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  #11  
Old 06-10-2008, 08:31 AM
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GTE427 GTE427 is offline
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Bart,

I found some info on the 430cid Air Conditioning belt specification. In the AMA Specification, 60 Thunderbird, Issued 9-15-59, the specs for a 60 430 air conditioning drive belt is:

Angle of V: 36 degrees
Nominal Length (SAE): 44.24
Width: .50
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1959 J Convertible
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  #12  
Old 06-10-2008, 07:08 PM
bcomo bcomo is offline
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Ken:

Thanks very much for finding that.

The gates belt that I have now is the same Angle of V, and width. It's 1/2 inch shorter, but that wouldn't matter.

It looks like the belt vibration is from another issue, still to be found.
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  #13  
Old 06-10-2008, 09:48 PM
Alan H. Tast, AIA Alan H. Tast, AIA is offline
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Default AMA Specification

I've been trying to find a copy of the AMA specifications - I had one over 20 years ago for a '60 and a '61, but various moves over the years have misplaced it. Where did you find it, and/or is it possible to arrange for a photocopy of it?
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  #14  
Old 06-11-2008, 07:58 AM
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Alan,

I found this at one of the many literature dealers at Carlisle in the past. It's a reproduction , 28 pages and I would gladly send you a copy. PM your mailing address and email, if I can scan it I'll send a pdf, otherwise USPS.
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  #15  
Old 06-12-2008, 12:01 PM
bcomo bcomo is offline
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Default I'm very frustrated

OK -- I am really frustrated on this AC belt vibration.

I put a new AC belt on this AM, using a leverage bar -- so the flex in the belt is less than 1/2 inch.

When the car runs at idle without the AC engaged, the belt still flops up and down alot between the fan and AC pulleys.

Then, when I put the AC on, the belt vibrates up and down so much that it almost looks like it wants to jump the pulley -- it's that bad untill the RPM's climb over 1500

Can someone give me a comparison by running their engine at idle and see if the AC belt vibrates that much with the AC ON?

Thanks in advance.
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  #16  
Old 06-12-2008, 01:38 PM
FeFranco FeFranco is offline
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I'm curious, what kind of shape are all your AC pulleys? Anything on them that is barely noticeable, but enough to through off the belt a bit? A ding maybe? How are the bolts and bracket mounts?

Last edited by FeFranco : 06-12-2008 at 01:40 PM. Reason: Add another thought
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  #17  
Old 06-12-2008, 03:26 PM
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Franco:

I'll check for any pulley imprefections and reply back.

This engine was just rebuilt, so I had a chance to handle and paint every part. The AC bracket was perfect, and the bolts are new 8 grade bolts and washers.
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  #18  
Old 06-12-2008, 04:20 PM
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Lightbulb

Bart do u have ALL 4 bolts on the bottom of the A/C compressor now? I spoke with my father at lunch, he says u need to tighten the the compressor down even tighter. So it sounds like u need another set of hands down there for help holding that pry bar while u tighten those lower bolts down.....

-Jon
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Old 06-12-2008, 05:57 PM
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Jon:

I now have all 4 bolts on the compressor, and they are tight, with a liitle less that 1/2" flex on the belt (manual says 1/2"). Still have a fluttering belt at idle and worse with AC on.

Franco:

I checked both the AC and Fan AC pulley's. There are no imperfections on either one. And both of them track straight when they run (no side to side, or up and down movement that I can see)

*****
What I did notice is that the fan spacer between the pulley and the fan blade wobbles, and this makes the fan wobble. I don't know if this has anything to do with it -- anyone know if fans can wobble without a problem?

Is there enough room to remove the front bolts on the fan and spacer without taking out the radiator -- in case I want to replace the spacer?
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  #20  
Old 06-12-2008, 06:00 PM
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Lightbulb

Yes the fan blade & spacer can be removed w/o pulling the radiator. I would recommend u slide a piece of thin cardboard or construction paper behind the radiator, otherwise u will end up with some real bloody knuckles...
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