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Everything Dirt Bike
Make / Model Specific
Honda
1988 CR250R Wont start / Wet Plug
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<blockquote data-quote="SRAD97750" data-source="post: 176584" data-attributes="member: 425"><p>Looks like the rings are about done. All that black on the side of the piston is 'blow-by' from worn rings or cylinder. Can't tell the condition of the piston without cleaning it up and inspecting closely. </p><p>Most of the time it's much easier to just buy a new piston kit, than find the right replacement rings for your piston.</p><p></p><p>You'll need to measure the cylinder with calipers to buy the correct piston kit. For example, this one is about $100 shipped.</p><p><a href="http://www.ebay.com/itm/Honda-CR250R-1986-1987-1988-1989-Pro-X-Std-Piston-01-1315-A-CR250-CR-250-/400736922203?pt=Motorcycles_Parts_Accessories&hash=item5d4dc82a5b&vxp=mtr" target="_blank">http://www.ebay.com/itm/Honda-CR250R-1986-1987-1988-1989-Pro-X-Std-Piston-01-1315-A-CR250-CR-250-/400736922203?pt=Motorcycles_Parts_Accessories&hash=item5d4dc82a5b&vxp=mtr</a></p><p></p><p>I looked for a cylinder for you... VERY EXPENSIVE, even used. 225 for a good one on ebay. Yikes.</p><p></p><p>Your crank rod, is there ANY up and down play? (Side to side play is fine)</p><p>There should be none.</p><p></p><p>Good luck, should you decide this is something you are interested in putting money into, you will be rewarded with the bounty of experience you will gain by doing this work yourself. </p><p>-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: 176584, member: 425"] Looks like the rings are about done. All that black on the side of the piston is 'blow-by' from worn rings or cylinder. Can't tell the condition of the piston without cleaning it up and inspecting closely. Most of the time it's much easier to just buy a new piston kit, than find the right replacement rings for your piston. You'll need to measure the cylinder with calipers to buy the correct piston kit. For example, this one is about $100 shipped. [url]http://www.ebay.com/itm/Honda-CR250R-1986-1987-1988-1989-Pro-X-Std-Piston-01-1315-A-CR250-CR-250-/400736922203?pt=Motorcycles_Parts_Accessories&hash=item5d4dc82a5b&vxp=mtr[/url] I looked for a cylinder for you... VERY EXPENSIVE, even used. 225 for a good one on ebay. Yikes. Your crank rod, is there ANY up and down play? (Side to side play is fine) There should be none. Good luck, should you decide this is something you are interested in putting money into, you will be rewarded with the bounty of experience you will gain by doing this work yourself. -BIG DAN:thumb: [/QUOTE]
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Everything Dirt Bike
Make / Model Specific
Honda
1988 CR250R Wont start / Wet Plug
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