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Everything Dirt Bike
General Dirt Bike
Engine seized; Found the problem, What else do I need?
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<blockquote data-quote="jquest" data-source="post: 221878" data-attributes="member: 4951"><p>Found out what caused the seizure on my 03 yz250f. (check pic below) Instead of replacing the valves, I was thinking of buying a used whole cylinder head in good condition for a very good price. It comes with everything including the valves. Or should I just replace that one broken valve?</p><p></p><p>Here is my list of parts I think I should replace. Is there anything else that I am missing? Would appreciate your input!</p><p></p><p><strong>Piston & Rod set</strong></p><p></p><p><a href="https://www.ebay.com/itm/Wiseco-Piston-12-7-1-77mm-w-Connecting-Rod-YZ-250F-2003-2004-4872M07700/372128885140" target="_blank">https://www.ebay.com/itm/Wiseco-Piston-12-7-1-77mm-w-Connecting-Rod-YZ-250F-2003-2004-4872M07700/372128885140</a></p><p></p><p><strong>Crank Bearings (Should I?)</strong></p><p></p><p><a href="https://www.ebay.com/itm/Yamaha-YZ250F-Main-Crank-Shaft-Bearings-Kit-01-02-03-04-05-06-07-08-09/323253706253" target="_blank">https://www.ebay.com/itm/Yamaha-YZ250F-Main-Crank-Shaft-Bearings-Kit-01-02-03-04-05-06-07-08-09/323253706253</a></p><p></p><p><strong>Cam Chain</strong></p><p></p><p><a href="https://www.ebay.com/itm/2001-2013-YAMAHA-250F-WR250F-YZ250F-OEM-Cam-Timing-Chain-94591-53114-00/172152667474" target="_blank">https://www.ebay.com/itm/2001-2013-YAMAHA-250F-WR250F-YZ250F-OEM-Cam-Timing-Chain-94591-53114-00/172152667474</a></p><p></p><p><strong>Complete Gasket Kit</strong></p><p></p><p><a href="https://www.ebay.com/itm/Tusk-Complete-Gasket-Kit-Top-Bottom-End-Engine-Set-Yamaha-YZ250F-2001-2013/401262883774" target="_blank">https://www.ebay.com/itm/Tusk-Complete-Gasket-Kit-Top-Bottom-End-Engine-Set-Yamaha-YZ250F-2001-2013/401262883774</a></p><p></p><p><strong>Viton Valve Seals </strong></p><p></p><p><a href="https://www.ebay.com/itm/2002-2013-Yamaha-YZ250F-Performance-Viton-Valve-Seal-Set-WR250-5-Seals-YZ250/122136340676" target="_blank">https://www.ebay.com/itm/2002-2013-Yamaha-YZ250F-Performance-Viton-Valve-Seal-Set-WR250-5-Seals-YZ250/122136340676</a></p></blockquote><p></p>
[QUOTE="jquest, post: 221878, member: 4951"] Found out what caused the seizure on my 03 yz250f. (check pic below) Instead of replacing the valves, I was thinking of buying a used whole cylinder head in good condition for a very good price. It comes with everything including the valves. Or should I just replace that one broken valve? Here is my list of parts I think I should replace. Is there anything else that I am missing? Would appreciate your input! [B]Piston & Rod set[/B] [URL]https://www.ebay.com/itm/Wiseco-Piston-12-7-1-77mm-w-Connecting-Rod-YZ-250F-2003-2004-4872M07700/372128885140[/URL] [B]Crank Bearings (Should I?)[/B] [URL]https://www.ebay.com/itm/Yamaha-YZ250F-Main-Crank-Shaft-Bearings-Kit-01-02-03-04-05-06-07-08-09/323253706253[/URL] [B]Cam Chain[/B] [URL]https://www.ebay.com/itm/2001-2013-YAMAHA-250F-WR250F-YZ250F-OEM-Cam-Timing-Chain-94591-53114-00/172152667474[/URL] [B]Complete Gasket Kit[/B] [URL]https://www.ebay.com/itm/Tusk-Complete-Gasket-Kit-Top-Bottom-End-Engine-Set-Yamaha-YZ250F-2001-2013/401262883774[/URL] [B]Viton Valve Seals [/B] [URL]https://www.ebay.com/itm/2002-2013-Yamaha-YZ250F-Performance-Viton-Valve-Seal-Set-WR250-5-Seals-YZ250/122136340676[/URL] [/QUOTE]
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Engine seized; Found the problem, What else do I need?
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