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  1. REV-XP / XM Chassis - Mountain Sleds
    I'm new to sledding and working on these engines so I need some guidance on what my issue is. I have been on 3 trips mountain sledding with this thing and it was starting first pull the first time. It sat outside for like a month after the first trip and since then it has been incredibly hard to...
  2. MXZ / Legend / Summit / Grand Touring / Formula
    Hi All, I have a problem that has me stumped. My brother's 2001 700 is bogging down at WOT. It idles great at about 3000 rpm and starts fine. Has about 150 psi compression on pto side and about 160 psi compression on mag side. I have taken the carbs apart several times and cleaned them...
  3. MXZ / Legend / Summit / Grand Touring / Formula
    Hey guys, Just purchased a dynoport pipe for my 2001 MXZ 700. I was wondering what you guys would recommend to run for jets. Should I leave them stock or change them? Thanks.
  4. MXZ / Legend / Summit / Grand Touring / Formula
    I have a 1999 mxz 600 and just before this season I cleaned the carbs out really good and put them back on. I was not aware until now that carbs are specific to the mag and pto side. I had both carbs off at the same time and have no idea which one goes on which cylinder. The sled has been idling...
  5. REV Chassis - Performance and Trail Models
    Warning: this is going to be a long post. I appreciate any ideas or advice... Last april I picked up a sled that has had the following done to it: 2007 440 chassis that has a 2005 600ho bottom end and 700 cylinders, pistons and rings. The cylinders have been nicasiled and powerseal did some...
  6. MXZ / Legend / Summit / Grand Touring / Formula
    Hello to all, new to the Doo forum. Haven't owned a snowmobile for about 10 years, but with the snow we are getting this winter, I couldn't resist, and bought a 98 Summit 670X with the DPM removed. Has lots of power when you first take off, then bogs down after a while. Seems to be worse in...
  7. MXZ / Legend / Summit / Grand Touring / Formula
    I have a 99 ski doo mxz 600 that had a bad crank seal. the motor ran fine just over heated. so i pulled the motor and bought a 02 ski doo mxz 500 motor from a burnt sled and put that in. It runs but it will only run with the choke on a little. otherwise it dies. so i put different carbs on and...
  8. General Sledding Discussions
    Dealer has no idea... No fellow doo-riders... And I just made the switch over What is a good jetting for a 600 carb for the summer months?? Helped organize a water drag event with the local club, and my sled bogs with the warm weather... Any ideas?! ... or at least a general idea to start...
  9. REV-XP / XM Chassis - Mountain Sleds
    Just wondering if i would have to change the main jets and or needles. I bought this sled out west and am setting the clutches up for sask about 1800 feet. And was wondering if the jets would need to be changed, it has 500 main jets.
  10. General Sledding Discussions
    Okay so I'm not familiar with sleds at all, I recently got 2 sleds, a 1994 arctic cat ext 650, and a 1996 skidoo formula sls 500, which my question is about. Both of the sleds are from Colorado, and I was wondering what jets do I need to make it work here in Minnesota, or where I could order...
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