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Everything Dirt Bike
Make / Model Specific
Yamaha
The 1999 YZ250
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<blockquote data-quote="Trfsrfr" data-source="post: 216521" data-attributes="member: 3959"><p>After getting thrown from that nasty pig WR Saturday morning, I find that its damn hard to pick that thing back up afterwards. Especially when you've just had your daily beating.</p><p>Add some mud and its 300 lbs. Enough is enough.</p><p>So I'm resurrecting the YZ250. It's 50 lbs lighter, and thats a done deal. If you'll recall it got parked last year with a ticking noise.</p><p></p><p>Compression with the carb off and not running for 6 months tested out at 201psi, then I tore down the top end and had a look. </p><p>Everything looked okay except for the ring end gap was at the max .037, and there was some play in the wrist pin bearing, which I'm hoping is the ticking noise. Everything else looked good. Cylinder measurements are near stock.</p><p></p><p>I put in a piston kit, an OE bearing, and I'm waiting on head seals. I'll know Wed if the ticking noise is gone...</p></blockquote><p></p>
[QUOTE="Trfsrfr, post: 216521, member: 3959"] After getting thrown from that nasty pig WR Saturday morning, I find that its damn hard to pick that thing back up afterwards. Especially when you've just had your daily beating. Add some mud and its 300 lbs. Enough is enough. So I'm resurrecting the YZ250. It's 50 lbs lighter, and thats a done deal. If you'll recall it got parked last year with a ticking noise. Compression with the carb off and not running for 6 months tested out at 201psi, then I tore down the top end and had a look. Everything looked okay except for the ring end gap was at the max .037, and there was some play in the wrist pin bearing, which I'm hoping is the ticking noise. Everything else looked good. Cylinder measurements are near stock. I put in a piston kit, an OE bearing, and I'm waiting on head seals. I'll know Wed if the ticking noise is gone... [/QUOTE]
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Everything Dirt Bike
Make / Model Specific
Yamaha
The 1999 YZ250
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