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ZR600EFI Slow?

2.4K views 20 replies 14 participants last post by  BLinindoll  
#1 ·
I think that I've got to the bottom of one buddy's clutch problems, now I have another Arctic Cat question. Another buddy has a 600 efi that I would pull a half of a sled length in a quarter/half mile with an '03 xcsp500. Both sleds were bone stock and he weighs about 25-30 lbs more. Any thoughts or is this common? I know Arctic Cats go really well stock...
I don't think he's ever replaced the clutch springs. Probably some of the problem.
 
#13 ·
I'm running stock pipe with a black magic hot rod chip and black magic clutch setup. I don't exactly know the spec on the clutch cause i bought the sled with it.

Also, I wanted to mention... I just took my sled out for the first time this year in my yard, after getting it back together. This year my biggest mod was going 1 tooth down on the top gear. All I can say is OMFG. Talk about arm stretching torque, combined with eveything else I have. It's the best $30 i've ever spent.
 
#16 ·
Originally posted by edsled@Dec 13 2005, 01:31 PM
BLinindoll and arcticranger,

are you guys running the stock pipe and chip?

if so, what clutch set up are you running?  i am still trying different things trying to get it dialled in just right.
thanks

ed
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My 2000 ZR600 EFI would run with/beat the newer 600 XC's with 96 pics, redline oil, powder coated stock exhaust, and clutch work with about 5k miles on the engine. 53 grams weights, orange white primary, stock yellow secondary and 56-44 helix (might be a little to aggressive for the 98-99's). Last one I raced after the 3rd time losing he loaded up and went home.
 
#17 ·
Originally posted by D&D800@Dec 13 2005, 09:12 PM
My 2000 ZR600 EFI would run with/beat the newer 600 XC's with 96 pics, redline oil, powder coated stock exhaust, and clutch work with about 5k miles on the engine. 53 grams weights, orange white primary, stock yellow secondary and 56-44 helix (might be a little to aggressive for the 98-99's). Last one I raced after the 3rd time losing he loaded up and went home.
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what part of your helix would be too aggressive, start or finish angle?
what rpms does your sled engage and peak at?
 
#18 ·
Originally posted by BLinindoll@Dec 13 2005, 01:38 PM
I'm running stock pipe with a black magic hot rod chip and black magic clutch setup. I don't exactly know the spec on the clutch cause i bought the sled with it.

Also, I wanted to mention... I just took my sled out for the first time this year in my yard, after getting it back together. This year my biggest mod was going 1 tooth down on the top gear. All I can say is OMFG. Talk about arm stretching torque, combined with eveything else I have. It's the best $30 i've ever spent.
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BLinindoll - Did you notice much difference with the Hot Rod Chip?
 
#19 ·
i have a 2003 zl 600 efi and it moves but it doesn't have a good take off because it boggs down and eventually stals if i hold the gas. it doesn't do it all of the time but when it does it sucks
 
#20 ·
Originally posted by ZL rider@Dec 16 2005, 05:57 PM
i have a 2003 zl 600 efi and it moves but it doesn't have a good take off because it boggs down and eventually stals if i hold the gas.  it doesn't do it all of the time but when it does it sucks
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you need to do some work on your sled if it will die. something is not right. I have a no apv sled and it will run with any of the 600's out of the hole and stay with them till the top end. You might want to make sure your valves are clean and adjusted properly, and the belt defelction is set proper.
 
#21 ·
Originally posted by mod600@Dec 16 2005, 03:04 PM
BLinindoll - Did you notice much difference with the Hot Rod Chip?
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The chip was also in the seld when I bought it. I never had the stock chip in it so I don't know. I would have to assume yes, considering it leaned it out enough to stop fouling plugs.