I have a guage on the inlet and outlet right now. The fan comes on at 215 f. With the larger surface area of this cooler, the convection currents keep it around 160 to 180 if you're moving around.

If you're stopped or in mud it'll eventually come up to 215. When the fan comes on, it will have it back to 180 in about a minute or two at most.

The fan runs less than half the time that it did with the factory cooler setup. even on 100 degree days.

You can put your hand over it and feel the convection air current coming from it, almost like a built in fan.

It hasn't ran hot since i put this setup on it four years ago.

 

MonZooki, Great idea for the pump! I will have to pick one up to carry with me. Just one word of caution for other suggestions. Be careful of extra screening. I used to be involved in testing air flow and results indicate that even a plain screen in a house window will decrease the airflow by approximately 50%

 

I agree, I will say that if you put a screen or shield in front of it allow as much space as is practical between the screen/shield and rad/cooler. many atv's come with a screen or shield in front of the cooler. I have tested three differnent factory fans with an anemometer at a lab where i worked and didn't get a reduction in airspeed fron the fan until i closed the inlet air restriction down to less than a .75" slot 36 inches long.

In other words if the gap between the screen and radiator/cooler is 27 square inches you may be safe. You still need to test a new application.

If the screen is 12 x 12 and 1" from the radiator you will have 48 square inches of opening if the rad is as big or bigger than the screen. If it is smaller add the extra clearance between the edge of the rad and the edge of the screen to your total air gap.

It will take some observations for your application to make sure it works ok for that model. I can tell you that i have been experimenting with this very setup for over four years with good results.

 

You should cary one of these with you when you go muddin. ATV-Shower-Radiator-Washer. As soon as that radiator gets clogged, rinse her out. Also try using a better oil. I run Amsoil Synthetic oil Formula 4-Stroke Synthetic Motor Oil SAE 0W-40 This oil really seems to keep the heat down where it should be.. . Hope this helps.
Zig

 

Zig,
Does the 12 volt pump has a fair amount of pressure for washing the mud out?

 

Its good enough on the trail thats for sure