Wanted 81+ fj40 bare rear axle housing

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Very rare and expensive Cruiserparts.net has one, $1,200 but it is a complete axle. Has anyone ever tried to adapt FJ60 backing plates to an earlier rear axle?
 
I know it's a rare bit. I had one years ago and sold it to a guy in ga for peanuts. :(

I'm wanting to put a split case in my 73. I'd like to use rear drums with the parking brake ala 60/62. I have several complete 60 rear axles.

How about narrowing a 60 housing? Has anyone pulled that off?
 
I've contemplated that option as well. Can be done on an axle jig but I'd highly recommend using an inner sleeve and a series of plug welds. The short side is the same so you'd only have to narrow the driver side by about 2". I have a pretty good idea of how to make it work right and even be able to supply a "kit" for the DIY guys out there.

Wish I had more R&D time to tinker with projects like this one ......

Georg @ Valley Hybrids
 
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Have you thought about using a 7x series rear axle housing (FF)? It is narrower than the 60 rear axle housing. IIRC, it is a slight bit longer than the 40 series but a much better fit and already set up for leaf springs?

Just an idea.
 
If Don did the welding, it'd be the strongest thing on the truck!
 
I have used Georg's spring perch kit on a 60 rear axle to put a full width 60 axle under my 40. It worked very well! I actually liked the extra width in function as well as form. Those are 33/12.50's mounted on 8" wide rims. The axle puts about 1.50" extra width on each side of the body.

New lights2.webpNew spare 1.webprear upgrade 3.webp
 
I talked to my buddy Dave ( 4+ products ) about narrowing the 60-series housings tonight. We both agreed that my idea should work so we plan on pursuing it right after New Years. I'll start a thread in the 40 forum when I have something to report.

Georg @ Valley Hybrids
 
Michael B said:
I have used Georg's spring perch kit on a 60 rear axle to put a full width 60 axle under my 40. It worked very well! I actually liked the extra width in function as well as form. Those are 33/12.50's mounted on 8" wide rims. The axle puts about 1.50" extra width on each side of the body.

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I considering this, but was concerned about my 31s hitting the fenders. (stock suspension) I also wasn't sure how it would track with the rear axle being wider than the front. (ih8spacers)

orangefj45 said:
I talked to my buddy Dave ( 4+ products ) about narrowing the 60-series housings tonight. We both agreed that my idea should work so we plan on pursuing it right after New Years. I'll start a thread in the 40 forum when I have something to report.

Georg @ Valley Hybrids
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Buyer #1 lined up. Need my core?
 
orangefj45 said:
I talked to my buddy Dave ( 4+ products ) about narrowing the 60-series housings tonight. We both agreed that my idea should work so we plan on pursuing it right after New Years. I'll start a thread in the 40 forum when I have something to report.

Georg @ Valley Hybrids
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This is gonna be big. :clap:
 
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I found a NHRA chassis builder with an axle jig. He said it would be no problem to narrow 60 rear housings 2" on the long side and install 40 perches. Today, I dropped the 2x 60 rears + a 40 housing for reference. Once I get mine installed and tested, I'll have the other available for sale.
 
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Funny you should mention that. We cut the first housing apart on Monday. Our neighbor has an axle jig also but we're waiting for a machinist buddy to make us a pair of pucks to make sure the housings are perfectly concentric. And we're building a jig to make sure the perches end up exactly where they need to be.

Georg @ Valley Hybrids
 
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