Weird noise from s/c

[B18C]

I'm having a bit of a weird problem that I'm wondering if you guys can help me out with.

When I start from a stop my car makes this weird whrrrr noise. If I go off the line really slowly I don't get it. This started a couple months ago and has progressively gotten worse. I took it to the dealership for a tune-up and they said it was coming from my supercharger.

What do you guys think? Maybe a worn bearing or something?

Thanks

[Y2KSI]

Check under the nose of your SC by the pulley. If there is oil leaking from under it you have a bad seal or bearing and that could possibly cause it.. I might be wrong though.

[JRciv]

Originally posted by B18C:
I took it to the dealership for a tune-up and they said it was coming from my supercharger.

<font size="2" face="Verdana, Helvetica, sans-serif">Yeah, that makes sense - they'll blame it on the one thing they don't have to service. I REALLY don't trust other people around my car.

I would first make sure it is really the supercharger. I'm always tearing my car apart and when I put it back together the funny noises that come up are usually drivetrain related.

If the problem was mine, I would go through this series of troubleshooting:

1. Try tightening belt (obviously).
2. Look for oil around nose bearing indicating a necessary rebuild.
3. Check the idler pully bearings. If the pullies themselves are still good, you can buy just the bearings from a bearing manufacturer and save yourself some of the $70 that jackson racing charges.
4. Make sure the belt isn't rubbing your lower timing cover.

Other than that, nothing else I can think of would possible make noise.

[JRCivic]

Just for reference...

The new style plastic JRSC idler pulleys have the bearings CAST IN. You cannot service them. The old style aluminum idler pulleys had a serviceable bearing pair held in place by a snap-ring. You must identify which type you have first before you order the necessary parts to fix them.

[JRciv]

Oh geez, really? Maybe I shouldn't have sold my metal pullies [img]redface.gif[/img]

I sold them and bought the plastic ones to reduce mass.