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Everything Dirt Bike
General Dirt Bike
Rebuilding Yz 250
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<blockquote data-quote="SRAD97750" data-source="post: 175535" data-attributes="member: 425"><p>You'll be looking for gouges, chipping, or cracking of the nikasil coating typically near the ports edges. Any chipping of the nikasil and it needs a recoat. $200-275.</p><p>If the cylinder bore and crank bearings checks out, you'll need a Piston, Rings, Pin, Pin Bearing, Top end gasket set. You should be able to acquire all this for $100-160.</p><p>Check the top of the piston for the current size. There may be no marking (standard bore), a zero (standard bore), or a +something (oversized piston). You'll need to buy the same piston as installed. -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: 175535, member: 425"] You'll be looking for gouges, chipping, or cracking of the nikasil coating typically near the ports edges. Any chipping of the nikasil and it needs a recoat. $200-275. If the cylinder bore and crank bearings checks out, you'll need a Piston, Rings, Pin, Pin Bearing, Top end gasket set. You should be able to acquire all this for $100-160. Check the top of the piston for the current size. There may be no marking (standard bore), a zero (standard bore), or a +something (oversized piston). You'll need to buy the same piston as installed. -BIG DAN:thumb: [/QUOTE]
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Rebuilding Yz 250
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