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Old 02-28-2009, 03:48 PM   #1
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DIY 8.8 rear narrowing

I've got a pretty good handle on how to make a jig, get everything setup and execute this. What precautions should I take?

Its a build 8.8 with stock ends, c clips.

take the axles, c clips out set the jig up, cut at end of flanges (end of axles), reweld using jig.

I plan on using TIG with the weld.
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Old 02-28-2009, 08:42 PM   #2
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Old 02-28-2009, 09:02 PM   #3
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what jig are you talking about? you need an alignment bar and spacers. need to keep the housing ends square and true with the carrier bearing bores. andmost likely the housing is already fairly unstraight
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Old 02-28-2009, 11:17 PM   #4
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Take the rear housing to a shop and have them weld on 9" ends I paid my shop 200.00 to narrow the rear 2.25" each side and weld the axle tube to the center section and weld on a rear support brackets . Go here http://www.cardomain.com/id/capri460 to see more of my car and the work I did on the rear . Good luck .
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Old 03-01-2009, 09:03 AM   #5
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Quote:
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what jig are you talking about? you need an alignment bar and spacers. need to keep the housing ends square and true with the carrier bearing bores. andmost likely the housing is already fairly unstraight
Absolutely.........I ordered the spacers from these guys, and got the bar from my local metal fab shop....... http://www.mittlerbros.com/rear_end_...ccessories.htm
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Old 03-01-2009, 10:04 AM   #6
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Absolutely.........I ordered the spacers from these guys, and got the bar from my local metal fab shop....... http://www.mittlerbros.com/rear_end_...ccessories.htm
that is EXACTLY what i ended up with when i made mine a few years ago
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Old 03-01-2009, 10:11 AM   #7
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Absolutely.........I ordered the spacers from these guys, and got the bar from my local metal fab shop....... http://www.mittlerbros.com/rear_end_...ccessories.htm
Those look nice.

With respect to the 9 inch ends, i already have the rearend built and together with the axles and c clips. I would rather just stay with what I have since the axles are 35 spline, gundrilled and star flanged. I thought you have to order new axles with the 9 inch ends?

With the jig, I would make it myself.

I already have a 1 inch round tube brace welded on underneath from each coil over bracket (rear coil overs....its mini tubbed) that goes underneath the center.

Can i still do this?
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Old 03-01-2009, 10:12 AM   #8
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Take the rear housing to a shop and have them weld on 9" ends I paid my shop 200.00 to narrow the rear 2.25" each side and weld the axle tube to the center section and weld on a rear support brackets . Go here http://www.cardomain.com/id/capri460 to see more of my car and the work I did on the rear . Good luck .
Was that $200 total? Seems like a good deal.
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Old 03-01-2009, 10:29 AM   #9
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Will a tig be able to weld the rear? The chassis shop that did mine said it takes ALOT of welder to weld the thick cast iron of the rear end housing
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Old 03-01-2009, 10:44 AM   #10
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Will a tig be able to weld the rear? The chassis shop that did mine said it takes ALOT of welder to weld the thick cast iron of the rear end housing
Hopefully i wont have to weld the center of the rear housing just the tube ends
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Old 03-01-2009, 11:02 AM   #11
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Quote:
Originally Posted by jb1kanob View Post
Those look nice.

With respect to the 9 inch ends, i already have the rearend built and together with the axles and c clips. I would rather just stay with what I have since the axles are 35 spline, gundrilled and star flanged. I thought you have to order new axles with the 9 inch ends?

With the jig, I would make it myself.

I already have a 1 inch round tube brace welded on underneath from each coil over bracket (rear coil overs....its mini tubbed) that goes underneath the center.

Can i still do this?
yes but youll have to reuse the ends off your housing. unless somebody is makng them now. they werent years ago when i did mine and had to reuse what i had. and if youre not using a jig like from above id like to see it cause it needs to locate off the bearing housing
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Old 03-01-2009, 11:07 AM   #12
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Quote:
Originally Posted by jb1kanob View Post
Hopefully i wont have to weld the center of the rear housing just the tube ends
if you have something that needs 35 spline axles, you better be doin that BEFORE you do the shortening.and it better be braced too
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Old 03-01-2009, 11:39 AM   #13
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Was that $200 total? Seems like a good deal.
Yes just the labor cost cutting the rear down , welding on the 9" ends , welding the housing and installing the axle brace .
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Old 03-01-2009, 12:06 PM   #14
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yes but youll have to reuse the ends off your housing. unless somebody is makng them now. they werent years ago when i did mine and had to reuse what i had. and if youre not using a jig like from above id like to see it cause it needs to locate off the bearing housing

Ill have look ask around
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Old 03-01-2009, 12:07 PM   #15
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if you have something that needs 35 spline axles, you better be doin that BEFORE you do the shortening.and it better be braced too
The tubes are already welded to the center and the whole thing is braced.
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Old 03-01-2009, 12:08 PM   #16
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Yes just the labor cost cutting the rear down , welding on the 9" ends , welding the housing and installing the axle brace .

Ok, great. Now need to figure out if i can weld 9 inch ends on and still use these axles.
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Old 03-01-2009, 01:11 PM   #17
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Ok, great. Now need to figure out if i can weld 9 inch ends on and still use these axles.
sure you can, you just have to get the proper bearings, seals, and wedding rings..

Call up strange and they will hook u up
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Old 03-01-2009, 02:03 PM   #18
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sure you can, you just have to get the proper bearings, seals, and wedding rings..

Call up strange and they will hook u up
Good to know. Thank you

Anyway, back to the original, given that i can weld and setup a jig are there any other precautions I need to take to pull this off? Im thinking it wont be that difficult.
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Last edited by jb1kanob; 03-01-2009 at 02:09 PM.
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