Subject	ASP/Unortho. UD Pulley cont. Causes Belt slip w altern. load
Posted by	Quick_Z on February 15, 2010 at 4:07 PM
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Message	The aluminum underdrive pulleys' smaller size and smaller curvature causes a very small surface of the pulley to touch the alternator/water pump belt, due to the extra water pump pulley not allowing the belt to go "undisturbed" all the way around the crank pulley like the other 2 belts. I keep changing this belt every few months, and then it starts "chirping" again when there is load put on the alternator (lights, brake light, etc, the alternator is rebuilt, nothing wrong with it), then after a few months the "chirp" or squeak turns into full belt slip if it is wet outside or the car is cold. Tightening the belt only helps for a while, then the same thing again. If I spray just a little anti-slip belt compound on the aluminum crank pulley, this goes away. I'm 99% certain this is caused by the smaller size of the crank pulley and the smoother, lower-friction aluminum surface. This never happened with the stock pulley. I'm not saying I don't like this pulley, but I'd like to get rid of this problem and still keep the low weight crank pulley. Has anyone found any solution to this? Do others have this problem too? Thanks
Follow Ups	ASP/Unortho. UD Pulley cont. Causes Belt slip w altern. load - Quick_Z 16:07:51 02/15/10 mines fine. - blacksc 16:15:49 02/15/10 How tight is tight? - Zjustignoreme 16:20:56 02/15/10 What brand belts? (n/m) - Bernie (NoVA) 16:21:09 02/15/10 It was the most expensive and softest belt at - Quick_Z 16:30:50 02/15/10 I always use Nissan belts. (n/m) - Bernie (NoVA) 16:42:26 02/15/10 This is a common problem. I had it when I first installed - zellamay 17:09:14 02/15/10 I just installed an Unorthodox under drive pulley and over.. - Ziceman(East TN) 18:40:33 02/15/10 I had the same problem... - grandchawhee (OH) 22:06:57 02/15/10
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