the only way Id consider it closed that much is with the header and muffler being ceramic coated...it will get plastic melting hot in there with it closed that much I bet..
viento79
Veteran
Come on Yamaha, you guys made an effective tunnel block off kit that included heat reflective inserts for the Phazer. Are we having a hard time figuring something out for the Nytro. Not enough space under there or what????
nytro addict
Expert
Hey SJ - Guess I'll be a tester in the theroy. But you have me thinking. I think maybe some heatshield insulation under the heat sheild for the muffler might help. That will keep it all nice and cool. 
twin whackas
Newbie
I have a tunnel block off plate in my Nytro, but I cut a 4" wide x 6" long square in it right under the exhaust. This allows some air flow and some snow to kick up through it and keep everything cool.
arteeex
TY 4 Stroke Master
I have access to an IR camera. I'll take some photos of my sled running and with the seat off to show the heat signature of the exhaust.
infrared eh? how about brainwave activity of the rider?
arteeex
TY 4 Stroke Master
sj said:
We can do that too. However the likelihood of finding anything is minimal.
nytro addict
Expert
Went out for the first ride of the season and my tunnel closer that I made worked great. I had no problems with it over heating my seat or plastics. And after a 120 miles there was minimal snow build up while my buddy which doen't have a tunnel closer had the normal snow build up. Just had to say it works great.
Easy Rider
Pro
fergdog93
Expert
I don't see why you couldn't make a "c" channel the fits above the tunnel protectors to box in the exhsaust, then just ceramic coat, heat tape, or even both from the headder back to keep the heat in the pipe....like a 2-stroke. this way you would get minamal ice buildup, and not cook your tush, or burn your sled to the ground. Something has to happen, this 100lbs of ice in my tunnel after a day of riding is getting old...real old. And I'm tired of putting the boots to my tunnel, if I wanted to kick my sled I woulda picked up a Polaris! I love my Nytro, but the sled handles s*ittier and s*ittier as the day goes on. I might as well pick up a snowcow and ride doubble, the rear end would not sag as much that way. 
nytro addict
Expert
Should work great for you Easy Rider. I have mine extended alittle farther. You will see pics of mine on page 1. I rode in 40 degree weather and 120 miles yesterday. And had no problems with a cooked tush or mealted plastics. The only pre-caution I took was I high-temp painted under the exhaust sheild. Maybe that helped. When I tested mine before I put it all together the hottest part was down by the header. But I left an opening for that so the heat could go down that way which it seemed it did. 
zeke66
Expert
I was thinking of making something similar to this:
http://www.schmidtbrosmotorsports.com/Y ... r-Kit.html
Seems if your worried about heat build up, only covering the silences about half is the way to go. From what I have read here, you still get a little buildup but nothing at all like stock.
http://www.schmidtbrosmotorsports.com/Y ... r-Kit.html
Seems if your worried about heat build up, only covering the silences about half is the way to go. From what I have read here, you still get a little buildup but nothing at all like stock.
ceramic coat the entire exhaust
nytro addict
Expert
Hey SJ have a ? for you. Did you have a sled start on fire on you? Or are you just big on ceramic coating your exhaust ? I had no problems with my encloser and that was on a warm day. I guess if I went that far with coating the exhaust I'd just wrap the headers. Anyways
nope just think it would lower temps and cause less icing...and of definately lower under seat plastic melting temps..
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