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Pulley Diamater Sizes? (SC Supercharger Kit Post-Installations)

Why do you need to know the size of the idler pulley on the serp belt? There shouldn't ever be a reason to swap it to a different size. Plus,

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Old 01-24-2018, 02:36 PM   #1 (permalink)
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Why do you need to know the size of the idler pulley on the serp belt? There shouldn't ever be a reason to swap it to a different size. Plus, you might want to invest in a $10 digital caliper from Amazon.
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Old 01-24-2018, 02:41 PM   #2 (permalink)
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Originally Posted by TopgunZ View Post
Why do you need to know the size of the idler pulley on the serp belt? There shouldn't ever be a reason to swap it to a different size. Plus, you might want to invest in a $10 digital caliper from Amazon.
Oh..
I thought I would have to make up for belt slack if I am swapping the 8 psi pulley to a 9 psi pulley size (2.87'').
As in if I am sizing the pulley down some size, wouldn't the belt have extra room again due to downsizing one of the pulleys?
Or do I have this all wrong?

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I think I will buy one haha.
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