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09/09/10 at 9:22am

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SledMaine Discussion Forum › Snowmobiles › Arctic Cat Discussion Board
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2001 Zr 800 (Read 1010 times)

Niko1975 Little Putt Putt Love the cold Posts: 31 Gender:	2001 Zr 800 01/11/10 at 5:47pm Got the sled in november runs the nuts thanks for the help with the stickers and shock info.. already got 200 miles on it..... What octane should I run or does it not matter I run 94 in my Bike and Atv...It says it's bored 10 over (scratched on the head) What would that make the displacement?
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Re: 2001 Zr 800
Reply #1 - 01/12/10 at 11:26am

Sounds like someone may have bored it out, meaning more displacement Huh

Huh

Scratching it on the head is what some shops will do. Generally you are fine with 87 octane but it doesn't sound like you know what motor work/mods have been done to it??? Kind of hard to answer your question. You could run premium to be safe, but it may not require it.
In 2001, the electronics didn't have the capabilities to gain performance based on the octane of the fuel. So if it runs ok on 87, I'd probably run 87.

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jsa3107 Mogul Monster F-6LXR/F8LXR /Rage / Venture Posts: 350 Gender:	Re: 2001 Zr 800 Reply #2 - 01/12/10 at 3:40pm I think I would run 89 to start with and see what happens from there It may cost a little more at the pump but a hurt motor will ruin your day...
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Niko1975 Little Putt Putt Love the cold Posts: 31 Gender:	Re: 2001 Zr 800 Reply #3 - 01/12/10 at 3:47pm looks like a stock pipe and can..... it has v force reeds
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Re: 2001 Zr 800
Reply #4 - 01/12/10 at 7:08pm

Ok, more info is good! Still not sure of the motor work though. Depending on what was done, it could be running at higher compression which would warrant a higher octane fuel. Running premium would be the safe bet........but again may not be necessary. Take jsa's advice and settle on running mid-grade. If mid-grade isn't available run premium to be on the safe side.

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Niko1975 Little Putt Putt Love the cold Posts: 31 Gender:	Re: 2001 Zr 800 Reply #5 - 01/12/10 at 10:18pm I have 160 compression sled seem more peppy them my friends 03 zr 800 with 2000 on it . but my track is newer and bigger lugs
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RacingZR Trail Boss NIGHTFIRE- Can't catch what you can't see Posts: 7049 Gender:	Re: 2001 Zr 800 Reply #6 - 01/13/10 at 7:33am 160 Ya, that's pretty high. Not sure what the stock 800's were. I was thinking 130ish was average. Run super!
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belt-stretcha Mogul Monster 08/09 MILES=750 Posts: 326 Gender:	Re: 2001 Zr 800 Reply #7 - 01/14/10 at 3:26pm 150 psi to 155 psi is normal for a 800 and up cc engine
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Niko1975 Little Putt Putt Love the cold Posts: 31 Gender:	Re: 2001 Zr 800 Reply #8 - 01/14/10 at 6:47pm Would that leave me to beleave there is a problem.... I test another 01 zr 800 the other day and it was 155 but not bored 10 over....i'll run high test just to be on the safe side... on the same topic every once and awile it backfires on start up
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RacingZR Trail Boss NIGHTFIRE- Can't catch what you can't see Posts: 7049 Gender:	Re: 2001 Zr 800 Reply #9 - 01/15/10 at 7:04am Doesn't sound like the compression is too bad. Listen to belt-stretcha, he works on Cat sleds. Sounds normal....... For backfire- Let it idle for a good 15-20 seconds before shutting it down.
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Niko1975 Little Putt Putt Love the cold Posts: 31 Gender:	Re: 2001 Zr 800 Reply #10 - 01/18/10 at 8:55pm Put another 75 on it this weekend....No backfire thanks for the tips......trails were like mashed potatoes but snowcovered in most spots...Can't wait for this weekend...Thanks for all your help
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