Hayabusa heating
- Thread starter Wrenchboi
- Start date
Kiwi Rider
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Check the radiator fan is operating within the correct range and cycling on and off.
E Zurcher
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Something is definitely not right. Have you checked your water pump, hoses for any kinks? You may have a restriction somewhere in the water jacket in the head or block. I'm sure you made sure all air is out of the system. Some Gen 1s overheat in extreme conditions, or when stuck in traffic on a hot day. If you are overheating at 60 degrees you have a big problem.Mine has a new radiator, muzzy fan, engine ice...and STILL overheats at idle in 60* weather
202mphbusa
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Big Bore?Mine has a new radiator, muzzy fan, engine ice...and STILL overheats at idle in 60* weather
Worse...stock motor. No performance mods, except a flashed ECU and intake filter.
Oops! Forgot to add that I have the Schnitz Racing 1.6 cap
Replaced the thermostat when I installed new radiator, and dumped the fluid twice trying to ensure no air was trapped from the first time. I'm tempted to cut out the center of my old thermostat and swap it in just for the summer.
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Hayabusa Wannabe
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@Wrenchboi welcome to the forum. Great name lol.
Fan kicks on like a charm, but it doesn't do enough to keep it cool on it's own...temp goes down, up, down, higher up, and eventually maxes out after a while.
I'd believe trapped air, water pump or head gasket...whitish colored exhaust coming out of the stock pipes
doesn't smell rich
60+ Busa Rider
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First I’ll say I’m not a motorcycle specialist but in the world of hot rods and drag racing assuming the cooling is working then all heat related issues are fuel related. If it’s runs cool at driving speed I would not suspect head gasket or combustion leaking into the cooling system but if you want to check balkamp (NAPA) sells a kit for around 60.00 that has a liquid and tube with a suction bulb that you still in the radiator while running and if there’s combustion in the cooling system the fluid will change color. You may have to Lea little water out so it doesn’t contaminate the test fluid. Also try straight distilled water and a bottle of water wetter with no antifreeze. Antifreeze has the ability to remove heat from an engine but it does a poor job of getting rid of the heat, it stores it. Water wetter is worth about 7 degrees on a big block Chevy. Be careful removing too much of the thermostat, if you have too much flow you may see a heating problem cruising at higher rpm. Again I’m talking hot rods and drag cars, I’m no motorcycle specialist.Mine has a new radiator, muzzy fan, engine ice...and STILL overheats at idle in 60* weather
turbobusa2000
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This is most likely air in your cooling system. Get that thing leaned over to the left and burb it. If this doesn’t solve it you have a gasket issue. These bikes are running super lean from the factory. I’m running a +2mm bore ina turbo bike with no tuning on the stock ecu. With no issues.
Wrenchboi
Registered
Thanks bro you made my day
With the ecu flash, did they set the fans to come on 10-15 degrees sooner?
No clue, ECU was done when @TallTom owned her.
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