Pat M
Extreme
- Joined
- Jan 4, 2007
- Messages
- 71
- Age
- 56
- Location
- Pelham, NH Clarksville, NH
- Website
- www.xtreme-av.com
- Country
- USA
- Snowmobile
- 06 Nytro, 07 Phazer FX, 12 SkiDoo MXZ Sport, 14 SkiDoo MXZ
O.k. so I have been watching this thread and never really understood why Yamaha had their Demo sleds with a closed tunnel but when they released them they opened them up. How about if the hole is only closed partially. Meaning that leave maybe just a 2"-3" gap around the edge of the pipe to allow some snow there to cool the pipe a little but close up the rest of it so there isn't that much of an ice buildup. I haven't been able to ride mine other than 5 miles since we don't have any snow here in the East so there isn't any riding to be allowed but wondering how that might work or if any one has tried it? Just throwing out an idea.
Y_Rider
Extreme
Closed the hole completely on my Mtn Lite....Nothing melted yet. 
ecopter
TY 4 Stroke Guru
Superman said:
Superman said:As far as I can see the smart thing to do is bite the bullett for a hundred and twenty bucks and install the Yamaha guards.Superman........I agree completely.
One of the reasons I buy Yamaha sleds is because of their engineering. Clearly, Yamaha has some of the best cutting edge engineers working in their R&D and testing departments. Not to bash anybody on this forum, but I'll put my faith in Yamaha's engineers before I put my faith in an internet chat forum. That said, if Yamaha's engineers put a hole in the tunnel, that's good enough for me - I'm leaving the hole open.
On another point, many folks are complaining about ice build up and blaming it on the hole. Well, I've been sledding for about 15 years now and have owned Polaris, Ski-doo & Yamaha sleds. Every sled I've ever owned has had ice build up in the tunnel - the Phazer is no different. The solution to ice build up is to carry a small rubber hammer in the tool box and while you're taking a break waiting for your Polaris, Doo & Cat buddies to catch up, tap the tunnel with the hammer and all the ice falls off. I'd rather carry a 1/2 pound hammer in my tool box over 30 lbs. of ice in the tunnel.
I do like the Yamaha guards. I don't, however, like the price. Nevertheless, if you want to cover the hole, Yamaha's engineers have come up with a solution that looks
Idaho Nytro
Expert
what is this solution, if you dont mind me asking
teerex
Expert
If the tunnel is closed and cold there will be very little ice buildup. The Phazer tunnell does not have heat exchangers. So get a muffler and cover the hole, or get the MCX turbo 
otis
Expert
Slush Buster
I really want someone to make some air vents on the side plastic surrounding the muffler. Then I would be willing to cover the hole. That should provide enough cooling for the exhaust just like any cycle or ATV.
Anyone who doesn't own or has not put enough miles on their Phazer cannot fully understand what we are talking about.
It just plain sucks! After every ride I have 40 lbs of ice under the tunnel. Most mornings I am just lucky enough to get it off before the next ride.
BTW I did try the Slush Buster stuff and it did not help at all!!!!! Maybe it made it easier to get the ice buildup off the next morning. The ice was just as thick with or without the Slush Buster stuff. Don't waste your money!
Otis
I really want someone to make some air vents on the side plastic surrounding the muffler. Then I would be willing to cover the hole. That should provide enough cooling for the exhaust just like any cycle or ATV.
Anyone who doesn't own or has not put enough miles on their Phazer cannot fully understand what we are talking about.
It just plain sucks! After every ride I have 40 lbs of ice under the tunnel. Most mornings I am just lucky enough to get it off before the next ride.
BTW I did try the Slush Buster stuff and it did not help at all!!!!! Maybe it made it easier to get the ice buildup off the next morning. The ice was just as thick with or without the Slush Buster stuff. Don't waste your money!
Otis
BV1
Expert
The side panels made a huge difference!
No snow build up on the exterior, absolutely 0 or at least less then 5% of previous. My father in laws GSX had much more build up after yesterdays ride them the Phazer.
They do actually work on the xterior of the machine.
-Steve
No snow build up on the exterior, absolutely 0 or at least less then 5% of previous. My father in laws GSX had much more build up after yesterdays ride them the Phazer.
They do actually work on the xterior of the machine.
-Steve
Yellowknife
TY 4 Stroke Master
I've got a set of tunel pannels waiting for me at the dealer, but I want Yamaha to pay for them and their installation.
My ski pants freeze to the sides of the tunnel and it is a safety issue big time. I try to switch running boards or get off the sled and my legs are frozen in place. Not safe. It's a design flaw.
My ski pants freeze to the sides of the tunnel and it is a safety issue big time. I try to switch running boards or get off the sled and my legs are frozen in place. Not safe. It's a design flaw.
gabe7924
Pro
I agree with Otis, the Slushbuster is a waste of money. I think it actually made it worse than without it. Total waste of money. You would be better off using non-stick Pam spray.
DaveRX1
Expert
What is the verdict regarding closing off the rear tunnel hole?? I have 400 miles on my FX and the amount of ice in the tunnel is realy bad! The ice buyilds to a point that the rear suspension can only travel thru 6" instead of 16".
I realy want to close the hole, but I need to know if this will cause the rear trim pieces around the muffler to melt (or the seat).
Please let me know how this has worked out for those of you who have closed the hole.
Thanks
I realy want to close the hole, but I need to know if this will cause the rear trim pieces around the muffler to melt (or the seat).
Please let me know how this has worked out for those of you who have closed the hole.
Thanks
Dieselboy99
Newbie
- Joined
- Jan 1, 2007
- Messages
- 5
Closed tunnel with around 200 km on it, have a "glasspack" exhaust on it and no problems with heat. Hardly any ice on the running boards now.
Total cost $35 bucks.
Total cost $35 bucks.
read somewhere that yamaha said engine damage could occur if we close hole,was gonna close it on mine but decided to wait,imagine trying to get warranty for this if something did happen,on the other hand,there is a bunch of engine safety sensors like oil press,ov heat,cold start and more so it shouldnt blow up,hope they come out with something on this issue
sniperviper
TY 4 Stroke Junkie
I have also read all sorts of reasons to not close the hole. Plastic and seat melt down, damage engine, drop in engine performance and I wonder what the next good reason to not do this mod can be...?
My tunnel is closed and I havent had ANY PROBLEMS WHAT SO EVER after I did this mod.
I have talked to a old engine engineer about this issue and told me that the only reason to cool down exhaust would be to prevent that nothing near it caught fire. I told him what I have read about engine damage and that gave him a good laugh. He ment that somone must have mixed "exhaust gas temprature" with "exhaustpipe temprature" The engine is build to handle the temprature due to normal combustion. If engine runs lean this would cause higher exhaust gas temprature and this can again cause engine melt down. You cant prevent this from happening by cooling the exhaustpipe.
I dont think the temprature on the header close to engine would be higher with tunnel closed than it would be with tunnel open.
My tunnel is closed and I havent had ANY PROBLEMS WHAT SO EVER after I did this mod.
I have talked to a old engine engineer about this issue and told me that the only reason to cool down exhaust would be to prevent that nothing near it caught fire. I told him what I have read about engine damage and that gave him a good laugh. He ment that somone must have mixed "exhaust gas temprature" with "exhaustpipe temprature" The engine is build to handle the temprature due to normal combustion. If engine runs lean this would cause higher exhaust gas temprature and this can again cause engine melt down. You cant prevent this from happening by cooling the exhaustpipe.
I dont think the temprature on the header close to engine would be higher with tunnel closed than it would be with tunnel open.
teerex
Expert
sniper you'll better open that hole before the thing catches fire 
