RE: [Chrysler300] The Belt Jumpin' Blues

[<john_nowosacki@xxxxxxxxxxx>]

I've owned a 61G coupe, 62 NYer Wagon, and also own a 74 Jensen Interceptor, all with a/c.

The tensioner on the Jensen is stock equipment, maybe from mid 70's Chryslers or they engineered it themselves, I'm not sure which.

When I last bought new belts from NAPA, my very knowledgeable counter guy told me that the manufacturing process at Gates (and others) was so superior now as opposed to 'the old days', that there wasn't a need to market match pairs of belts.  The manufacturing tolerances were such that the belt to belt differences were no longer an issue.
I bought two individual belts and put them on my car and they sure did seem almost identical in length/deflection on the car.
The Interceptor tensioner is a good idea, and I'd recommend it as an add-on for safety to any Mopar a/c system.

John

-----Original Message-----
From: Chrysler300@xxxxxxxxxxxxxxx [mailto:Chrysler300@xxxxxxxxxxxxxxx] On Behalf Of Jack Farris
Sent: Saturday, August 19, 2006 5:41 PM
To: mallyn@xxxxxxxxxxxxxxx
Cc: Chrysler300
Subject: Re: [Chrysler300] The Belt Jumpin' Blues

The last time I looked for matched belts (bundled together), I  
couldn't find any. What I did discover, however, after sorting thru  
Napa's supply, is that each belt has it's own unique markings  
depending on where it was cut from the master roll. Luckily, I found  
two that were cut adjacent to each other. Because of the long span  
between the compressor and the alternator on B and RB engines fairly  
equal tension is especially important. Often, the pulleys don't line  
up too well, which also contributes to belt wobble and throwing.

At a car show the other day, I noticed that a Jenson Interceptor had  
a (factory appearing) tensioner mounted about halfway between the  
compressor and alternator (JI's have RB engines)--a good cure for  
curing belt wobble.

Jack


On Aug 18, 2006, at 7:31 PM, Matt Allyn wrote:

> So after 27,000 miles on my new 413 for our '62 300 Sport I decided  
> to get the A/C charged.  Neat thing, this cool blowing air inside a  
> car!
>
> So today I have the A/C blowing away and I hear a slight squeal  
> start in under the hood.  I push OFF, pop the hood to see the front  
> of the two A/C-Alternator belts has jumped the track and is now  
> hanging out in front of the compressor pulley.
>
> Thoughts on the cause?
> Belts too tight before?
> I know they were not too loose before the jump.
>
> Thanks!
>
> Matt Allyn
> Exec. in Charge of Prod.
> Granada America
> 323-785-2129 office
> 323-785-2151 fax
> 562-533-2551 cell
>



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