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Old 07-03-2008, 03:45 PM   #1
jackyl9999
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Serpentine questions

I have a few questions about my serpentine setup which came off a 88 s-10.


#1 Do I need to have the idler that goes where the arrow is pointing? If so where can I get one?

#2 How do I route the belt on this set-up? And does anyone have a part number that will work? I bought the belt for a 88 s-10 and it was way too short.


Thank you for looking. If it wasnt for this website, I would have quit a long time ago.
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Old 07-03-2008, 03:59 PM   #2
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Re: Serpentine questions

You do not need an extra idler pulley.
Look at the diagrams part way do this page for routing:
http://www.2carpros.com/forum/1990-c...-vt132692.html
For my belt I just ran a string and measured. Then got a belt that length. There are so many different serp bracket setups that its hard to do part numbers.
What water pump are you using?
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Old 07-03-2008, 05:03 PM   #3
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Re: Serpentine questions

When I did mine- I wasn't sure if I needed that pulley or not. The GMPP kit comes with it- so I figured I'd better get it. I got mine from the local stealership but the link below has them for about 10 bucks less. If you do use this idler- get a Gates #K060970 belt. If you opt not to use it.....I am no help to you, cause I don't know what the correct belt would be.

http://www.tpiparts.net/inc/sdetail/399
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Old 07-03-2008, 06:47 PM   #4
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Re: Serpentine questions

I think you could get away with out it but with it you have that much more belt contact with the pulley. If you didn't have A/C I'd go without. I have the same setup on mine and I used the idler. I used a K060935 belt and then a 940 which is 1/2 shorter than a 935

Last edited by dwcsr; 07-03-2008 at 06:51 PM.
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Old 07-04-2008, 08:58 AM   #5
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Re: Serpentine questions

good info
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Old 07-04-2008, 09:18 AM   #6
jackyl9999
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Re: Serpentine questions

Quote:
Originally Posted by neonlarry View Post
You do not need an extra idler pulley.
Look at the diagrams part way do this page for routing:
http://www.2carpros.com/forum/1990-c...-vt132692.html
For my belt I just ran a string and measured. Then got a belt that length. There are so many different serp bracket setups that its hard to do part numbers.
What water pump are you using?
I went to oreilly's and asked for a 88 s-10 water pump.
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Old 07-11-2008, 11:36 AM   #7
wHATANERD
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Re: Serpentine questions

jackyl9999, I'm also in the process of installing a serpentine system in my truck. What A/C compressor are you using with your setup?
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Old 07-12-2008, 09:59 PM   #8
jackyl9999
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Re: Serpentine questions

http://www.oldairproducts.com/catalo...00000_69000003I got it from old aire. They offer them for a serpentine.
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Old 07-14-2008, 07:38 AM   #9
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Re: Serpentine questions

Thanks for the 411
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