live4soccer7

I had another thread going, but the topic changed quickly. I am creating this one so the title is more relevant to what is being discussed.

I have an 84 4runner and the next upgrade(s) are lockers and gears. I want to put a v6 third (recommended by a couple members) in the 4cyl axle. From what I have gathered so far this is what I will need:

ARB with the conversion bearings
v6 ring and pinion
v6 setup kit

Let me know if there is anything else that you see that would be required to make this happen.

Thanks for all the help everyone has provided over the last couple years. My truck would be no where near where it is now without it. In fact, I may not even have one because I wouldn't know how to work on it. ha ha.

waskillywabbit

iTrader: (-1)

You need V6 thirds

:wabbit2:

live4soccer7

Where can I pick em up? online or do I need to source them locally?

yotaman85

You can get them where ever you want. I think what wabbit was saying is the stuff you have listed won't do any good without the rest of the third member..

live4soccer7

excuse me for my ignorance on the topic, but is this what you are referring to?

http://wabfab.org/Differential-Housi...ypage.tpl.html

drew303

yup that's exactly what he's talking about. because the housing is designed to fit the v6 carrier and bearings.

drew303

I gotta ask are you planning to install all this yourself?

if so I applaud your desire to learn but it makes me nervous if you're unfamiliar with what a third member is, that's kind of like having the ambition to rebuild a motor without knowing what the block was.

anyway keep at it, but gear setups aren't a light matter and require skill and attention to critical details and an ARB isn't a novice installation. just words of caution don't take it personal.

live4soccer7

I'm not worried about it at the least. I have a keen eye for detail and have rebuilt the 20/22r hybrid in my truck right now and degreed in the cam etc.... You could have helped out with the question, which you failed to address. Care to explain, so I won't be in the dark?

I will be doing it myself and I guarantee it will be done right the first time. I am just learning all the different components to the system and what it will take to go from the 4cyl thirds to the v6, so I can cover all bases and get all the parts at one time instead of ordering many times or going to the yard on many occasions. Surely I could tear it down and look at all the components, but that means more down time which I don't really want.

JonnyBoy

Don't know what the "conversion bearings" are all about, unless that's an ARB required thing. In which case, I've just never researched or dealt with an ARB. So you know you need the third member(housing), gears, setup kit, and the ARB stuff. The 4 cyl axleshafts will work from the 4 cyl axle housing, and the v6 thirds themselves will bolt up to the 4 cyl axle housing. If I remember you're looking at getting 5.29's, right? May need to clearance the housing a little bit to fit the ring gear through to bolt up the third. As for setup, the best I could say is check out www.gearinstalls.com. Zuk has lots of pics showing good paint patterns, bad paint patterns, and explains alot of the mistakes people make setting up gears. I've found a local(ish) shop to me that if you have everything there parts wise, they charge $150 to set up the gears, so that's what I've done.

live4soccer7

Thanks, I appreciate it. That is exactly what I was asking. If by the "Third" everyone was referring to the housing. So that makes things much more clear now. I had even asked a vendor if I needed the v6 housing/third and he said NO.

Thank you very much for the clarification. I even posted a link to the housing asking if that what the reference was to.

ARB with the conversion bearings
v6 ring and pinion
v6 setup kit
v6 housing

dropzone

iTrader: (6)

the v-6 third (removable differential) is much stronger and will slider into a 4 cylinder axle housing (by that I mean the axle assembly).
not sure if Zuk (gearinstalls.com) is doing set ups again but well worth it have him do the set up for you.

live4soccer7

I think I will end up getting a pre-assembled unit as they are cheaper than to have to buy all components and then assemble. Should be a fairly painless install this way and another good learning experience to the workings of it as well. I'm sure I'll have to tear into them sometime in the future, if so I will learn how to set the gears at that time.

rokblok

iTrader: (1)

If you can source V6 thirds from a wrecking yard, you can prob do the install a little bit cheaper money-wise, plus you gain the experience of learning to do it yourself. So you could make money from your buddies rigs if you went that route...

ARB lockers can be found for $750-$900. Gears are $160-$180, depending on brand. Master install kit(comes with all the 3rd member bearings) is approx $100-$150. Used thirds can be found for $50-$100. An assembled unit with ARB is approx $1300-$1500. But that is also all new parts...not a used housing. You would still have to purchase the compressor for an ARB... and route your airlines to the differentials. Other lockers are, of course, cheaper.

If you decide on ARB, let someone else do it. The copper airline inside the diff rides close to the ring gear and is fairly fragile and has to be bent carefully. Wabbit has the built ARB on his site for $1370-ish...?(I dont know if this is 4cyl or V6 3rd member though) All new parts, professionally assembled. You just purchase and install a compressor, route the lines, and bolt in the new diff(s).

live4soccer7

Yeah, I agree. I think it could be done a little cheaper if a couple parts were found, but I think at the cost of having it done and all ready to go may be worth that $100 and the time taken to find the v6 third parts. This way the rig won't have much down time either.

Oatmeal

The V6 ring and pinion isn't any stronger than the 4 cyl's (they're both 8"), the extra strength cames from the V6 third's extra ribbing and bigger bearings.
In fact it's possible to install 4 cyl gears into a V6 housing by using the correct pinion bearings.

However, if I'm not mistaken, the V6 ARB is the same as the 4cyl version but, with the proper carrier (conversion) bearings.

So, unless you really have your heart set on a set of V6 thirds.....I doubt that you'll see any strength deficiencies with the 4 cyl thirds and you'll save a little money.

Hans

live4soccer7

If i'm buying the prebuilt gear setup and lockers then it is the same price or very little increase for the v6 version, so no reason to not.