Notching 60 axles lost thread

[vk7ybi]

Hi,
Somewhere, I think its in this subforum, theres a thread about notching 60 axles to fit into 40 or 70 series cruisers.. The thread has a shots detailing installed axle and the method of modifying the housing and substitution of the inner U bolt.. IIRC I've posted in the thread, and some of the parts in the photos are green.. I've tried search, tried using google to search the forum, but cant find it.. Anyone know what I'm talking about and able to point me to it?

TIA..

 

[vk7ybi]

I managed to find this IH8MUD.com - View Single Post - Expedition BJ74 Buildup but its only half of what I'm looking for..

 

[mookie]

https://forum.ih8mud.com/hardcore-corner/196544-notched-60-front-axles.html

 

[vk7ybi]

Thanks..

I already found that thread, it concentrates more on lengthening the housing.. I'm certain theres one concentrating more on the notching method..

 

[Isotel]

the lengthened short side puts your spring pad back in the stock place. One of the main reasons to do that mod is to take a 60 housing, lengthen the short side, thereby putting the diff in the same place as stock, and eliminating any need to outboard springs or build a custom inner u bolt on the PS..

 

[vk7ybi]

Yes, I understand why its done, but dont want to mess with extending housings and having custom inner axles built.. The front with the extension will be wider than the rear, so I'd have to find a solution to that too..

 

[vk7ybi]

I found this IH8MUD.com - View Single Post - 60 diffs under 73

I still think I'm missing something though..

 

[mookie]

why don't you just put the axles under your rig as is and outboard the leafsprings? a lot less trouble than modifying axle housings, ordering custom inner axles etc, plus you'll get a more stable ride

 

[vk7ybi]

I want the SOA conversion to be fully reversible.. SOA is illegal in this state, so I want to be able to return it to stock configuration with minimal effort.. Outboarding springs is not easily reversible..

Another advantage doing it the way I propose is that I can put the conversion under any of my other 40s..

I have some 60 housings here that I got for nothing, so I want to use them..

 

[kling-on]

FJ40 SOA Kit using FJ60 axles, With or W/O Reversal [FJ40SOA2] - $470.00


heres a kit to do it ... the FJ60 SOA kit is bling I just got it to install on my Brown60

 

[slickrock]

It sounds like you want the best of both worlds. Why not install spring perches on top of the axle for SOA and below for SUA. Then it is a matter of removing the ubolts and putting the axle on the SUA perches. This would get you through inspections.

You will need some degree shims when going back SUA, but that would be easy to do. I widened my frame mounts for a 60 series axle in my 40 and it is very simple especially with the balistic mounts. You could use the same mount for the SUA configureation on the passenger side as far as I would guess.

 

[vk7ybi]

I have a spare set of 60 axles. I have a spare set of flat 40 springs. I have an ARB locker. I have a Lunchbox locker. I have some 35 and 37 inch wheels. I have some 4.88 gears. I have some V6 calipers and other goodies.

The plan is to build a SOA setup with all those parts that will swap in with minor effort, into any of my 3 40s. I will build a bolt in cross member for the anti wrap bar.

To achieve this I want to not have to outboard the springs, as when the rig isnt SOA it will be roadgoing SUA.

The only solution I can see to make this work is to notch the housing.

The other less desirable option is to run IFS hubs on a 40 housing to bring the front out to match the rear, but this causes steering problems that I dont need.

I do want the best of both worlds, and I'll do it with spare axles..

 

[handcannon]

The other less desirable option is to run IFS hubs on a 40 housing to bring the front out to match the rear, but this causes steering problems that I dont need.

..

Could you please explain what these problems are? I have been planning to run IFS wheel hubs and this is the first I've heard of problems connected with running them. I need to be fully informed before this mod.

Thanks
Don

 

[vk7ybi]

Essentially running IFS hubs has the same effect as running wheel spacers.. The wheel bearings are in the same place, but the wheel centre has moved relative to them increasing load and wear rate. Moving the wheel out also increases the scrub radius, and then therefore the load on those 4 studs that transfer steering effort from the steering arm to the swivel housing..

I can see running IFS hubs potentially causing problems, particularly with large tyres.. No doubt people have done this mod and not had any trouble.

Doing this has advantages too though, I have some V6 calipers to go on, so I wouldnt need to clearance anything to make them fit..

 

[handcannon]

vk7ybi

Thanks for the reply. I had the offset "wheel spacer" syndrome and the needed extra clearance for the larger calipers in mind but hadn't thought about the extra load on the knuckle studs or the scrub radius.
I will be checking to see if there are some ARP replacement studs available.

Don

 

[vk7ybi]

There are Magnum knuckle studs available that are made by or use ARP material.. One could use a 5th stud mod or 6 stud knuckles and arms..

 

[Deny]

FJ40 SOA Kit using FJ60 axles, With or W/O Reversal [FJ40SOA2] - $470.00


heres a kit to do it ... the FJ60 SOA kit is bling I just got it to install on my Brown60

Has anyone done this kit, won't you still have to notch the axle though?

 

[shelfboy1]

dont know if this will help but on a couple of studebaker 6x6s i have the front axles are notched on the passenger side.the housing is cut out and a 3/4 " steel plate was welded in with threaded holes .a top plate went over the spring and they are bolted together .should be basicly the same with a 60 housing been holding up on thes trucks for 65 years .good luck

 

[vk7ybi]

Pics?