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Does this S/C belt look installed correctly to you ?!!

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  #21  
Old 09-26-2024, 09:24 AM
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Could the two pulleys be in the wrong position looking at your first photo the idler pulley near the supercharger has ribs on the outside of it, but on the other photo posted by the other member, those ribs seem to be on the lower pulley

another thing to look at is to make sure the belt is not riding on the edge of a pulley like on the crank. It looks like there’s extra space next to the belt down on the crank.

 
  #22  
Old 09-26-2024, 09:27 AM
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some of these for whatever reason came with a smooth pulley it looks like it has ribs but its just from the belt marks. . I am going to swap it out, before I swapped the 2 other pulleys they were smooth also. No there are no belts riding on the edge that was the first thing I looked for, There are no pulleys in the wrong place either. thanks for the reply
 

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  #23  
Old 09-26-2024, 09:28 AM
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I guess my question is, does it run without noise or shredding the belt? you can check alignment with a laser if you wish. No pulley wobbles?
 
  #24  
Old 09-26-2024, 09:33 AM
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So there is some noise but I just figured that was from
reseating the pulley on the supercharger after having it straightened and rebuilt.
 
  #25  
Old 09-26-2024, 11:27 AM
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If all the pulleys are correct and riding correctly, the only possible answer is that the belt is too short.

One quick way to check for this is to loosen the tensioner and see where it’s positioned compared to the full range of movement. the tensioner with the belt installed should be midway between the maximum and minimum stops on the tensioner. If the belt is too short, it will be all the way near the minimum side.

 
  #26  
Old 09-26-2024, 12:03 PM
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there is still not enough information to guess/speculate over the web. OP is running a VelocityAP belt and I'm guessing has an aftermarket pulley.

The 1438 belt is not OEM length, none of them are. If the belt is wrong and pulleys are all OEM including crank and supercharger, then I'd say that's a likely cause. No idea though.

For individual pulley noise get a stethoscope and confirm none of them are bad. That part is a 5 minute job.
 
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