Join Date: Feb 2006
Location: Saukville Wisconsin
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Sled: 2007 F6 Snow Pro
09-10 Mileage: 500
08-09 Mileage: 2,820
07-08 Mileage: 1,700
06-07 Mileage: 760
Hi guys I have an update to my project for you today. My sled- 6/1992 Arctic Cat 550 Special now with a 580. I blew my 550, so I found a new engine from a 1995 arctic cat ZR 580 with everything on it ( I originally thought it was from a 1994 zr 580 but the red spring and 49.5 Gram weights and the 3 degree carb slides makes it a 95. OK first things first I took it to our local custom shop to complete my engine upgrade which should have only been a carburetor cleaning and to make sure the bog was gone- that turned into cone air filters and 3.5 hours of labor….Cool right well no I got a call saying its taking up to much time and that they couldn’t fix the problem I took it there for-Bogging. Now I have the sled back with these symptoms. Fires right up, idles- if I slowly hit the gas, I can make it to about 20 MPH then she shifts into a like second gear (takes about 300-400 RPM away) and the result is slowness. This thing seems to get WAY TO MUCH GAS-if it’s warm I can’t make it up hills or cross roads when I stop. I have floor the thing to go anywhere and maintaining a steady speed doesn’t work at all I have to floor it to say moving pretty much. OK to RECAP I have a 1992 EXT Special 550 with a 95 ZR 580 motor- I am running stock 550 pipe,( is this bad? If yes then i'm looking for one) I am running stock 550 Fuel Pump-I am running a red spring for primary, and yellow for secondary- The 580 came with huge carbs so that should not be a problem, (I told the repair shop at the time the 580 was from a 94 zr so that’s what parts they put into the carb rebuild). FYI If I floor this thing she FLYS I can pop some nice wheelies until the thing “shifts”.
So my questions are,
1. Why does this sled shift into another “gear” at about 20 MPH
2. Do the carbs need 1995 parts vrs 1994?
3. Would the 550 exhaust make this bogging problem?
4. Has anyone done this conversion before?
THANK YOU ALL SO MUCH FOR YOUR HELP!!! One of my repair shops as you can see wants nothing to do with this!
2007 Arctic Cat F6 Snowpro 3,500 Miles as of (JAN 25 2010)