Issues w/serpentine belt shredding

[SBR70.3]

While installing my front sway bar, I noticed my serpentine belt was fraying significantly. I replaced it with the Gates K061066 (size recommended by Procharger). Upon start up, there was a loud tapping noise that matched engine revs. I took the belt off, reinstalled it, problem solved. That belt lasted about 4 miles and shredded.

Put a new belt on, triple checked everything, as I did with the previous belt. I got the same tapping noise as the first time but I could not get it to go away when realigning everything. I noticed the belt was sliding off the alternator pulley and moving towards the alternator ever so slightly. Once again, the belt made it a few miles before it shredded. My mods are in the sig, but mainly Prochager HO w/P1x and recent install of an Aluminator short block, so the accessories had to come off and be reinstalled. Any suggestions on where to start?

Tension was good using the "90 degree bend on the longest section of the belt" test.

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[Joshinator99]

Sounds like the pulley alignment is off…get a laser on it to see what’s up.

 

[DougS550]

While installing my front sway bar, I noticed my serpentine belt was fraying significantly. I replaced it with the Gates K061066 (size recommended by Procharger). Upon start up, there was a loud tapping noise that matched engine revs. I took the belt off, reinstalled it, problem solved. That belt lasted about 4 miles and shredded.

Put a new belt on, triple checked everything, as I did with the previous belt. I got the same tapping noise as the first time but I could not get it to go away when realigning everything. I noticed the belt was sliding off the alternator pulley and moving towards the alternator ever so slightly. Once again, the belt made it a few miles before it shredded. My mods are in the sig, but mainly Prochager HO w/P1x and recent install of an Aluminator short block, so the accessories had to come off and be reinstalled. Any suggestions on where to start?

Tension was good using the "90 degree bend on the longest section of the belt" test.

Put a straight edge from pc pulley to crank pully and check both pulleys are straight on top and bottom of both crank and pc pulleys. Something is off

 

[horsepower addiction]

What kit do you have

 

[horsepower addiction]

If this is a system that uses one belt for everything. When you install the first bracket (the one against the timing cover) there’s 3 spacers. 2 are the same but 1 is different. They have to go in the correct location or this will happen

 

[SBR70.3]

If this is a system that uses one belt for everything. When you install the first bracket (the one against the timing cover) there’s 3 spacers. 2 are the same but 1 is different. They have to go in the correct location or this will happen

Correct, this is the 1-belt system. I have had the P1x system on the car for a good 20K miles before the belt issue popped up. So I do not think it is from the spacers, but I will double check it when I put a new belt on. I replaced the idle tensioner and hope that was the issue.

 

[DougS550]

What kit do you have

Hi. If your asking which kit I purchased, I bought the Stage 2 kit with oversized heat exchanger. MMR Hurricane Oil Pump assembly and Ford Performance Timing chain kit with CS.
When I install my kit, I "WILL" ensure all pulleys have proper alignment for that is so crucial to keeping the belt on. Good Luck with your system.

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