justin_4runner

so today i picked up the supra lsd to install into the 4runner, here are some pics that i took of dismantling the diff from the supra. will pull the 4runner diff next week or so and get it installed.

Dras16

How exactly are you doing this? Will the gears and LSD bolt into the 4runner thirdmember?

tried4x2signN

Not gears, the case... Which holds the LSD workings.

xxxtreme22r

More important question you putting it in the rear or the front?

Anyway for the v6 rear:

http://www.gearinstalls.com/supralsd.htm

http://www.gearinstalls.com/supralsd2.htm

justin_4runner

im putting it into the rear, its an 8in

Dras16

how much did that supra rear end cost you?

justin_4runner

everywhere i called wanted 400 or so,(wrecking yards) i found this one off craigslist for 180 but got the guy to sell it to me for 150.

Dras16

Thats a good deal!

Mandy Tuning

will this mod work on a 87 turbo runner?

justin_4runner

not sure if the 3rds are the same set up or not.

Stuwy123

iTrader: (1)

I swapped in a LSD from an 86 Supra into my V6 4.88 diff a couple months ago and stuck it into the truck about a month ago.
Works great.
I used the instructions on zuk's gearinstalls website and the service manual to properly to setup the backlash. Really simple.
I made a handy little tool to easily torque up the adjuster wheels. Just a 3 inch piece of flat plate with two 1/4" socket head cap screws tapped into it (had to grind them to find in the adjuster wheel slots), and a bigger bolt tapped and double nutted in the center of it (to torque easily).

I had to grind down the bit of the adjuster wheels that stuck out so it would fit in the axle. Zuk's website talks about it.

I also put in a 1/8" thick washer in with the center spring to bump up the spring tension. I don't think the supra LSD was designed to keep two 33"x12.5" tires spinning at the same time, the extra spring tension will help.

Follow the instructions on Zuk's website and you'll be find. It's a pretty easy install. Make sure you have a good puller to get the bearings off the diffs. I had to put a clamp on the jaws of my puller to stop them from spreading. DO NOT PULL ON THE BEARING CAGE!

tlrskunk

Maybe I will look for a Supra LSD to put in my front axle on my SAS 4runner... or maybe just Weld it up as well. My Birfields are going to LOVE me. 5.29's 35's and stock Birfields. they will last right?

Stuwy123

iTrader: (1)

I don't think an LSD will be as hard on the front as a locker.
I just wouldn't want to run it in any sort of icy or snowy conditions, ever.
If there's enough spring tension, it'll act like a locker on ice. No steering or turning.

tlrskunk

The trick with that is leave your driver side hub unlocked until you need it. hop out engage drive on.

Stuwy123

iTrader: (1)

I highly doubt that you have much for LSD clutch plates left.
Keep them both unlocked or you'll wear the clutch plates out.
It acts like a locker until it breaks loose then it acts like an open diff.
If you have one side open and one side locked, it'll try to spin the driveshaft all the time.
It might be alright but what's the point of only unlocking one hub?

my-4x4

I think hes saying leave one hub unlocked so your front end will act as an open...if you had a locker (during the snow/ice)

tlrskunk

I was not talking about with the LSD I was talking about running with a welded front or a locker.
and why would you run with your hubs locked in if you aren't in 4wd(on the road)? which means if you are in 4wd your front shaft is spinning anyways..

exactly. it's not a true open but it works. Heep guys do it with the Vacuum disconnect axles. they will weld the Front spiders then use a manual disconnect. with the Manual disconnect disengaged the pass front tire just rolls along but with it engaged both front tires will spin. it is a sorta poor mans selectable locker. similar to what i was saying if you are running a welded front diff with only one hub locked in. it's ghetto but it works.

Mandy Tuning

well,i find one for $60,will remove it tomorrow at the morning,have read that turbo runners rear end are the same as v6.hope it works.

Stuwy123

iTrader: (1)

Just count the number of fins on the diff.
3 ribs - 4 cyl.
4 ribs - V6

Yes, the V6 and Turbo diff's are the same, according the toyota diff bible.
http://home.4x4wire.com/erik/diffs/

Mandy Tuning

finally remove the rear end from the supra,wow,this diff is new,but my runner is in pieces right now,engine apart,complete front suspension and brake system, in the floor, and install a few turbo mods will post later.