Peak track, makes the sled hotter?

[Sunvang]

Yes, another Pro Ride cooling problem thread.


Installed a Peak track on my turboed 2013 Assault this summer. And after some rides now, the sled is way hotter than before.
Both trips i have been running in about 1 foot of fresh/heavy snow, with hard under, and cant keep the temperature below 175f. Before track switch it was holding no more than 140f in the same conditions. This is trail riding.

When im riding more aggressively, in deeper snow, it goes to around 145-150f, but nothing less.

I also did a rebuild this summer, and changed all gaskets and coolant on the sled. Replaced the original cooling, with Evans water less power sports coolant.

Also tought it might could be the thermostat that was faulty, so removed that and drove without it, but no difference.

I can see the snow gets thrown alot more out, and under the snow flap, than the stock Competition track, and I even have the extra long Proven Design snow flap.
The tunnel exchangers get's extremely hot, and when I stop and look, there is some snow collecting between the exchangers.

Isnt the Peak track throwing enough snow up in the tunnel, or is there something else thats causing this?

 

[turbonium]

Peak track

I have ran a peak track on my sled for two years. I have two sleds and the other has the stock 5.1 track. I consistently run around 127 on both sleds. Which turbo do you have? If you are cooling your turbo with your coolant that will cause your temps to rise. It should be about the same for either track though.

 

[john heston]

Peak track

Tried peak track in 2012 pro boondocker turbo and it also ran hot. Switched back to stock track because of trenching and heat issue. Stock ran much cooler

 

[newtrout]

In my opinion, that's too much of a difference to blame on the track. Especially if its that bad in deeper snow. I would consider other explanations.... Probably not a coincidence that you did a rebuild and changed coolant at the same time.

 

[just-pinch-it]

Check coolant bottle cap...holding pressure?????

 

[Sunvang]

I have ran a peak track on my sled for two years. I have two sleds and the other has the stock 5.1 track. I consistently run around 127 on both sleds. Which turbo do you have? If you are cooling your turbo with your coolant that will cause your temps to rise. It should be about the same for either track though.

2013 Boondocker turbo kit, turbo is water cooled.

Tried peak track in 2012 pro boondocker turbo and it also ran hot. Switched back to stock track because of trenching and heat issue. Stock ran much cooler

Hmmm. Hope I won't need to change the track again. Really like this track alot!

In my opinion, that's too much of a difference to blame on the track. Especially if its that bad in deeper snow. I would consider other explanations.... Probably not a coincidence that you did a rebuild and changed coolant at the same time.

I was just inspecting my pistons and cylinders, no brakedowns or anything. Rebuilt it with the same pistons, but new gaskets and o-rings.

After the rebuild, I filled it up with new Polaris coolant, but noticed the high temperature, so drained it, and changed it to Evans. But didnt help.

Check coolant bottle cap...holding pressure?????

Will try another bottle cap. But the Evans shouldnt build pressure like water mixed coolant?

 

[2XM3]

are you 100% sure you got all the air out of the system?? I life front of sled by bumper about 4 feet and run it up to temp so thermostat opens, then open bleed screw, repeat a few times until zero air exits.


when I ran some tracks I needed to change the pro snowflap to a solid longer one to get it to cool

 

[TRS]

Pull the Evans out of your sled, it will not work in the Pro motor. I posted this problem last year in the $28 upgrade thread. Had many a conversation with Evans. The pump air entrains the coolant. It is worse with the thermostat removed.

 

[Sunvang]

are you 100% sure you got all the air out of the system?? I life front of sled by bumper about 4 feet and run it up to temp so thermostat opens, then open bleed screw, repeat a few times until zero air exits.


when I ran some tracks I needed to change the pro snowflap to a solid longer one to get it to cool

99% sure it's bleeded properly. Lifted it up in the front, heated it, bleed the valve on the housing, filled again, and repeated this a couple times.

I got a longer, solid snow flap from Proven Designs.

Pull the Evans out of your sled, it will not work in the Pro motor. I posted this problem last year in the $28 upgrade thread. Had many a conversation with Evans. The pump air entrains the coolant. It is worse with the thermostat removed.

Seriously? Well that was $200 right in the toilet.

Will change the coolant tomorrow, and mount the thermostat again.

Thanks.

 

[TRS]

When bleeding the system, roll your sled on its side a few times. This will help purge the air. The $28 makes this easier.

Stock head??
Boost and fuel??

 

[Sunvang]

When bleeding the system, roll your sled on its side a few times. This will help purge the air. The $28 makes this easier.

Stock head??
Boost and fuel??

Will try that tomorrow as well.

RkTek head, 9.2psi, 75% 91 and 25% 100LL.



But setup is exactly the same as before, only different track.

 

[800dragon_rmk]

I have ran a 163 peak on my 155 tunnel with a vanamberg extension and with the scratchers down on the trail im 123-127 all day long. Hm turbo'd

 

[Sunvang]

Should mention I don't have any scratchers.

Will mount new ones today.

 

[Sunvang]

Drained the Evans today, replaced with new Polaris antifreeze, new thermostat and new expansion bottle cap. Played in 2-3 feet of fresh snow for 30min, temperature maxed at 132f. Will need to wait until I ride trails, to see if it holds the temperature.
Sled had a max temperature of 157f when playing in fresh snow before, so looks like it was a mayor improvement. Don't know what exactly to blane it on, but im guessing the Evans coolant got the most of the blame.

 

[2XM3]

I have found it near impossible not to run scratchers on any trail with my pros, friend forgot to put his down the other day, wham 185 deg while the rest of us at 125-130.

 

[Sunvang]

Mounted new scratchers today also.

But the trails I rode was untouched, with almost 1foot of fresh snow. Last season, when riding in same conditions without scratchers, the sled was holding way lower temperature than with the Evans. Still remains to see if the problem is solved.

 

[2XM3]

ah, yeah interesting to see if that cured it.....

 

[Sunvang]

Will update when I try it.

 

[Sunvang]

So. Ive been to the mountains a couple days now, and I tought my problem was fixed, but they somehow got much worse the last ride.

Here's what I did before the trip:
-Drained the Evans, replaced with Polaris Antifreeze
-Changed to a thermostat from a different sled
-Mounted new scratchers

In the begining i was holding good temperature on the trails, and playing in 2" feet of fresh. I was maxing at 133f in the fresh, and 150-160f on the trails.

After a while it started to act up in a strange way, when going slow with the sled, like under 6000rpm, the degrees was holding at a low tenperature. Whenever going over 6000rpmcor at WOT, the degrees would rise very quickly, and after some pulls it could even get from 140f to 215f in just under 10seconds! But when releasing the throttle and riding slow again, it quickly went down again, and settled to around 140-150f. This made the sled pretty much useless to ride, and had to really concentrate while riding it home, and not do to many long pulls.

The sled didnt tough flash any engine overheat lights, or warnings, neither did i notice any performance issues during the temperature spikes. But i looked att te coolant bottle, and the coolant had expanded to the top.

Could this be the impeller in the pump, or is the thermostat i got bad also?

 

[Daltech]

You might have a compression leak under boost.