Making the Pro run cooler?

The Fourth Wolf · Dec 21, 2014

As has been alluded to, this is a sled that was purpose built for deep snow and when in deep snow has absolutely no issues with temps unless there's something else wrong.

Normal operating temp is 125* +/- a degree or two.

I run hard, icy trails a lot and while I don't like seeing my temps over 150* it's not hurting the sled. The potential issue you run into with a hotter running temp is the sled is more susceptible to detonation.

IIRC 194* as indicated on the MFD is when ignition time is interrupted.

I run stock scratchers and find the faster I go the cooler the sled runs when snow is thin. Poking along on a rough trail to the hills or in a bigger group where you can't maintain 15-20 MPH and you WILL overheat in just about all conditions.

LoudHandle · Dec 21, 2014

The Fourth Wolf said:
As has been alluded to, this is a sled that was purpose built for deep snow and when in deep snow has absolutely no issues with temps unless there's something else wrong.

Normal operating temp is 125* +/- a degree or two.

I run hard, icy trails a lot and while I don't like seeing my temps over 150* it's not hurting the sled. The potential issue you run into with a hotter running temp is the sled is more susceptible to detonation.

IIRC 194* as indicated on the MFD is when ignition time is interrupted.

I run stock scratchers and find the faster I go the cooler the sled runs when snow is thin. Poking along on a rough trail to the hills or in a bigger group where you can't maintain 15-20 MPH and you WILL overheat in just about all conditions.

While you may not notice it at slower speeds on the trail, the ECU starts clipping the timing whenever water temps are below 98* or above 127*

Quoted from TRS a well respected Polaris Guru "The ECU and engine like temps north of 98* and south of 127*." He posted this in another thread regarding the PRO RMK and it's marginal stock cooling abilities.

Dirty Steve · Dec 22, 2014

friscospices.com said:
its so retarded polaris hasn't fixed this problem

If you ride a trail sled on bare pavement, it will overheat....

You can't really call it a problem when the sled isn't being used for it's correct purpose.

YOOPERREV · Dec 22, 2014

I must say it seems as though if you dont live/ride in the west it is assumed that you must trail ride. I do not trail ride my Pro, i have owned mountain sleds since 02 and have not used them as trail sleds. Believe it or not most of Upper Michigan where i live is very rough, deep and steep. Do i have the elevation that you do in the west no, but do we have extreme terrain also YES! Last year we had over 300" of snow!

I am sure that there are some in the west that also have seen the Pro run hot and just wanted to see if there were any options.

TRS · Dec 22, 2014

YOOPERREV said:
I must say it seems as though if you dont live/ride in the west it is assumed that you must trail ride. I do not trail ride my Pro, i have owned mountain sleds since 02 and have not used them as trail sleds. Believe it or not most of Upper Michigan where i live is very rough, deep and steep. Do i have the elevation that you do in the west no, but do we have extreme terrain also YES! Last year we had over 300" of snow! I am sure that there are some in the west that also have seen the Pro run hot and just wanted to see if there were any options.

UP is a low elevation deep snow wonderland. Would be nice to have that low elevation power at my altitude.
Edit: I am a Northern Wisconsinite transplanted to Wyoming.

YOOPERREV · Dec 22, 2014

Yes it is! We go west twice a year and it sure is a change in power between 1400' and 10,000'!

RMK 163 · Feb 11, 2016

Ex-Flit said:
I found keeping things off the tunnel help. buy a rack that gives an air space. a lot of the tunnel bags help to hold heat but the best thing to do is the $28 kit. 111 degrees all day long in any condition.

What is the $28 kit? The wife's 2011 pro overheats when ever on a rough trail..

NorthMNSledder · Feb 11, 2016

RMK 163 said:
What is the $28 kit? The wife's 2011 pro overheats when ever on a rough trail..

Here you go.

http://www.snowest.com/forum/showthread.php?t=339282&highlight=trs

RMK 163 · Feb 14, 2016

Thanks

73 Starfire · Feb 14, 2016

Another option on the snowflap is to order the flap from Polaris for the '16 Axys with 3" track. It's solid and about 2.5 - 3 inches longer than the ported flap. Ice Storm scratchers also throw up a lot more snow and seem to direct it better to where it is needed.

richblazer · Feb 17, 2016

What is the $28 fix ??????? any one

BILTIT · Feb 17, 2016

Search it, it's a remote bypass tstat.

Or just go back to post#28.

Sent from my SGH-I337M using Tapatalk

sledfreak89 · Feb 20, 2016

Our Pro RMK-Long snowflaps do help quite a bit with cooling and have been a great hit for the simplest fix for cost to bring temps down.

We now have Blue, and Red snowflaps that should be on the site this week, but we can certainly take orders over the phone in the meantime.

248-676-2556

http://provendesignproducts.com/Pages/Snowflap Logo/snowflap_logo_pro_rmk_long.html

-Matt

Snowmow · Feb 21, 2016

Carl's built my sled boondocker intercooled, race gas gtx2863.

They removed the thermostat, I havnt had any trouble with it being too hot or too cool....

PSI 800 · Feb 25, 2016

Boost it in british Columbia Canada makes a heat exchanger that goes in the bulkhead

429dhm · Feb 27, 2016

https://boostitperformanceproductsl...boost-it-parts/products/prormkauxenginecooler

http://boost-it.ca/installation-guides/boost-it-part-installations/

Tore_TJ · Feb 27, 2016

MTNTK makes a great cooler that fits under the tunnel. Works great. Easy install.
https://www.mtntkperformance.com/engine-performance/polaris-pro-rmk-tunnel-cooler

sledhead9825 · Feb 27, 2016

PSI 800 said:
Boost it in british Columbia Canada makes a heat exchanger that goes in the bulkhead

Boost-it is in Alberta

GreenState · Feb 27, 2016

On my Pro I had the Ski Doo scratchers mounted on the front of the rails and left them down pretty much all the time. When I needed more cooling on the trail I put the stock scratchers down as well. It worked pretty well.

LoudHandle · Feb 27, 2016

BRP Bypass Thermostat Upgrade (pioneered by TRS)

http://www.snowest.com/forum/showthread.php?t=339282&highlight=trs

This is one of many threads about it. Both Rodger's Sports Center and I sell the kits.

Making the Pro run cooler?

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