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Shaving A 14 Bolt
10-28-2015, 03:36 PM (This post was last modified: 10-28-2015 03:42 PM by Smithy.)
Post: #1
Shaving A 14 Bolt
One downside of a 14 bolt rear end is the lack of ground clearance under the differential housing. One way to solve the issue is with larger tires, the other is to cut down or shave the housing. This give and extra 1¾" of ground clearance, or roughly the equivalent of a 3½" taller tire without loosing strength. For this task I picked up a 15 bolt conversion kit from TMR.

Imagine the bottom three cover bolts cut off and a flat plate welded in its place.

   

Starting with a bare housing, I made a crude jig to locate the bottom of the axle tubes.

[Image: KIMG0096_zps2fupeta9.jpg]

Measured down 3⅛" and made a line.

[Image: KIMG0098_zpsddmtdhfq.jpg]

Rigged up a "water level" and set the cover face 6° up from perpendicular.

[Image: KIMG0102_zpsnlpsbfx9.jpg]

Hit it with some spray paint to mark the cut line.

[Image: KIMG0106_zpsjyheasbg.jpg]

[Image: KIMG0109_zpsbcku7pkl.jpg]

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10-29-2015, 04:33 AM
Post: #2
RE: Shaving A 14 Bolt
Ingenious! I like that water level. Did you say this would equal a d44 in clearance?

yj project under construction

https://www.youtube.com/user/goldxlt/videos
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10-29-2015, 07:13 AM
Post: #3
RE: Shaving A 14 Bolt
Thanks! I tried a few different ways to draw a straight line across all those fins and nothing seemed to work. The kit is made for a smooth '73-'87 housing. TMRs instructions show the housing being cut with a milling machine, and turning the ring gear with a lathe. This is the backwoods common hand tool version, lol.

Yes, clearance will be within ⅛" of a D44.

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10-29-2015, 01:20 PM
Post: #4
RE: Shaving A 14 Bolt
I looked into this ,was too much for my budget to gain an inch over a standard free shave. https://youtu.be/oyr5SJ9FY3MBut it it is a cool kit.
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10-29-2015, 03:10 PM
Post: #5
RE: Shaving A 14 Bolt
Thanks for taking the time to walk through the steps involved. I've only seen this done on Xtreme Off Road (not sure if it was the same kit). Looking forward to seeing the rest of the project.
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10-30-2015, 07:20 AM
Post: #6
RE: Shaving A 14 Bolt
Hopefully these posts will inspire an "I can do that!" attitude in someone who has never tried it before.

I should have put this a the beginning but here is what you get with the kit.

   

5/8" thick plate with a pocket machined out for the ring gear. This still gives 3/8" protection where you need it, and is much stronger than other kits out there.

   

One part welds to the housing and the other to the diff cover. Since I already have an armored cover there was no need to buy another.

   

Countersunk hardware and a nice lip to slide off of.

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11-02-2015, 11:48 AM
Post: #7
RE: Shaving A 14 Bolt
Think you might have shaved your current one a bit Sunday ...

Will the bottom portion be thick enough to drag over rocks?[/align]

Mike
2000 XJ Cherokee - 3.5'' lift / 32'' Tirerecapper Pizza Cutters / Front Locker
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11-02-2015, 12:46 PM
Post: #8
RE: Shaving A 14 Bolt
There are a few rock bouncers running this kit with no issues. It should be fine for slow tail use.

Got busy with the sawzall. No turning back now Big Grin

   

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12-19-2015, 11:21 PM
Post: #9
RE: Shaving A 14 Bolt
Looking great. Good idea on the level. I will keep that in mind.

How much was the kit?
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12-20-2015, 03:29 PM
Post: #10
RE: Shaving A 14 Bolt
Normally $150, I had a coupon.

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