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Thread: 8 rib alternator pulley problems, 03 MM

  1. 09-25-2024, 08:35 PM #1
    azgolfrat
    azgolfrat is offline Senior Member
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    8 rib alternator pulley problems, 03 MM

    During a recent remote tune with Marty, the alternator pulley lost several of its rear threads, and moved down the alternator shaft, away from the alternator body. This caused a severe misalignment to the nearby supercharger pulley and partially shredded the belt.
    The 8 rib pulley is a clutched INA brand. It installs with the 32 spline tool , similar to the OEM 6 rib non clutched pulley.

    Does anyone have any ideas how this might have happened?

    I will try to add photos.

    thanks



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    Last edited by azgolfrat; 09-26-2024 at 06:58 AM. Reason: trying to add photos
    '03 Silver Birch. Rebuilt 4.L 32V DOHC, V7-JT blower w/ADTR racing supercharger kit, Shift kit in transmission, stainless works long pipes and cat backs, Ridetech coil-overs front, shocks in back (ADTR kit). Rebuilt calipers, upgraded front rotors, OEM Mercury wheels, [boost, oil P, WB fuel/air, and fuel pressure] gauges. Build duration was Dec 2019 to Mar 2022. Upgraded to 8 rib belt to reduce slip, July-Nov '23. Car broke during tune with Marty Feb '24. Running again May '24. Still needs tune.
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  2. 09-26-2024, 08:24 AM #2
    azgolfrat
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    Sent from my iPhone using Tapatalk
    '03 Silver Birch. Rebuilt 4.L 32V DOHC, V7-JT blower w/ADTR racing supercharger kit, Shift kit in transmission, stainless works long pipes and cat backs, Ridetech coil-overs front, shocks in back (ADTR kit). Rebuilt calipers, upgraded front rotors, OEM Mercury wheels, [boost, oil P, WB fuel/air, and fuel pressure] gauges. Build duration was Dec 2019 to Mar 2022. Upgraded to 8 rib belt to reduce slip, July-Nov '23. Car broke during tune with Marty Feb '24. Running again May '24. Still needs tune.
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  3. 09-30-2024, 12:49 PM #3
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    fastblackmerc
    fastblackmerc is offline Everything Marauder, LEDs & HI
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    Never seen or remember hearing of that happening.
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    Ronald Regan

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    is to kill them, keep on killing them, until you kill the last one, then you kill his pet goat."
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  4. 10-08-2024, 07:54 AM #4
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    musclemerc
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    ^^Thats because no one else used a clutched alt pully on an 8 rib swap.
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  5. 10-08-2024, 09:15 AM #5
    azgolfrat
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    Well, very few anyways. David Kleist ( Blazen) did. He and I swapped to 8 rib at the same time. But to your point, in a recent conversation with Marty about this pulley, he advised against. I already have the non clutched in hand.


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    '03 Silver Birch. Rebuilt 4.L 32V DOHC, V7-JT blower w/ADTR racing supercharger kit, Shift kit in transmission, stainless works long pipes and cat backs, Ridetech coil-overs front, shocks in back (ADTR kit). Rebuilt calipers, upgraded front rotors, OEM Mercury wheels, [boost, oil P, WB fuel/air, and fuel pressure] gauges. Build duration was Dec 2019 to Mar 2022. Upgraded to 8 rib belt to reduce slip, July-Nov '23. Car broke during tune with Marty Feb '24. Running again May '24. Still needs tune.
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  6. 10-08-2024, 11:15 AM #6
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    musclemerc
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    Marty gave you some sound advice.

    I saw it in your build and thought WHY. To what benefit on a SC'ed car.

    Do ya really need the extra 2~3HP @WOT Rousch intended for our cars in the stock NA form? NO
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  7. 10-08-2024, 12:19 PM #7
    azgolfrat
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    Agreed. I know more now.
    David was very helpful to me when I was doing the 8 rib swap, for which I am always thankful.
    I’m a bit of a newb. I appreciate the inputs.
    Thanks


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    '03 Silver Birch. Rebuilt 4.L 32V DOHC, V7-JT blower w/ADTR racing supercharger kit, Shift kit in transmission, stainless works long pipes and cat backs, Ridetech coil-overs front, shocks in back (ADTR kit). Rebuilt calipers, upgraded front rotors, OEM Mercury wheels, [boost, oil P, WB fuel/air, and fuel pressure] gauges. Build duration was Dec 2019 to Mar 2022. Upgraded to 8 rib belt to reduce slip, July-Nov '23. Car broke during tune with Marty Feb '24. Running again May '24. Still needs tune.
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  8. 11-01-2024, 12:46 AM #8
    GetMeMyStogie
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    Quote Originally Posted by musclemerc View Post
    Marty gave you some sound advice.

    I saw it in your build and thought WHY. To what benefit on a SC'ed car.

    Do ya really need the extra 2~3HP @WOT Rousch intended for our cars in the stock NA form? NO
    It's not about hp, it's about the squeal the belt makes on the alternator pulley during hard upshifts. SC doesn't matter, only engines without a heavy alternator.
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  9. 11-01-2024, 08:24 AM #9
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    musclemerc
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    Quote Originally Posted by GetMeMyStogie View Post
    It's not about hp, it's about the squeal the belt makes on the alternator pulley during hard upshifts. SC doesn't matter, only engines without a heavy alternator.
    Anyone care to translate this? I can't get my head around what he's trying to say.
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  10. 11-01-2024, 10:01 AM #10
    azgolfrat
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    Quote Originally Posted by musclemerc View Post
    Anyone care to translate this? I can't get my head around what he's trying to say.
    I dont understand either


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    '03 Silver Birch. Rebuilt 4.L 32V DOHC, V7-JT blower w/ADTR racing supercharger kit, Shift kit in transmission, stainless works long pipes and cat backs, Ridetech coil-overs front, shocks in back (ADTR kit). Rebuilt calipers, upgraded front rotors, OEM Mercury wheels, [boost, oil P, WB fuel/air, and fuel pressure] gauges. Build duration was Dec 2019 to Mar 2022. Upgraded to 8 rib belt to reduce slip, July-Nov '23. Car broke during tune with Marty Feb '24. Running again May '24. Still needs tune.
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