Kenne bell 2.6 3” belt size?

Discussion in '2005+ Mustang GT 4.6L Tech' started by Alex123, Mar 11, 2020.

  1. Alex123

    Alex123 Junior Member

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    Getting ready to hit the Dyno in a few week. I will be replacing my stock Kenne bell blower pulley for a 3” pulley as Kenne bell advises me that it’s the smallest pulley that I can run safely on the blower. It’s an 05 mustang with a 2.6 Kenne bell. I am look for the belt size for the 3” Pulley.
     
  2. Alex123

    Alex123 Junior Member

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    Iron block with forged internals
     
  3. JJ427R

    JJ427R forum member

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    Why didn't you ask Kenne Bell? They should know this?
     
  4. Alex123

    Alex123 Junior Member

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    I called them they didn’t know
     
  5. JJ427R

    JJ427R forum member

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    When I bought my 2.49 Roush M90 pulley thru JDM engineering, they included a different size idler pulley so my belt size stayed the same, maybe you can do that as well? As a thought give JDM Engineering a shout and just maybe they know the size you need? Worth a try anyway. https://www.teamjdm.com/
     
  6. Alex123

    Alex123 Junior Member

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    I’ll look into it thanks.
     
  7. Racer47

    Racer47 Doesn't have much to say S197 Team Member

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    What pulley is on it now? What belt is on it now? Do you have the adjustable position idler pulley that sits by the alternator? If yes, what hole is it on? Where in the tensioner travel are you now? And 3" is not necessarily the smallest pulley. The limit is determined by supercharger max rpm, which I think is 18,000 rpm for a 2.6L.
     
  8. Alex123

    Alex123 Junior Member

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    Just in case anyone needs the info it’s a 120.3 inch belt.
     
  9. That’s funny, I still have a 2.75” pulley I ran on mine years ago and I never had issue.
     
  10. Racer47

    Racer47 Doesn't have much to say S197 Team Member

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    That's why I gave trying to help. There are many variables that the op never answered.

    KB knows exactly what belt size is needed. They probably asked the same questions that I did. But if the op can't provide those answers, how can they determine the belt length needed?
     
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