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  • 1965 - 1973 Classic Mustangs -General/Talk-
  • Classic Mustang Specific Tech

Early 9" bearing dimensions? Not fitting rear

  • Thread starter Thread starter jasonface1
  • Start date Start date Mar 3, 2010
J

jasonface1

New Member
Jan 18, 2010
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0
Mar 3, 2010
#1
  • Mar 3, 2010
  • #1
OK, before you all rag on me for not using the "search" feature, I did This is a bit different from all the "does this/that bearing fit this/that rear I have" questions I looked at. Here's my problem:
I have a '66 K-code Mustang. It came stock with the small bearing 9", and still has that original rear. I'm putting the rear back in, and have upgraded the axles to Moser 31 spline to match the 31 spline locker I installed. I had new bearings pressed onto the axles. Here's where my problem starts: Test fitting the axles into the rear, the bearings on each axle protrude about .120" out of the ends of the axle tube (past the "flat" on the flange). Left and right protrude about the same amount. I was under the impression that the retainer plate should be able to bolt down flush to the flange on the rear, but with the bearings sticking out like that the retainer plates are sitting off of the flange, and instead resting on the bearings themselves. Napa says I have the correct part # for the application, showing a bearing .844" in width, which is what mine measured at. I unfortunately do not have the old bearings anymore to compare, I trashed them. So, is there a different bearing I'm supposed to have, narrower in width than the ones I got? Or is there something else I'm missing here?
 
C

cobraii351

Founding Member
Jan 10, 2000
1,104
4
39
Altoona, PA
Mar 3, 2010
#2
  • Mar 3, 2010
  • #2
Do you have the drum brake back plates installed? That would take up some of the space.
 

dodgestang

Active Member
Dec 15, 2003
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37
Cecil County, MD
Mar 3, 2010
#3
  • Mar 3, 2010
  • #3
I had the same problem with my 57 ford 9 inch when I put new 31 spline strange axles in. I run a disc brake setup though. I bought simple slip on axle retainer plates and milled them down to the correct thickness I needed and use them as a spacer to give me the correct fit of the axle retainer plate to the axle mounting surface



 
2

2+2GT

10 Year Member
Apr 25, 2009
3,333
10
79
Southeastern Pennsylvania
Mar 3, 2010
#4
  • Mar 3, 2010
  • #4
Easy. They either installed the bearings incorrectly, or used the wrong bearings.
 
J

jasonface1

New Member
Jan 18, 2010
7
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0
Mar 3, 2010
#5
  • Mar 3, 2010
  • #5
:face palm:
You ever have one of those Homer Simpson "DOH"! moments?
Cobra, you're correct, I was looking at it without the backing plates.
In the words of the immortal Rosanne Rosanadana "Never Mind"
 
Z

zigmont

Member
Mar 2, 2009
81
0
6
Mar 3, 2010
#6
  • Mar 3, 2010
  • #6
What is the part# for the bearings you used?
 
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