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  #1 (permalink)  
Old 07-15-2017, 01:48 PM
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Default Alternator Belt

I'm trying to make a custom alternator mount. Like everything on this build, it'd a PITA.

There's really no room anywhere for the stock Coyote alternator. So I'm mounting a mini 80A racing alternator where the AC compressor used to be. It's a tight fit, but I think it will work.

The alternator has a V belt pulley. The Coyote, of course, does not. Can I put a standard V belt over the Coyote serpentine pulley?

I'm thinking the answer is NO, it will allow the belt to walk, and throw the belt off the alternator pulley.

Second question is, where can I find serpentine belts listed by lengths? I only need a 32" belt. Something close to a stock AC belt would be about right.
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Old 07-15-2017, 02:11 PM
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You can probably find a grooved pulley to fit your alternator. Measure your shaft size and search on Jegs or Summit.
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Old 07-15-2017, 02:20 PM
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This is a list of Gates 6 rib serpentine belts.
http://www.gates.com/oreilly/PDFs/SizeListings.pdf
The 13/16” (20 mm) Top Width section should be the area on the chart you're looking for
If you run a string around the the routing of the pulleys (includng the tensioner) then subtract .75"- 1.0" for the tensioner.
The alternator V pulley can be swapped for 6 rib pulley. This list will give you shaft dia and offset dimensions.
6 Groove Serpentine Alternator Pulleys

Last edited by spdbrake; 07-15-2017 at 02:31 PM..
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Old 07-15-2017, 08:16 PM
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Quote:
Originally Posted by spdbrake View Post
This is a list of Gates 6 rib serpentine belts.
http://www.gates.com/oreilly/PDFs/SizeListings.pdf
The 13/16” (20 mm) Top Width section should be the area on the chart you're looking for
Perfect! That's exactly what I needed. Thanx, man.
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