A couple things...
1. As deanrowski wrote. Get a UTV Inc. "Fan Override kit". Then as I do, when you roll out of camp, flip the switch "ON". The radiator cooling fan will come on and run until you switch it "OFF".
I run my all the time. Just to keep the temp in the 178 to 187 degrees. I'm running just a few degrees warmer now as my new transmission has the 12% gear reduction.
2. Give some consideration to moving to Engine Ice coolant. Its a premix and supposedly good for 10 degree cooler temps. I'm running it!
3. The SuperATV HD radiator is a very nice piece! Aluminum and the most beautiful TIG welding I'd seen for a while. It does come with the correct brackets for install. I designed the lower one.
4. Getting the air out of a Prostar engine is different than an 800 engine. No need to raise the front end as the air collects in the top of the cylinder head. I just posted it a few days ago. But...
take a 1/4" drive ratchet and an 8mm socket. When the engine is cool...so you don't burn your fingers. Under the aluminum, flexible, heat shield over the exhaust head pipes, and right behind the cab...it has a raised portion on the Driver side of heat shield, just sorta bend that up, under it feel around until you find the bleeder screw. It ain't very big and it's between the exhaust ports. Put the socket on the bleeder screw and loosen it.
If there is air the system you will hear it hissing as it escapes. If you get all the air out you will feel a bit of coolant come out. Close the bleeder screw, don't get carried away and overtighten it.
Take the machine for a ride and see what the temp does. A friend had to do four heat, cool, bleed cycles to get all the air out. Last week I did mine and it only took once to get all the air out, but
it did hiss for more than just a few seconds.
5. For me it was get a Gilomen ECU, or send yours in and have the full program installed. Your machine will run so much better. No missfire issues...even if you've never had this experience, you
won't. Terry richens the Air/Fuel mixture and that good for about 10 degrees cooler running. So much more that you can read on the Gilomen Innovations website.
I did learn about washing the "dust" out of the radiator. The key here, use just a garden hose, or a garden how with a spray nozzle. Using a pressure washer will bend the tiny fins and close the air
passages. Amazing how much dust came out of that radiator. Gotta get some of that AC Condenser foam cleaner.
Keep in mind that long uphill pulls will make temperature rise. Mine will get to as much as 201 degrees. A good reason to move from "H" to "L". If necessary slow down some. May still be hotter
than you're used to, but top out and the temp will start to drop immediately.
Just the Pirate writing another book on the forum.
does the fan engage while it is overheating? On my 2020 General XP4 failed the 30 amp circuit breaker fuse early on and overheated quickly. Some times it would reset, but eventually I had to replace it.
