Posts
94
Joined
11/6/2015
Location
Alabaster, AL
US
I have a CR250 that had been modified with the Eric Gorr 265 big bore kit. Yesterday I competed in an extremely muddy hairscramble event and almost didn’t finish due to the bike overheating. I’ve never had this happen before and assume it’s bc of the very muddy conditions, getting the bike stuck and having to rev it out. Symptoms the bike had was boiling over through the radiator overflow (I use engine ice also), bike losing bottom end power, and engine rattling/ticking. I have another race coming up in two weeks and plan on tearing the bike down and replacing the piston/rings. Is there anything else I should check/replace that could have been effected by my engine overheating like that? Any reason to split cases and dig into the bottom end?
My intent is to rebuild the top end after the overheating episode (new piston and rings). Is there anything else I may need to check that could be affecting by overheating....is it worth splitting the cases to check the bottom end?
The Shop
Japanese OEM caps are typically 1.1 Bar
I have an 03 with the stock TMX I ran round and round trying to find decent settings and occasionally had overheating that I firmly believe where related to carb and jetting.
I finally found a local JD jetting Keihn Airstryker carb I snatched up for a killer price and haven't had a hint of overheating or surging after wide open uphills or other extended full throttle situations.
Good luck and thanks for keeping America 2 stroke!
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