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Home Forum Polaris
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When do you trust a rebuild?
started by Berserker
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January 25th 2008 at 9:31 AM
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Berserker
DILLIGAF
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337 Posts 
Group: Members
Member Since: February 10th 2003
Location: Yooper in WI, USA
Current Sled: 2000 Triumph
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So when do you guys feel good about rebuild? How many miles? I put new outer bearings on crank, seals, gaskets and rings.
Curious how many miles you have had a bad build go, before it blew up? This my 1st 2 stroke build by myself. Did one 4 stroke bike, which now has 20k miles. But was nervous for awhile.
Put oil in tank, and I am taking it easy. Should I retorque the head bolts?
2000 Triumph 4800 miles.
Engine was fine,was the water pump.
http://www.snowmobilefanatics.com/forum/topic/66247/display.aspx
Devil made me do it the first time, second time I done it my own-Waylon
Women and Snowmobiles are Evil-Me
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Site Supporter
Group: Site Supporters
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January 25th 2008 at 11:53 AM
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Indy_500_Classic
Young Ripper
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279 Posts
Group: Members
Member Since: October 21st 2007
Location: Barrie, ON, Canada
Current Sled: '91 Indy 500 Classic
Miles Last Season: 497.3
Miles This Season: 0.0
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After running the sled for a little while, idle only, short bursts of no more than 1/4 throttle, I re-checked the bolts on the head to ensure they were snug. They had been torqued, but I at least checked to ensure they weren't loose. I had buddy of mine, another member on here, rebuild the engine. He's done a few, so I trust his capability. Pre-mixed the gas w/ oil for the first half tank, and I've got almost 200 miles, and no issues. Engine pulls strong, idles with no issues, and no bogging or knocking, using premium fuel.
Good luck!
1991 Polaris Indy 500 Classic
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January 25th 2008 at 5:28 PM
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Berserker
DILLIGAF
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337 Posts
Group: Members
Member Since: February 10th 2003
Location: Yooper in WI, USA
Current Sled: 2000 Triumph
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Sucks at first you don't know if yuo can trust it. Just curious how many miles people have had on bad rebuilds when they blew. I know of course, there is no straight answer.
Devil made me do it the first time, second time I done it my own-Waylon
Women and Snowmobiles are Evil-Me
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January 25th 2008 at 5:42 PM
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I personally would have put all new crank bearing on it. also would have had a pro feel the rods to check the big bearings on the rods.
as long as you run good oil and premium gas you can expect fine results until something breaks. meaning with a 2 stroke, it will show up real fast if you did anything wrong,
nothing goes like 3 holes!!
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January 25th 2008 at 6:07 PM
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Berserker
DILLIGAF
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337 Posts
Group: Members
Member Since: February 10th 2003
Location: Yooper in WI, USA
Current Sled: 2000 Triumph
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I had pro look at the crank, he said it was fine. I tore down a perfectly good motor. Was the water pump making noise.
I replacd the 3 outer bearings, since I had it apart, plus seals and rings.
Devil made me do it the first time, second time I done it my own-Waylon
Women and Snowmobiles are Evil-Me
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January 25th 2008 at 6:41 PM
[ Modified January 25th 2008 at 6:42 PM
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AKnarrowback
Smile! God loves you!
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611 Posts 
Group: Members
Member Since: October 1st 2006
Location: Fairbanks, Alaska, USA
Current Sled: 96 xlt rmk/sks
Miles Last Season: 75
Miles This Season: 3
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Give it twenty miles on a good rebuild, things should show by then. If you cut any corners then anything goes, I'd never trust it.
96 xlt sks/rmk. custom 5.5 inch riser on the bars, custom air intake, custom front shock mounts, custom oil feed channel in block to inner pto end bearing, primer (I hate chokes), custom = I made it myself
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January 25th 2008 at 7:00 PM
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