NEED HELP WITH SLUSH/HEATING ISSUE

[PEIYAMAHA]

I know this issue has been covered many times! but wanted some input.
This is my fourth winter with the xtx. I drove it in every different condition imaginable the last three years and I have had lots of ice, but never once seen the temp light come on.
This year I installed an mbrp trail can which is the only mod I have done.
Went to NB this weekend to enjoy some white gold and had some issues yesterday with the temp light coming on.
Saturday's temps were -16c basically all day with lots of dust, but no fresh snow on the trails.
Drove 350km hard all day and had the regular amount of hard ice that I'm used to. Just bang it off throughout the day. No issues with heating
Yesterday we left the hotel, (Sleds were in a heated garage so everything was melted off, same as always) with a similar temp of -14c which warmed up to -11c by the time we got back. the difference was an inch of so of light snow that fell overnight.
After about an hr of driving my temp light came on. Wtf
After checking and seeing everything was normal, I noticed slushy snow had bridged between the track, and heat exchanger. I dug it out with a stick, and the light went out and I continued on.
After another 30-40 min the same thing happened again.
I noticed that there was a ton of ice buildup under the sled like normal, but it was more wet and slushy and concentrated a lot more towards the center and farther forward then I'm used to seeing.
Water was actually dripping off it.
By the time we got back, 160km, my light had come on 6 times in which I had to dig out in front of the heat exchanger every time. From what I can tell the slush was dropping off the exhaust and piling up at the front instead of spitting right out through.
I can't imagine this was all caused by the smaller exhaust can, as opposed to the stock muffler, and why I had no issues the previous day?
I hate to take it off, as I like the sound of it, but I can't be stoping every 10 miles to dig out the rad.
I'm thinking of installing Grizztracks idea of a blockoff plate. What are people's thoughts, will this solve or at least improve my slushing/heating issue?
Thanks

 

[devilnabludress]

I installed an aluminum plate on top of my stud protectors, and used header wrap on my muffler. Then sprayed the entire inside of the tunnel with graphite spray and basically have zero snow build up anymore. I also installed a manual switch for the fan so I can manually control it rather than waiting for the temp to reach a set point before the fan turns on itself. (monitor by a digital temp gauge).

 

[Sevey]

I have seen xtx's with so much ice in the back there was just enough room for the track to pass through.
I am a big advocate of a block off plate. Since I put a fabricated aluminum plate on the tunnel protectors in my short nytro it makes the back end behave way more consistent. I never have any major build up. If snow does accumulate it falls off. The quality of the snow being sucked up by the track is way better for cooling since it doesn't hit the hot exhaust right away melt.

Just a question, I just had my exhaust fail recently- there was a crack in the pipe. The first indicator was way too much ice in the tunnel due to the heat escaping. Is there a chance something is cracked or not tight allowing hot exhaust gas to escape in the tunnel? Nytro's are not known to create ice bridges ahead of the heat exchangers and starve them for cooling. Phazers have this problem.

Let us know.
MS

 

[PEIYAMAHA]

Checked the complete exhaust and everything is tight.
I'm thinking of installing a block off plate to fit between the protectors 36" long and see if that helps.?


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[Sevey]

Canoehead designed a really well laid out plate with edges bent up - I copied his design and it works well. The length would have to be adjusted for your xtx. I am sure it will make a huge difference.
I joke and tell others the trail tank was the best upgrade for this sled, and the block off plate is not far behind.
MS

 

[stricklandj]

I had the same issues a couple of years ago riding in the area. Get a block off plate

 

[PEIYAMAHA]

Just finished installing it. Now all I need is snow. [emoji22]
I had to put a small indent in it so not to hit the MBRP. Hope this helps

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[stricklandj]

That will do the trick, but doesn't look good for getting any snow soon

 

[Sevey]

I Just made the discovery that to do any exhaust work with a block off plate installed is near impossible.

A week ago my collector cracked and had to be taken out. I just barely got the old one out but was impossible to get the new one in. I had to drop the rear skid and cut the rivets out to remove the plate. Didn't see that one coming.

If i were to go back in time I would have used a shorter plate and some type of self tapping fastener. Not rivets.

For what it's worth........

Ms

 

[PEIYAMAHA]

Well the block off plate seemed to work.
Was in NB this weekend and put close to 300km on the sled Saturday doubling in -2deg weather without an issue. Still have some ice forming on the sides of the tunnel but nowhere near what it used to be. And when I would check through the day the block off plate stayed clear. The slush and ice that normally formed in the center off the muffler and travels around blocking off the rad wasn't an issue.
Side and rear plastics didn't seem to warm up any more then normal.


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[Sevey]

Nice, my aluminum plate worked well and made the back end behave way better without gobbs of ice.
Just watch that plate if you have to do exhaust work and pull the pipe out, the block off plate will have to be removed.
MS