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Old 03-24-2012, 05:43 PM
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Metal pulleys vs stock plastic

Made a 500 mile round trip Friday. On the way back with no warning the bearing on the idler arm pulley locked up! By the time I got over to check the damage the entire pulley was gone! Has anyone upgraded to metal pulleys or was this a design for a reason? Thanks for any info.
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Old 03-24-2012, 05:49 PM
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ive had metal ones shatter too, the bearing is gonna give out eventually regardless and thats gonna happen either way
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Old 03-24-2012, 05:55 PM
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So I would assume it would be best if changing one to change them all?!
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Old 03-24-2012, 05:59 PM
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not necessarily, some last some dont, ive blown one at 300k, and one at 50k, always an idler/tensioner pulley tho, once the vacuum pump locked up tho, ate 3 belts
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Old 03-25-2012, 09:24 AM
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I always carry a spare grooved and a spare smooth just in case. Cheers!
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Old 03-25-2012, 06:14 PM
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I learned my lesson!!! Are all the grooved and smooth the same size?
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Old 03-25-2012, 06:57 PM
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Quote:
Originally Posted by Baileysbees View Post
So I would assume it would be best if changing one to change them all?!
Don't have to change them all out. Given you've already got the belt off, give each pulley a spin and replace any that make noise, don't spin free or have play. You can generally hear/feel a bearing failure coming before it leaves you at the side of the road.
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Old 03-25-2012, 07:00 PM
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In all honesty its my opinion that they probably run some plastic ones to help cut down on weight which means less wear on the bearings.
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Old 03-25-2012, 11:20 PM
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Really don't see weight coming into play as far as bearing life when you are adding an external force (belt tension) to the mix...
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Old 03-26-2012, 01:05 AM
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i think the only difference a metal or steel pulley would have is if the bearing goes it would eat the belt off if the bearing didnt let it fly off the knob first, good luck tho, i'd rather let the plastic pulley shatter and hit the bottom of my hood and shatter more, than a steel one fly off and dent my hood up
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