Free wheeling hubs?

I was not implying that they were "weak" in general. I was implying that the selectable hubs (be they manual or automatic hubs) were weaker by design than the inner, more expensive parts of the drivetrain.

 

Yes, a few odds and ends, bearings, clips, nuts, spacers. The primary concern, though, is that the spindle itself is the same.

 

Nope. I am thinking about the same setup 4runners, Sequoia and LC has where transfer case has Torsen inside. That allows for 2wd <> AWD/4HI/4L and if you do the mod you can get AWD in 4L.
In Winter if the road is completely covered by snow yeah 4HI is not much of the issue. But when roads get mixture of ice/clean asphalt it becomes hassle to switch 4HI <>2wd constantly. VSC will not handle our hills thats simple. I live in mountain area so either you goign down or up and you are truning in the process. VSC/AutoLSD are all useless in those conditions. Since you need 4x4 to climb hills.

It would but finding right transfer case for decent price has proven difficult.
Those cases gets their motors removed and even with out the motors still junkyards want $600

Yep CV's are bigger diameter so are the wheel bearings and hubs.
Basicly you need whole front LC 100 suspension (not cheap) 100's had exact same CV's as 2gens now have so with little work that should fit in our dif. You not goign to be able to use LC front diff because its pass side drop. Spindles should bolt to our suspension too.
Problem is finding parts as those things are not cheap. also 100 have same ABS sensors as our non VSC trucks (that should be Digital vs Analog.) so rings on CV's and LC hubs should be giving the same reading.
But thats in theory and unless somebody collects all the parts and does the work nobody will know for sure.

 

I assume you meant the hub itself. Yes, the hub itself is the same, but the spindle inner diameters are different between 1st and second. You most probably will be looking at not being able to find a mainline bearing that will both match the hub of the 1st gen (remember the hub of the first gen has a larger shaft) and the spindle/hub assembly of the 2nd gen, which has a different inner diameter than the 1st gen.

 

Bearing diameter is bigger on 2gen because CV is bigger too. Thats why there is no room on 2gen wheel hub to put the ring for manual hubs. If there was room you could grind the splines toss needle bearing from solid axle and probably get manual hub that way.

 

Im not saying first to second gen. I'm saying first gen ADD and first gen manual, of the same year, had the same spindles -- identical, and the spindle didnt change until 2005, yes, I acknowledge that the parts on 2000 obviously wont bolt onto 2005+ without modification.

But thing is, as far as the bearings go, one need not be restricted to those supplied by OEM. As far as bearings go, anywhere there is a bearing, there is the opportunity to adapt different parts to each other through selection of different bearings and/or spacers.

 

OK, I am incorrect on one part of my information. Here I am at my shop and I completely forgot that I have the old bearings from two different jobs. Here are the facts. Then we can discuss if it can be done.

The first photo is of a second gen hub and bearing assembly. It includes the hub, the bearing, as well as the bolt-on race. This entire unit the bolts onto the second generation Tacoma.





The next photo is of a first generation hub bearing, alone.






This next one is of the 1st gen bearing placed on top of the race assembly of a second gen. Note that the outer diameter of the bearing is larger than the race assembly of the 2nd gen. This means that the 1st gen bearing will NOT install into the 2nd gen race.







This is where I was incorrect. The last photo is taken from the CV shaft point of view. It DOES appear that the diameter of the inner bearings on both the 1st and 2nd gen is the same (I don't have a micrometer to measure this, and I don't have another hub from a 2nd gen to see if it presses in properly) This could only be tested by a micrometer, or a press-fit test.








What this indicates is that you MIGHT be able to press in the hub from a 1st gen, selectable into a second gen bearing assembly. This leads me to believe that you can now reduce the parts list for this conversion to the following:

bearing from second gen (don't try reusing a bearing from a hub....just don't)
selectable hub from 1st gen.
selector itself
CV shaft

 

My bad. I was thinking you were asking if a 1st gen selectable would work in a 2nd gen non-selectable. My misunderstanding.

You would still, however, need the following to make it work:
Bearing (OEM replacement or equivalent)
selectable hub
selector
CV shaft (due to spline count)

 

Thank you very much for those pictures, this is definitely starting to get encouraging again.

I'm thinking that I'm going to have to hit the junk yards and see if I can get my hands on some parts. See what I can fit together with what.

 

How can you replace the CV shaft with one of a different spline count, without also replacing the corresponding hub within the front differential, or alternatively the entire differential itself?

 

Ah, it took a little while for it to click in that LC='Land Cruiser', thanks, I will look into those.

 

If you look at the entire list, that is what we are discussing changing out:
CV shaft
Hub
bearing
selector

I also mentioned that you may need a custom CV shaft. I believe that the CV shafts themselves have the same diameter shaft. This means that you can actually change out the outer joint to match the selectable hub.

 

This

Very interesting thread, curious to see where this goes.

 

did anything ever come from this?

 

@Sideline Hero

 

Easily speculated, but still no Execution. They were on the right track.