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Everything Dirt Bike
Make / Model Specific
Honda
'87 Honda XL250R running hot/pops oil/jetting?
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<blockquote data-quote="Tubecatgs" data-source="post: 221609" data-attributes="member: 4885"><p>Ok, just spent a summer bringing back to life (minor restoration) of a Honda 1987 XL250r from the grave.... If I knew then what I know now I would have just bought a newer running bike. I like these projects but over budget and this model is really a 2 year model bike and parts are really hard to find... This includes overpaying for a NOS dual carb set up from overseas.... haha</p><p></p><p>Anyway, finally got it back from the shop as they did a top end rebuild for me and installed the new carb and got it running. Starts good and idle good. However, after I ride it and it gets warmed up, it starts to pop a bit at an idle only. I am running Premium 93 octane (all I can get around here). I haven't looked at the plug yet but I was told thee bikes like to run hot and should go with one size larger jets (should that be a main jet one size larger)?</p><p></p><p>Also, what oil should I be using. I have heard synthetic oil has a lower break in viscosity of some sort (probably saying it wrong), providing less friction meaning the bike might run cooler. I live in Buffalo NY and will be mainly trail riding on my own 76 acres... no racing, not super aggressively etc. I had Yamalube 20w-50 I think but should I run a 10w-40 synthetic like an Amsoil motorcycle 10w-40 motorcycle oil or I have heard Castrol Power 1 Synthetic 4T Motorcycle Oil is really good.</p><p></p><p>Any ideas on how to keep this bike running cooler? I can email a video of the sound it makes when hot and idling if you PM me your email address. Here are some before and after pics....</p></blockquote><p></p>
[QUOTE="Tubecatgs, post: 221609, member: 4885"] Ok, just spent a summer bringing back to life (minor restoration) of a Honda 1987 XL250r from the grave.... If I knew then what I know now I would have just bought a newer running bike. I like these projects but over budget and this model is really a 2 year model bike and parts are really hard to find... This includes overpaying for a NOS dual carb set up from overseas.... haha Anyway, finally got it back from the shop as they did a top end rebuild for me and installed the new carb and got it running. Starts good and idle good. However, after I ride it and it gets warmed up, it starts to pop a bit at an idle only. I am running Premium 93 octane (all I can get around here). I haven't looked at the plug yet but I was told thee bikes like to run hot and should go with one size larger jets (should that be a main jet one size larger)? Also, what oil should I be using. I have heard synthetic oil has a lower break in viscosity of some sort (probably saying it wrong), providing less friction meaning the bike might run cooler. I live in Buffalo NY and will be mainly trail riding on my own 76 acres... no racing, not super aggressively etc. I had Yamalube 20w-50 I think but should I run a 10w-40 synthetic like an Amsoil motorcycle 10w-40 motorcycle oil or I have heard Castrol Power 1 Synthetic 4T Motorcycle Oil is really good. Any ideas on how to keep this bike running cooler? I can email a video of the sound it makes when hot and idling if you PM me your email address. Here are some before and after pics.... [/QUOTE]
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Everything Dirt Bike
Make / Model Specific
Honda
'87 Honda XL250R running hot/pops oil/jetting?
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