Wyoming Trip??

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NytroFIB

New member
I'm looking to bring my 08 FX Nytro RTX to Wyoming to ride the groomed trials out there...not to ride off trail. My local dealer is saying I need modifications to the clutch and chain box at a cost of almost $800! That included labor to install and remove when I am back in the midwest.

Question:

-Do I need to really do this? I have others telling me no, that I will just lose some HP...
 
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mikes99ss

Well-known member
I would recommend doing the clutching. The power you will lose without at least that is a ton. Just buy a clutch puller and do it yourself. It's really not that hard.
 
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apexltxgt

New member
We went to Togwotee last March with an 08 Apex LTX GT and a 09 XTX and did nothing to them and they ran perfect. Even took them off trail (meadows) without a problem.
 
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NytroFIB

New member
Could you explain a bit further about the clutch puller? Would I need to remove when I am back in the midwest? Thanks...
 
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NytroFIB

New member
There will also be a Ski Doo 600MXZ SDI and 500MXZ SS going on this trip...anyone out there that can let me know if we need to change anything (except for carb re-jetting)? Thanks...
 
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mikes99ss

Well-known member
an sdi I a fuel injected sled....no need for anything as far as rejeting. The 500 ss should be DPM which should compensate for the high altitude. so neither sled should need any carb work. Changing weights on ski doo clutches is REALLY easy. Where do ya live, i think you might even get one of us to show ya
 
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special_k

New member
I've gone out west stock, and also after making changes. You can get by with either. You will definitely get more response if you make the clutching changes, but if you're mostly going to ride trails, should be fine. You'll notice less HP, will take a bit to get up to speed, but should be ok.
 
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yamahauler

Active member
A clutch puller is used to remove a clutch. Kind of looks like a long bolt (but is not). It is threaded near the nut and once you remove the clutch bolt, you thread it in and the more you thread, it pushes the clutch of the taper on the shaft it is on.

Yes, you would want to change your clutches back when get back.

I wouldn't change a thing. Look up a few snowmobile places out there. Call them up, ask for a quote and ask if you would be able to call them and have them do it within a day for no extra charge. Bring sled out, ride it, if you don't like, call them up and take it there. While they fix it that day, go ride off trail and pick it up the next day. Maybe ask them if they would be willing to switch it back when they are done for a deal.
 
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NytroFIB

New member
I really appreciate everyone's oppinion...thanks!

Yamahauler, that is what we are thinking...bring them out and we are not happy or have issues, look to adjust or rent. We will for sure have a backup plan regardless...
 
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apexltxgt

New member
I had a local dealer tell me the same thing and quoted me about the same cost. I then called a couple Yamaha service centers out there for their advice and they told me there is no need to change anything. As long as you do not plan on high marking, you will be fine. They were correct!
 
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tkuss

New member
The idea of changing your clutches and the stuff in your chain box or chain case is so that your snowmobile runs at the same rpm out west at high elevation as it does here at low elevation.

If you take your sled out the way it is now, you will only be able to hit like 7 thousand rpm or so when it should be hitting 9 thousand rpm.

There is nothing wrong with not doing anything to your snowmobile before you head out there, it will just be much slower since you are not adjusting for the huge power loss you will see at high elevation.

If you adjust your gearing and clutching to the altitude you are at your sled will perform close to like it does here in the midwest. So if you don't care about performance while you are out there, I would just leave the sled the way it is now, your sled will still function. If you make the changes however, your sled will perform much better. Go to ty4stroke.com if you want to figure out how to cheaply setup your sled for outwest. Most people just drill out the rivets in the stock clutch weights and that makes a huge difference. No gearing changes needed.
 
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NytroFIB

New member
tkuss - thanks for the detailed insight! We are looking just to take in all the sights! We are renting mountain sleds and a guide for a day during this trip to calm our need for speed and action!
 
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thebreeze

Member
In your case, I would only change the primary weights to the appropriate weight if you are just going to ride trails. Dont bother with spring, helix and gearing changes. It may not be the optimum set up, but should at least pull close to the proper RPM's. If you change nothing, your sleds performance will not be very good. Even with proper clutching, you will be amazed at the power difference when you are hitting 9000-10500 ft.
 
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mikes99ss

Well-known member
here is a question for your skidoo buddy's. Do they know what the clutch clickers are and how they work? They can be a life saver out there and they are already on the sled from the factory.
 
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NytroFIB

New member
We are going to Dubois, WY...lots of groomed trails and going to spend a day on Ski Doo 800 Mountain sleds - should be a blast!

I will ask them about the clutch clickers...my guess is no and they will want to know about those...thanks

I am hoping the 4-strokes adjust automatically...don't see why they would not.
 
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