Belt Squeel

How about a shorter belt or some belt dressing? I believe a little brake fluid on a belt can keep it from squealing.

Art

Just a thought. I probably the same Alt setup as you and found when I first installed it I got a squeal at engine start up. I had to change to a single pully because of the engine cover, that is when it started. This Alt has a higher resistance at startup because of its ability to charge at lower RPMS and the internal fan, hense the reason for the double pully. I would not only check the tension, but the belt or pullys for glazing. If present, replace. Belt dressings are a bandaid over a problem. Also check the type and rating of the belt, some just grip better before slipping or worse, stretching.

Angelo

I was just talking to a friend of mine who just attended SEMA about a V belt problem I had with my 'goose. He said a vendor at SEMA told him that the V belt system was the most alignment forgiving set up out there, that's how it was designed. A cogged belt allows it to conform better and may help you.

I put a straight edge across it horizontally. I measured the angle of the pulleys vertically. It does not appear to be a positioning issue. I am using a vbelt. The pulley inside the groove is polished and it heats up immediately.

I am starting to think that the pulley is to small in diameter. That it takes to much torque to spin the alternator. I am going to get a larger pulley.

quote:

Originally posted by captaintobeys:
I have a pulley alignment issue that is killing me. I am about to pull an Elvis.

I replaced the stock alternator on my car with a 130 amp internally cooled and regulated. I can not get rid of the belt squeeling. I have tried to shim it this way and the other. Tried a couple of different pulleys. I found a place where the bracket was up against the block casting. No luck.
Has anyone else experienced this problem who might have a suggestion? What is the part of the bracket for that reaches behind a cast ear on the block that has a bolt?

Try getting the belt as tight as you can. I have a 140 amp alternator and as soon as I start increasing electrical load, the belt will slip and make noise. If all of your sheaves look good and it is the correct belt, the noise should go away.

I worry about the side load on the waterpump bearing when the belt is very tight.

I had the same trouble when I did the same swap. I used the pully from the stock alternator on the new one. Then made adjustments to the alinement with grinding the mounting bracket (on the alt).