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M3 Track: Racing and DE Best mod for speed is learning to get the most out of what you currently have. Tracks and DE's is the place to start!

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Old Sat, Jul-21-2012, 12:49:16 PM   #1
jmciver
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Default Question About Serpentine Belt Length Selection

I am going to be changing out my belts soon and was looking to upgrade my belts to better quality/race ones to help minimize belt slippage with my supercharger setup. I am currently considering a Gates Blue Racing Micro-V belt.

I have a VF stage one S/C kit and according to VF, I need a belt that is 2065 mm long. Unfortunately, Gates does not have one at that exact length. So my question is, how much "variability" is there with belt length selection? I know the tensioners can account for some length differences, but how much before a belt gets either too long or too short for the tensioner to be effective? +/- 5mm? +/- 10mm? Something different?

My assumption is it is better to go with a belt that is slightly shorter than longer, but it would be nice to know what an acceptable length range is.
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Discussing Question About Serpentine Belt Length Selection in the M3 Track: Racing and DE Forum - Best mod for speed is learning to get the most out of what you currently have. Tracks and DE's is the place to start! at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)