Paul at ASRacing said the valves were still in spec.</p><p></p><p>Now, if you want to talk about the carburetor, that's a different story<img src="https://www.dirtbikeaddicts.com/static/images/smilies/eek.gif" class="smilie" loading="lazy" alt=":eek:" title="Eek :eek:" data-shortname=":eek:" /></p><p>[ATTACH=full]23837[/ATTACH]</p></blockquote><p></p>
[QUOTE="TurtleShifter, post: 178848, member: 217"] Well, they knocked down the compression from 13.5 down to 11.8. Don't know about the crank. Just going on Yammi's reputation and my own experience i think the odds are good. I never adjusted my valves on my '07 WR until I actually replaced them in 2013. In those 6 years I never even looked at the valves, no adjustments or anything. The bike felt like it was running just as strong as the day I first rode it. Only reason I went into the motor was to put the YZ cams in. Paul at ASRacing said the valves were still in spec. Now, if you want to talk about the carburetor, that's a different story:eek: [ATTACH=full]23837[/ATTACH] [/QUOTE]
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Everything Dirt Bike
Make / Model Specific
Yamaha
Yamaha releases 2 new 250f Cross Country bikes.
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