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Thread: Adjusting alternator tension

  1. #1
    Senior Member Kenny_Z's Avatar
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    Adjusting alternator tension

    I've heard several times on the forum that people want a way to fine tune their alternator's belt tension. Has anyone tried one of these?

    http://www.superchevy.com/tech/sucp_.../photo_12.html

    I was thinking about it last night as I was removing my alternator. It looks like a straight shot where one of these would work perfectly.
    Red
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  2. #2
    Owner since 2007 Farrar's Avatar
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    You can make your own one of these from off-the-shelf parts. Matt Spittle has done so and the parts for mine will arrive tomorrow.

    Edit: Got a pic --

    403303_10102335245007174_9318120_89970331_474016154_n.jpg
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  3. #3
    Administrator Ron's Avatar
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    Ah, I thought you had a Delco (10Si) style for some reason, Farrar. That's why I mentioned the fan hitting (the ears are straight across) in your thread...

  4. #4
    Senior Member Kenny_Z's Avatar
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    I found one on ebay for 8 bucks. I couldn't build it for that cheap. I am planning to put a caddy alternator in though. The tab placement is a little different but I should be able to make it work.
    Red
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  5. #5
    Owner since 2007 Farrar's Avatar
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    Quote Originally Posted by Kenny_Z View Post
    I found one on ebay for 8 bucks.
    Is it stainless? Just curious.
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  6. #6
    Senior Member Kenny_Z's Avatar
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    Nope, plated steel. It is a part from a Buell motorcycle. I'm not sure it's going to work out with my new alternator, if it does I may make a stainless one.
    Red
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  7. #7
    Owner since 2007 Farrar's Avatar
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    Quote Originally Posted by Kenny_Z View Post
    Nope, plated steel. It is a part from a Buell motorcycle. I'm not sure it's going to work out with my new alternator, if it does I may make a stainless one.
    If you decide to do this, I can let you know what parts to order from McMaster-Carr.
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  8. #8
    Senior Member Kenny_Z's Avatar
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    That's where I was looking for parts when I ran across the ebay deal. I'll take you up on that because I'd love to make a stainless version for my Nova and Stang.
    Red
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  9. #9
    Owner since 2007 Farrar's Avatar
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    I just got my parts order from McMaster a few minutes ago. The threaded connecting rod is aluminum. Everything else is stainless. So if your car sees lots of humidity like mine, you might want to put a thin layer of anti-seize on the threads to avoid galvinic (sp?) corrosion -- however I think the engine compartment generally gets hot enough to ward off that possibililty. The jam nuts will hold the tension where you set it once you've got it where you like. (The Heim joints themselves are lined with Teflon.)

    I like this setup so much I wonder if I could rig up something similar for an a/c belt tensioner... but that way may lie madness! :P
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  10. #10
    Senior Member mluder's Avatar
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    Quote Originally Posted by Farrar View Post
    I just got my parts order from McMaster a few minutes ago. The threaded connecting rod is aluminum. Everything else is stainless. So if your car sees lots of humidity like mine, you might want to put a thin layer of anti-seize on the threads to avoid galvinic (sp?) corrosion -- however I think the engine compartment generally gets hot enough to ward off that possibililty. The jam nuts will hold the tension where you set it once you've got it where you like. (The Heim joints themselves are lined with Teflon.)

    I like this setup so much I wonder if I could rig up something similar for an a/c belt tensioner... but that way may lie madness! :P
    Isn't there already an AC belt tensioner?
    Part number 17 -
    7-2-1.jpg
    Cheers
    Steven Maguire
    #4456


    IT'S A TRAP!!!!!

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