[FFColburn]

have a 1993 TRX300EX that I rebuilt the top end of the motor a little over a year ago, bored 50 over, I also did some custom work in mounting a winch on the front of it. Some of the riding I'm doing is on trails in the woods and its hot humid and even alot of mud in some places, well the point being is that when I'm winching either mine out or another ATV out and its sitting still at idle during this time it seems to over heat and even after a long period of time will die on its own, will restart with little to no problem, so I'm kinda looking at putting a cooling fan on it with a manual on/off switch and run it when winching and running when its really hot, just to move air around the motor when its not moving since it is an air cooled motor not designed for idle sitting or obviously really doing the type of riding I'm doing, just wondering if any one has ever done this and how well it has worked?

 

[tomgodd]

I have read in several threads on other forums about people putting an oil cooler on a 300ex.
I beleive someone here has done it in the past aswell.

 

[Helmut]

I have read in several threads on other forums about people putting an oil cooler on a 300ex.
I beleive someone here has done it in the past aswell.

If I'm not mistaken, Slammed Ranger put an oil cooler on his.

 

[tomgodd]

Well I know mud99 has a fan on his oil cooler on his 400ex. That is the mod I would suggest. Both an oil cooler and a fan.

 

[tomgodd]

mdopole has an oil cooler on his.

 

[FFColburn]

How did they go about putting the oil coolers on theirs? Pictures, descriptions etc, gains? Procedures on how to install, other wise I'm thinking a 7.5" fan that can move roughly 440 CF/M and no oil cooler unless I can find some more info about it. Just seems like it is alot more work than it is really truly worth.

 

[tomgodd]

Check out thread 300ex oil cooler.
THere is something called a jagg oil cooler. IT gives you an idea of what you are looking at. I do not know the + or - of having one. I would asume it helps or people would not do it.

 

[tarheelblues]

seems like it would be easier to get something a little more suited for the riding you like to do,,promise i dont mean it as rude as it sounded

 

[FFColburn]

Oh trust me I'm looking but this one doesn't owe me anything and it would be nice to still keep it around in case we end up a few more people than ATVs.

 

[zabrooks]

I trail ride a lot in the woods, some mud, lots of rocks, and sometimes I am not opening up my quad as much as I would like to. I wouldn't trade it for a thing.

I have been thinking of adding a cooler and a fan, I would like to use a fan from a 450R and the cooler from a 400ex. All you need to do is soft pipe it into the oil line that runs from the head down to the clutch cover. It is relatively easy I just have not gotten around to it. If you keep your eyes open on ebay you should be able to find a few coolers. Or go with a brand new one... they are around 70$ shipped from thumpertalk.


As for the capacities after the cooler is installed I wouldn't know. I was going to use the guess and check method myself.