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Car is seeing 12psi now.....

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Old Jul 17, 2003 | 10:58 PM
  #41  
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Default Re: Car is seeing 10psi now.....

Pulley alignment seems to be perfect when checked with a straight edge.

We are running the belt tight, and it seems the blower pulley is tearing the ribs off of the belt.

After a dyno run (where it hit 12psi, then dropped to 10), most of the ribs on the belt were shaved off. The inside of the belt being nearly as smooth as the outside, and shredded rubber is piled on the alternator.

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Old Jul 18, 2003 | 01:59 AM
  #42  
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Default Re: Car is seeing 10psi now.....

Interesting, I never knew that these pulley setups were going to be such a pain in the ***.....

Whats next to try?
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Old Jul 18, 2003 | 09:16 AM
  #43  
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Default Re: Car is seeing 10psi now.....

brian I shredded a lot of belts in the process, but now that mine is right I have 30 passes and never shredded a belt at all.
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Old Jul 18, 2003 | 09:50 AM
  #44  
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Default Re: Car is seeing 10psi now.....

The it almost has to be a flexing bracket if the pulley is aligned properly and still shredding the belt? (or the belt contacting anything?)



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Old Jul 18, 2003 | 12:20 PM
  #45  
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Default Re: Car is seeing 10psi now.....

TTT
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Old Jul 18, 2003 | 02:59 PM
  #46  
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Default Re: Car is seeing 10psi now.....

We had the same problem on my car, it appeared to be the entire bracket flexing. Even with the cog setup, once we were in the 15#+ range, we were tearing up belts.

Tom
www.ls1speed.com
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Old Jul 18, 2003 | 04:21 PM
  #47  
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Default Re: Car is seeing 10psi now.....

It is definetely the ****-poor bracket design.When the bracket flexes it allows the belt to ride up on the lip of the pulley and destroys the belt right now.It doesnt seem to be a problem until 10 psi with H/C and exhaust.Good luck Bos I went thru this bullshit last year,and got rid of my D-1 because of it.The only way I can think of to cure it is engineer a support for the bracket.What your going thru now is why I have a very negative opinion about ATI.
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