Originally Posted by EA6BMECH
Are there any bugs stuck in that grill? Get real close and see if you can look through the cooling fins. Next, did you put that crap tap water from down there in it when you mixed it?? That will form deposits in the cooling tubes. You can be fooled even if you run a hose through it and let it drain. You'll assume the flow is good, but they can still be clogged up enough to cause your problem. How many miles are on that thing?? Run an on/off switch to the fan to turn it on yourself. I do that on track days. I also rigged up a screen on my radiator.
No bugs, I (did use tap water) with water wetter before I left to the keys and needless to say thats what sat in the bike whilst I didn't get a chance to ride it that often
I tried to flush it as best I could by putting a high pressure hose and letting it flow through.
I replaced the radiator cap with a Stant's 10233 cap, and let the bike run at idle, it reached 212, then cooled to 210, then just stayed about 212 with the can coming on and off, will try to get a ride in to test it
If this doesn't work then it may be buildup in the radiator or the hoses?