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Everything Dirt Bike
Make / Model Specific
Yamaha
The 1999 YZ250
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<blockquote data-quote="SRAD97750" data-source="post: 212259" data-attributes="member: 425"><p>Piston to cylinder clearance. It is something I can never get anyone to post their specs on, when building an engine. Even when specifically recommended. I assume it's because they aren't taking the measurement, which makes it hard to report as correct. Funny, it's a big step in every service manual I've ever read.</p><p>Typically you get the cylinder worked and honed<strong> to</strong> a new piston kit. Send in the new piston with the cylinder. And then double check prior to assembly! -BIG DAN<img src="https://www.dirtbikeaddicts.com/static/images/smilies/thumb.gif" class="smilie" loading="lazy" alt=":thumb:" title="Thumb :thumb:" data-shortname=":thumb:" /></p></blockquote><p></p>
[QUOTE="SRAD97750, post: 212259, member: 425"] Piston to cylinder clearance. It is something I can never get anyone to post their specs on, when building an engine. Even when specifically recommended. I assume it's because they aren't taking the measurement, which makes it hard to report as correct. Funny, it's a big step in every service manual I've ever read. Typically you get the cylinder worked and honed[B] to[/B] a new piston kit. Send in the new piston with the cylinder. And then double check prior to assembly! -BIG DAN:thumb: [/QUOTE]
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Everything Dirt Bike
Make / Model Specific
Yamaha
The 1999 YZ250
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