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i have heard that the mxzx is a little faster does anyone know if this is a fact or an opinion? my brother owns the ski-doo and im buying a zr440 sno pro...i have a feeling its going to be war come this winter to see who can make their sled the fastest just thought id ask because the bragging has already begun
 

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Originally posted by fastcat01@Sep 29 2005, 02:29 PM
i have heard that the mxzx is a little faster does anyone know if this is a fact or an opinion? my brother owns the ski-doo and im buying a zr440 sno pro...i have a feeling  its going to be war come this winter to see who can make their sled the fastest just thought id ask because the bragging has already begun
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You have a Cross-Country sled or a Sno-Cross sled???
 

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My '98 has basically the same motor as your 2001 (you have servo valves, mine are pressure). My 16 y/o can pretty much take any 440-500 cc sled out on the lake in a ~1,000 ft race. Hell, he has even betten up a few older 600's. Mine is failry stock with a little clutch work done. As others have said, it's all in the set-up. It will take some time to get it dialed in the way you want it, so take your time and don't get discouraged if it isn't as fast as you think is shoud be at first. These little 440's pumping out ~100hp are really finicky, you need to have them spot on, or they will run like crap!!
 

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The 440's aren't speed machines. My buddy's 01 440 SP goes about 70 tops with stock gearing.

Same with my other friends 02 MXZx 440.

If you're looking for speed get a consumer ZR.
 

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What an idiot......2000-2001 440's run 100mph all day long. Good ones run 102-103. Those are CC not Snow Cross. Run 110 Octane and run timing at +3 and it will fly. Run 290's down to 10 degree's. Short runs or drags you can run 260-270...that gas lets you get lean. 87 Octane stay at 0,-1 on timing if you are running longer runs. Stock clutching is as good as it gets !~!~!
 

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I know for a fact (radar) that my '98 will do 90 mph top end. And yes, the stock clutching is really good.
 

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My Sno-Cross will do about 85 tops, but it goes 0-60 in about a second and a half. I have it geared for holeshots. I could gear it to do about 105, but I would lose more bottom end then I am willing to sacrifice. I use a BM clutch kit which is way better then stock. Goodwin performance makes one that is also excellent, and better then stock. 290 mains, 0 timing, and 93 octance pump gas with a fitch fuel catalyst. I love the thing, and it really is all in the setup. Good luck!
 

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Originally posted by F7 Racer@Oct 4 2005, 10:36 PM
What an idiot......2000-2001 440's run 100mph all day long. Good ones run 102-103. Those are CC not Snow Cross. Run 110 Octane and run timing at +3 and it will fly. Run 290's down to 10 degree's. Short runs or drags you can run 260-270...that gas lets you get lean. 87 Octane stay at 0,-1 on timing if you are running longer runs. Stock clutching is as good as it gets !~!~!
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Yeah, with a gearing change!!!!!

he's getting the snocross version too!!!!
 

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i will take the sno pro over the ski-doo. my 97' has the nut to do over 100mph. but i have it geared for bottom and mid pull now so i think it only hits around 80 but quicker then sh!t for and older sled :div20:
 

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I have a 2002 that is stock except for larger profile weights, and that is it. It will do 98 mph all day long on icy hardpack (just enough snowdust to keep the slides lubed). This is even with the 1.375 track. No lie either I was side by side with my cousin's ZR 500.

Fast
 
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