T-case flange measurement needed... - Defender Source
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  #1  
Old March 14th, 2016, 10:31 PM
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T-case flange measurement needed...

I forgot to grab one when I left the shop tonight. Does anyone have one that they can easily put a tape on? I'm looking for the measurement across the four bolt holes for the driveshaft. Thanks in advance!

-Ash
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  #2  
Old March 14th, 2016, 10:37 PM
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The hole spacings are 2.0" and 2-3/8". The alignment bore is 2-3/8".

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Old March 14th, 2016, 10:43 PM
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Awesome. Thank you John.

-Ash
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  #4  
Old March 14th, 2016, 11:11 PM
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Ok, am I just tired or is there a typo in that diagram? Dim 'B' doesn't coincide up when I locate my holes using 'C1' and 'C2'. Granted, it's a very small amount and I guess I can just oversize my bolt holes slightly to play it safe. Where'd you pull that from?

-Ash

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Old March 14th, 2016, 11:22 PM
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Your right it doesn't work.
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  #6  
Old March 14th, 2016, 11:31 PM
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The picture is from Tom Woods. Must be a typo. The diagonal is 3.105" as you show.
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Old March 14th, 2016, 11:34 PM
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Quote:
Originally Posted by Baldewin View Post
Your right it doesn't work.


Haha I just redrew it to illustrate the issue and you edited your comment. For posterity, here's what it looks like when I set the holes so that 'B' is correct per the diagram.

-Ash

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Old March 14th, 2016, 11:50 PM
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Okay. Went and measured a flange.

2.0" and 2.395" and the diagonal does look 3.125" as best I could measure.
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  #9  
Old March 15th, 2016, 12:17 AM
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Hard to find a definitive answer...

http://rockforddriveline.com/2_FlangeYokes_2014_10.pdf

Says 2.015, 2.390 and a diagonal of 3.125"

Interesting there is a Jeep flange yoke of the same dimensions. Maybe they used the original Jeep pattern?
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Old March 15th, 2016, 07:06 AM
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Probably intentional on Tom's part to discourage copycats
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  #11  
Old March 15th, 2016, 07:10 AM
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All the flanges fit regular Dana Spicer pattern from early Series thru at least 1997
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  #12  
Old March 15th, 2016, 09:21 AM
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Quote:
Originally Posted by Red90 View Post
Okay. Went and measured a flange.

2.0" and 2.395" and the diagonal does look 3.125" as best I could measure.
I appreciate your help. Ended up using the above dims to draw my part, and I'll bounce them off a flange here before I send them to the laser. Thank you.

Quote:
Originally Posted by sonoronos View Post
Probably intentional on Tom's part to discourage copycats
Yeah, that seems to be the most likely scenario.

-Ash
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  #13  
Old March 15th, 2016, 08:29 PM
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Quote:
Originally Posted by o2batsea View Post
All the flanges fit regular Dana Spicer pattern from early Series thru at least 1997
Had a bit of a look for a genuine Spicer flange yoke of the right size.

Northern Drivetrain, LLC: Spicer 2-2-459
Quote:
Spicer 2-2-459
Bolt Circle Diameter B 3.125
Horizontal Distance Between Holes (center to center) 2.009
Vertical Distance Between Holes (center to center) 2.394
Bolt Hole Diameter .375-D
Bolt Hole Quantity 4.000
Pilot Diameter (M-Male, F-Female) C 2.375M
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