Squeeeeeeeeeeeeeeeeeeeeelll

N

Nick in Fayetteville

Senior Member
I really could use some help here. I have a fan belt on my flathead V8 that squeels when I start the car and will some time continue to squeel for several miles. Eventually, it stops squeeling. Facts: The fan belt is new. It matches the grooves in the pully. I have tighten it. Loosen it. Put soap on it. Cleaned it with brake parts cleaner. I have used belt dressing. Nothing is working. Any ideas....Thanks...Nick
 
The generator is putting extra load on the belt until the battery recovers from starting, so my bet is a very worn generator pulley. A new belt can't get a good grip on a pulley with the sides worn concave. ..B.
 
I agree with barlea you have a shinny slippery pulley, or one of your pulleys is out of alignment with the others, take a small spoon full of ajax or comet cleanser or any abrasive cleaner and put it on the pulleys , then start up and see what happens, ben in this trade a long time and never have I seen belt dressing work
 
I agree with joe 1950. You may have a misaligned pulley. Buy a length of straight round wood dowel that fits in the v-groove between each pulley and see how they line up with each other.

Lonnie
 
This question frequently comes up. The "B" belt is designed for electric motor applications NOT automotive as it frequently is used. The difference between a "B" belt and a Ford belt is the slope angle of the belt's size. As a result, the "B" belt drops down into the pulley deeper but due to the sharp angle of the belt only the top 3/16" of the belt is in actual contact with the Ford pulley. So, it has a tendency to slip unless it is over-tightened which can cause other problems. With the Ford belt the entire sides of the belt are in contact with the pulley groove providing less or minimal slippage with only moderate tightening. The pictures should help.

Tom
 

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So you've converted your Flathead-powered rod over to 12 volts and bolted a GM alternator in place. Now it's time to install the belt, but your engine pulley is 5/8" and the alternator is 1/2"!

Don’t worry, Speedway has you covered. This alternator pulley allows the use of a 5/8" wide Flathead-style belt on GM externally regulated, SI and one-wire alternators.

Copied and pasted from Speedways ad....?Maybe this could be your problem?
 
Since you're using a alternator with a smaller pulley and a wide belt, a cog belt would help because it bends better around a small pulley.
 
Whether it is pulley or not, I agree with Joe 1950, belt dressing is a short lived band-aid and will eventually coat the pulley. Best to clean that crap off.
 
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