Procharger needs idler pulley

[buns]

It's me again. Still trying to stuff the P-1SC under the hood of my '66 Corvette. I just finished mocking it up and now find that the drive belt rubs the power steering pulley, and barely clears the upper control arm cross shaft. If I lift the belt up about an inch, all is well. Would this be something that could be fixed with an idler pulley, and if so, where is a good place to get one?

I'm also wondering, since I need a shorter belt, should I take into account the spring loaded tensioner and idler pulley when I measure, or should I just measure around the crank pulley and supercharger pulley?

Thanks to all with more knowledge than me!

[DeltaT]

Look at the Dayco HD Pulleys and Tensioners catalog. Pulley are in back. You can find it on the web with a search - it's in .pdf format.

These are heavy duty pullies for diesel trucks - dual bearings, either powdered metal or billet, and inexpensive at ~$40 each.

Yes, you can use an idler to route the belt away from areas where you don't want it.

Jim

[buns]

DeltaT...thanks for the info. Now wondering how these pulleys attach. Do you just run a bolt through the middle?

[DeltaT]

Best to buy or make a stepped washer for the outer face of the pulley, and use a retainer bolt into a threaded post or maybe straight through to a locknut. I like using threaded posts that the pulley fits on at least 50% of the pulley depth. Strong setup, and these small blowers really like a lot of belt tension.

Some pretty clear pix at my site:

http://home.mindspring.com/~jim_fisk/id1.html

Jim