Classic Mustangs (Tech) Technical discussions about the Mustangs of yester-year.

9" Rear

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Old Apr 12, 2007 | 06:05 PM
  #1  
601HP's Avatar
601HP
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Default 9" Rear

Hey folks!!

I have a 1966 Mustang with a 9" Traction-Lok. I would like to do my own ring and pinion swap. What technical source do you recommend for me to refer to?

I have dial gauges, calipers, floor press, air power, etc. I just need good written guidance and also a source for shim packs, crush collars and such.

Thanks a bunch.
David
Old Apr 12, 2007 | 06:31 PM
  #2  
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Soaring
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Default RE: 9" Rear

Normally, I would advise to take the rear to a pro and have them do it because it can be screwed up real easy. However, you sound like you might know what you are doing. Here is a fairly good tech article about how to do it. Good Luck!
http://www.drivetrain.com/ringpinioninstal.html
Old Apr 13, 2007 | 06:18 PM
  #3  
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601HP
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Default RE: 9" Rear

Soaring,
Thank you very much. I'm always open to a new challenge, so with the proper parts, information and tools, why not try to increase my mechanical skills? At age 54, why quit now?

David
Old Apr 13, 2007 | 06:29 PM
  #4  
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gothand
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Default RE: 9" Rear

Take a look in the factory service manual which gives a pretty good writeup on this IIRC. From what I've seen, setting up a removablecenter sectionlike the Ford 9" is a bit different than say a Dana axle.
Old Apr 13, 2007 | 06:36 PM
  #5  
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350kmileFord
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Default RE: 9" Rear

It's supposed to be easier, the 'frontloading' type (9")
Old Apr 13, 2007 | 07:22 PM
  #6  
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DonA
 
Joined: Jan 2007
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From: NJ
Default RE: 9" Rear

As someone who has taught this proceedure about a hundred times I can gurantee that you will not do it correctly even with the best written instructions.

You must first understan exactly what you are trying to accomplish.

On the other hand once you do understand that you can set up any rear car or truck

The end result of what you are trying to do is to extablish a proper contact between ring and pinion teat and to make sure that it will NOT varie even the slightest bit even under full engine torque multiplied many times by the convertor plus the transmission plus the rear

There are four esential adjustments

1. Pinion Depth
2 Pinion bearing preload (The most mis-understood)
3 Ring and pinion back lash
4. Differential Bearing Preload

Old Apr 13, 2007 | 08:10 PM
  #7  
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66GTKFB
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Default RE: 9" Rear

Right-on.
Jim
Old Apr 15, 2007 | 05:31 PM
  #8  
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mikethebike
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Default RE: 9" Rear


ORIGINAL: DonA

As someone who has taught this proceedure about a hundred times I can gurantee that you will not do it correctly even with the best written instructions.

You must first understan exactly what you are trying to accomplish.

On the other hand once you do understand that you can set up any rear car or truck

The end result of what you are trying to do is to extablish a proper contact between ring and pinion teat and to make sure that it will NOT varie even the slightest bit even under full engine torque multiplied many times by the convertor plus the transmission plus the rear

There are four esential adjustments

1. Pinion Depth
2 Pinion bearing preload (The most mis-understood)
3 Ring and pinion back lash
4. Differential Bearing Preload

And if he has REAL power he might want to consider a 'load bolt' that is nothing more than a bronze tipped bolt mounted in the housing that is adjusted so should the ring gear attempt to back-up more than around 1/100" it will contact the bolt and STOP. All the pro-drag racers back in the 60'70's used them. Worked grreat. CHEAP!!!!!!!
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