FYI 96.8" underdrive belt not the best size - Mustang Evolution

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Old 11-26-2003, 10:28 AM   #1
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FYI 96.8" underdrive belt not the best size

Just wanted to let you guys know about this. I got an underdrive pulley about a year and a half ago, and in that time I've gone through 3 serpantine belts. They go fine for a while, then they start squeeling and eventually die. One shreaded itselfand tore up my fire blanket and battery holder, the other just started falling off. I've fixed this on mine and I figured I'd let everybody know about it. Since the belts stretch a little over time, having a belt where the tensioner is all the way out when it's tight, isn't the greatest way to go about it. Currently I'm running a 95.5" belt and it works great. The tensioner is nice and tight and it won't squeel. I also can't just slip the belt out from under the idler pulley anymore like I could with the longer belt. If anyone else is having this problem, try the smaller belt. It's also cheaper than the 96.8" one. the 95.5 was only $15 as opposed ot the $28 for the bigger one.
Wish i would have though of this $70 ago
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Old 11-26-2003, 10:32 AM   #2
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I'll have to get one... I need a new belt... mine squeaks on startup
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Old 11-26-2003, 10:47 AM   #3
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huh, that's funny, what underdrive setup do you have? i have a 25% underdrive on the crank only and am running a 96.6" with no problems, and have for a couple years.
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Old 11-26-2003, 11:14 AM   #4
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I have a feeling that my belt is just OLD.
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Old 11-26-2003, 03:00 PM   #5
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sorry rellik, i was reffering to horse's belt problems. serpentine belts do need replacing, but your car is what, 5-6 years old? i wouldn't think you'd need one already. when you do buy one, i suggest a Gates brand... it should last forever... and it's warrantied forever i think too. the down side is that mine was 30$ i think.
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Old 11-26-2003, 03:06 PM   #6
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I have an ASP 25% underdrive pulley
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Old 11-26-2003, 03:21 PM   #7
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Thanks for the FYI. ASP's belt guide listed the 96.8" one. I'll have to
start selling 96.5s if this is a common problem although I haven't heard
anyone complain yet...
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Old 11-26-2003, 03:31 PM   #8
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oh, and for the record i have the exact same pulley (25% ASP) and year car as horse's. 96"-96.5" both work fine from what my friends have said as well.
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Old 12-07-2003, 10:39 PM   #9
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i've installed a few 96.8" belts and didn't like how they felt, so I sell 96" belts with my UD pulleys.
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