tunnel ice build up and over heating

[Dano]

My question is why do some seem to have a problem and others such as myself have never ever seen so much as a temp light. I have rode this sled in some really warm conditions and low snow and the light is still phantom to me. What could cause such a variation from sled to sled
?

Actually there is more ice build up when it's colder outside. My overheat light often comes on at -20 and colder due to a big block of ice blocking exchanger.

Dan

 

[09nytro]

Most of them have the trail tank on and the rad. is close to the tank and the air doesn't flow through the rad like it should ..
I have never had any problems at all.....I know at one time with the trail tank you had to shim the rad out because the fan would hit the tank...

 

[LM7800]

I to only have temp issues in cold good conditions do to ice build up and bridging over the heat exchanger. never in warm crap snow. I know it's not a mechanical issue or coolant needing changed because I have TWO XTX and they both acted the same way this week. both iced up and temps lights were on. I like the looks of the rear heat exchanger, it looks like the rear one off a new apex. I was planning on retro fitting an apex one on the nytro, now maybe i'll go that route

 

[LSXM3]

My question is why do some seem to have a problem and others such as myself have never ever seen so much as a temp light. I have rode this sled in some really warm conditions and low snow and the light is still phantom to me. What could cause such a variation from sled to sled
?

 

[LM7800]

My question is why do some seem to have a problem and others such as myself have never ever seen so much as a temp light. I have rode this sled in some really warm conditions and low snow and the light is still phantom to me. What could cause such a variation from sled to sled
?

IMO when it's warmer or marginal snow you will not have a prob. over heating (I don't). I only do when it's super cold and a ton of fresh snow. I belive the front heat exchanger after ridden and left out over night than the front exchanger bridges over with ice and fresh snow can't hit it. so you need to chip ice out. Also I believe in heavy powder, snow collects under the muffler and makes a huge block of ice all the way down to the track, not letting as much snow revolve around to get to the front exchanger. I have TWO XTX's and both acted the same this week While I was in the U.P. ridding!

 

[Dano]

My question is why do some seem to have a problem and others such as myself have never ever seen so much as a temp light. I have rode this sled in some really warm conditions and low snow and the light is still phantom to me. What could cause such a variation from sled to sled
?

IMO when it's warmer or marginal snow you will not have a prob. over heating (I don't). I only do when it's super cold and a ton of fresh snow. I belive the front heat exchanger after ridden and left out over night than the front exchanger bridges over with ice and fresh snow can't hit it. so you need to chip ice out. Also I believe in heavy powder, snow collects under the muffler and makes a huge block of ice all the way down to the track, not letting as much snow revolve around to get to the front exchanger. I have TWO XTX's and both acted the same this week While I was in the U.P. ridding!

Do both your Nytro's have the trail tank or just the one? I too have the trail tank and maybe the front rad can't compensate for cooling as 09nytro said? Regardless, ice is a big problem when it's cold for sure.

Dan

 

[grizztracks]

If you have a trail tank then shim the radiator forward with a couple washers and cut a few vent holes in the instrument panel to improve air flow.

Check out Mountaintech Industries

 

[Grimm]

My question is why do some seem to have a problem and others such as myself have never ever seen so much as a temp light. I have rode this sled in some really warm conditions and low snow and the light is still phantom to me. What could cause such a variation from sled to sled?

It's not the variation between sleds...it's riding when it's really cold out.

You'd think that the function of the radiator would compensate and cool better due to chilly temps, but I think people are really starting to see that the design/layout of the radiator is poor at best. There is little air able to blow into the rad and even less getting through and out the back. You want proof? The next time you're overheating...take the hood off your sled and ride...I bet that the sled won't overheat.

 

[LM7800]

yes both do have trail tranks. Still IMO poor design from yamaha, the sled should have more exchangers like the apex (Under the running boards) so they don't ice up as well

 

[LM7800]

If you have a trail tank then shim the radiator forward with a couple washers and cut a few vent holes in the instrument panel to improve air flow.

Check out Mountaintech Industries

Grizz, my only concern with that is it seems like a small bandaid to a big issue. You added the mtx exchanger, do you think you could have just shimmed and vented and got away with it without the exchanger?? For the time and money I think I'd rather go with an extra exchanger, MTX or after market....not sure thoughts please

 

[sgilbert]

I would like running board exchangers, for foot heat and option of tossing ice on boards for someone like my old lady when she is slow. my guess is they dont do half as much to cool the motor as in tunnel though. I've never seen my light before, but would like the idea of something right under my feet, which would add a little capacity as well. poor mans temp guage. always thought it should go into the handle bars as well.

 

[Tyloooor]

i had an overheating issue last weekend....so last night I install a tunnel heat exchanger from yamaha....it was super easy....the stupid thing is... yamaha has all the rivet holes and holes cut in the tunnel to run the tubing for the heat exchangers already from factory....i don't understand why the sled didn't come with one.....i hope this solves my issue.... kind of a piss off that a four stroke snowmobile would over heat in -20 weather....i know my old SRX i could ride in any temp and wouldn't have an issue.....i will be given it a good test ride this weekend.....

 

[Grimm]

Yamaha have the tunnel exchangers installed on the MTX sleds (2013 XTX 1.75 too), whereby the sleds that need it the most, "trail riders", don't have it installed. Don't understand it.

 

[Tyloooor]

Ya so stupid....but it was pretty easy job and I don't see that light again....

 

[grizztracks]

Lm7800, I would start with the MTX exchanger. Shiming the radiator is more for clearance between the fan and trail tank. Adding an IP vent helps remove engine compartment heat at low speeds and when idling.