quadrdr77
05-07-2012, 07:41 AM
needing a little help, im used to yfz450's and i now own a trx450r that is mx built. its an 05 with port work, web 208/921 cam, 14-1 piston and a dasa exhaust.
problem-1 i raced one moto saturday night and had to fill the radiator half way back up, noticed the fan isnt coming on could thermostat be stuck open?
problem-2 after the race the bike quit on me when pulling off the track and would not start back until it cooled off. my fcr carb thats on it does not have a hot start should i purchase one that does have a hot start and that is my problem? only asking bc this is the second race on this motor since being completely rebuilt and the first race it had a full sparks big core and started fine after it got hot but it was in the 50's for temp and last saturday night it was in the high 80's with 100% humidity.
the carm has dirt bike needle 2 1/2 out on air screw and a 188 main with 52 pilot. any help here guys would be greatly appreciated. thanks
problem-1 i raced one moto saturday night and had to fill the radiator half way back up, noticed the fan isnt coming on could thermostat be stuck open?
problem-2 after the race the bike quit on me when pulling off the track and would not start back until it cooled off. my fcr carb thats on it does not have a hot start should i purchase one that does have a hot start and that is my problem? only asking bc this is the second race on this motor since being completely rebuilt and the first race it had a full sparks big core and started fine after it got hot but it was in the 50's for temp and last saturday night it was in the high 80's with 100% humidity.
the carm has dirt bike needle 2 1/2 out on air screw and a 188 main with 52 pilot. any help here guys would be greatly appreciated. thanks