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ARP head stud failure.

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Old Feb 11, 2008 | 05:26 PM
  #16  
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From: South Florida
I must have had the old part cause i paid around 100.00 for them.. They arent the L19 i know that.. the L19 material is much more brittle and looks different for sure..
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Old Feb 11, 2008 | 07:28 PM
  #17  
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From: Virginia
Originally Posted by davidbuschur
The 75 ft lb ARP spec is not tight enough. The stud is not that strong and the diameter is "small". They can be torqued to about 90 ft lbs with no problem. Anymore and they stretch. In this case I am guessing someone attempted 100+ on them and that is not possible.

I suppose it could be a counterfit stud but it was probably just installed wrong before we got the car.
Thank you Dave. Makes me feel better about mine
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Old Feb 11, 2008 | 07:37 PM
  #18  
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From: Peekskill NY
I can't believe it didn't snap, they must have been real close to doing so when they tightened that bad boy
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