Taking off front cooler makes no sense?!

[DA_WILKS]

I read all the threads about taking off the front cooler and it makes no sense to me why it would make it run cooler? You are loosing cooling space and coolant, the more you have the cooler it should run? So can anyone explain to me why?

P.S. I ride trails as much as i ride off so don't now if that would make a difference?

 

[chunkysoup]

I believe the idea behind it is that the coolant that is in the radiator is in a parallel loop(making the radiator seem pointless) and not all the coolant will flow through it so technically it is not being cooled by the air flowing through the radiator. Removing that loop forces all the coolant to flow through the rails and the rear cooler. Someone else will have to chime in to tell me if im right or wrong but thats what i understand.
Where abouts in wisconsin are you from?

 

[defysgravity]

That's correct...out here in the west we have a problem with the nose section being under or blocked by snow which makes it ineffective along with the added extra weight we don't need up in the nose.
There is plenty of rear tunnel heat exchanger and rail tubes to do the job.
Though we use ice scratchers when the trails to the backcountry become bricks because our long track lugs aren't stiff enough to throw up much snow on the cooler on the trail.
Plus.....that front radiator is a nice target for a stump/tree or rock...

 

[06 RMK 900]

Plus.....that front radiator is a nice target for a stump/tree or rock...

Dont forget them sunflower stocks that we have in ND! Biggest Reason I took mine out.

 

[defysgravity]

Dont forget them sunflower stocks that we have in ND! Biggest Reason I took mine out.

You sure it wasn't corn....

 

[Danbot]

Polaris designed the system with a flaw:
From the water pump the coolant hits a Y. (one direction feeding through the radiator loop, and the other through the heat exchanger) Given that fluid will always take the path of least resistance, a large portion on the flow just circulates through the radiator because its a much smaller and closer circuit than the heat exchanger circuit. The heat exchanger is much more efficient, especially off trail

 

[94fordguy]

That's correct...out here in the west we have a problem with the nose section being under or blocked by snow which makes it ineffective along with the added extra weight we don't need up in the nose.
There is plenty of rear tunnel heat exchanger and rail tubes to do the job.
Though we use ice scratchers when the trails to the backcountry become bricks because our long track lugs aren't stiff enough to throw up much snow on the cooler on the trail.
Plus.....that front radiator is a nice target for a stump/tree or rock...

Yup^^^^^

Here's my response from another thread.....

If your a trail runner, your better off to leave it in. The RMK guys that ride the mountains take them out for 2 reasons: Weight savings, and when riding in the trees the radiator setup only makes heating problems worse as the nose cone is often under the snow, preventing air flow to the radiator and causing it to 'boil over' and return that hot coolant back to the motor.

The nose cones on these sleds are incredibly flimsy so if you poke anything into that bellypan, your gonna be losing coolant..... not a good thing. Good idea for those that run trails/hardpack tho, but you still want scratchers to save your hifax, so its kind of a silly setup.

 

[DA_WILKS]

Thanx guy but now can anyone put that dyagram on how to take it out and do i have to pull the motor?

 

[94fordguy]

Thanx guy but now can anyone put that dyagram on how to take it out and do i have to pull the motor?

For removing it, have a look in the "How To" sticky at the top of the page, I believe there are 2 links in there that should explain the process pretty well. No, you don't have to pull the motor

 

[f15ejedi]

If you ride in powder the nose is under the snow a lot of the time, mainly when riding in trees. There is no airflow coming through so it gets hot then dumps all that hot coolant into the rest of the system and the temp goes up. I couldn't figure out why I was seeing a spike until I started climbing with the nose out of the snow. Then it would gradually cool off until I got in the trees again. Once It was frozen on the front screen from crossing a creek or swamp and I ran a little hotter than usual. That is why I pulled mine. I'm going with scratches and no rad this year.

 

[SixtySevenGT]

Port your Track

This makes a hugh diffrence.

Scratchers are a must on almost any trail.


This pic is an example

Porting is usually about 100 bucks. or Try it yourself

I am now the owner of a Nice 2005 900 with a 166 which will soon be ported