2008 700 Overheat issue Help!!
So I'm having an overheat issue, let me give you some background and I hope you might have some suggestions!!
In January I bought a used 2008 700. It seemed to run ok the 15 minutes I ran it, and the guy seemed honest. Well... It had a blown head gasket. Not being real familiar with the engine, I took it to be repaired. They replaced the blown gasket, but some new piston rings and cylinder rings on, also repaired a stripped cylinder stud or bolt. When I got my old parts back, I noticed the thermostat they took out was physically damaged. It seems as if the post in the middle, where the unit opens and closes, has some type of plastic that it's made of, and it seemed to have melted out. I know that's hard to understand, but if you can imagine the thermostat in it's full open, full flow position, the post in the center was kind of bent, and plastic was melted out of it. So of course they put a new one in. Well I got it back, it was February. So all seemed well till late April, buy then I had say 20 hours on the repair. Here in Florida, the temprature gets warmer then, and it seemed to affect me, on a ride where we were stop and go I'd see the overheat light come on, and boil some small amount of coolant off. If I let it sit 5 minutes, it would cool down quickly. So I bought a temp gauge kit from Black Rhino, and found out that my fan comes on at 210, turn off at 180, but when it's hot out, and riding a little harder or faster, the system can't keep up and it creeps up to 250 and the light comes on. So it seemed like maybe the thermostat was bad again, I took it out, same things, plastic melted out of the center post, and it was jammed open. So I put a new one in, made sure to bleed the thermostat housing, make sure it was topped off and went out again this weekend. During the heat of the day she would creep up and turn the light on. Evening rides it would creep up to maybe 215 or 220. Keep in mind, when the gauge says 210, the coolant at the cap opening of the radiator is 10 degrees cooler, 200.
Any thoughts?? There seems to be decent flow when I look in the radiator. Is there an aftermarket thermostat that won't fail? I don't mind buying a larger radiator, but I want to make sure I'm not band-aiding a bigger problem...and I wonder who everyone recommends or has experience with in regards to the larger radiator?? Thanks for your thoughts and help with this!!