Supercharger belt making squealing noises...again...

so just to confirm u do have the new automatic tensioner?

I would use a straight edge across the crank pulley and then to all the other pulleys to see if anything is out a bit. I just did that to confirm mine were all straight on my own car.

What kind of belt? Gates?

Cobra SC belts squeak too. The solution is to scuff of the non-ribbed side with 220 grit sand paper to get rid of the shine.

If not that then the other solution is to use a Gates Fleetrunner belt. They’re green. And for some reason they grip better and don’t make noise. About double the price of a regular belt though.

Before you do anything check to make sure you have the new update auto tensioner. In theory if you have the new tensioner that should never happen. On acceleration the belt tightens up. If this happened just coming out of the car wash the wax or detergent could have gotten on the pulleys making it slick. Also could have washed some oil onto the pulley. Is this still happening days latter.

You need a bigger supercharger . That must be it !

A couple updates.

  1. I don’t seem to have the latest tensioner. Maybe something I should look into getting.

  2. I can confirm this is ONLY happening when the belt gets wet. When the belt is dry, it’s perfectly fine and quiet. But when it gets wet, it squeals like a pig the higher in the RPM range I go. At idle and low RPMs, it’s quiet event wet. But as I get to 3k rpms it starts squealing and gets louder as I approach redline.

The location of the belt is very low and fully visible from the fog grill. This means that water gets to the belt very easily if it’s wet outside or if I’m plowing through heavy snow.

Maybe I should look into filling in that grill? Or put a mesh to reduce water but still let air through?

Not saying I told you so but … you know.

Supposedly there is a block off plate that is supposed to come in the SC kit to block off the opening by the fog light grill opening. JHM was supposed to ship it out to me but after asking twice and not receiving it I gave up.

The new tensioner would totally eliminate all that. So maybe think about getting that. The block off or extra screen is a good idea to reduce the snow from getting in there and melting. During the summer I would say remove the block off of you fully block it off.

How would it eliminate the squealing noise from getting wet? What physical changes exist in the new tensioner for a wet belt to no longer make noise?

I’ve Actually Seen the tensioner in action. As your rpms go up and the tq on the belt goes up the tensioner adds tension. Right now your tensioner is set at one point and it’s fixed at that point. The auto tensioner will add tension as needed. It’s pretty slick.

Ok, cool. Thanks. I sent JHM an email this morning. We’ll see if they reply lol

Why not phone them? Instant gratification!

And spend money calling them when an email is free? :slight_smile:

Updated tensioner just purchased. Will let you know in a month whether it fixed the squealing.

Do you have piggie pipes?

It should. Especially if the issue was pulley related. And it every bit appeared to be

Of you look in his signature he has trexturk dps. A great solution in dps. Does anyone know if he still makes them.

He does! I bought some from him two months ago! very high quality

I thought maybe that’s from where the squealing was coming.

It’s a belt squeal. Not really any belts near or in the DPs :slight_smile:

Piggies squeal sometimes.

It took a few posts for your joke to come full circle lol