I have lots of hi-performance mods done to my raptor. It was fine for the first year and a half or so. Now it seems to overheat everytime I ride it. Tried everything hi-performance radiator and the works. Nothing seems to help. Can't find anything mechanical or otherwise wrong with it. It runs very very strong. Would appreciate any ideas. I am also looking for an alcohol conversion kit for the carbsl. Can't seem to find one anywhere. Any ideas would be great.



raptor has:
JE 12.5 to 1 forged piston
Hot Cams Stage 2
Titanium valve springs and retainers
some head porting
aftermarket clutch
jet kit
k&n filter-no lid on box
yoshi full exhaust
dyna adj. ingnition box
fluidyne radiator
engine ice coolant
um oil tank +1quart

 

maybe an oil cooler might help

 

Assuming that your valve lash is fine and you're not loosing any coolant, it's probably time to rebuild/replace your water pump.

 

ive seen hi-performance water propeller things. i guess those work.

 

water pump, bad coolant, do they have t-stats in them?

 

Thats a nail hit on the head.

 

thanks for the ideas, i have replaced everything in the cooling system...thermostat, waterpump, and some of the hoses...it still gets hot and pissed off at me when i ride it...lol....i cant figure it out....it was fine and now its not


.......how about the alcohol conversion kit for the cabs.....any ideas...it would solve the heat issue and make more power...lol...never enough power

 

You need to fix your problem, not change something else that is unrelated. I realize you've hit a lot of dead ends and spent a lot of money and must be very frustrated, but alky is not the next step.

There were a couple people running alky on stock carbs, but not many and no one for quite a while. I don't know of a kit, but Mikuni might be a good place to start looking.

 

Is your fan coming on? I have to replace my fan thermostat about once a year. On the 4th one since new.

 

flush it out. and try a new t stat. there not always good. wait it blows off at you? maby the cap is shot