Traditional limited slip differential?

I think there is a bit of a misconception here. Low does not overpower the tires. It just multiplies the torque to higher levels at lower wheel speeds, which prevents slippage. It is opposite to what you both are thinking. 4hi will actually overpower the tires and cause spin. In the snow, posi in 4hi is not better than a locker in 4 low. it's the other way around.

The quote below is correct, 4hi gives more tire speed and maintains momentum through mud bogs.

 

You might be able to put a Supra LSD in (very bottom of page). I'm guessing not, but a lot of great info here

http://gearinstalls.com/bearing.htm

 

I may not have worded that the best way but I am speaking from 40 years of driving in Minnesota. If you are old enough, you may recall that nearly everything on the road in the 60's and 70's was rear wheel drive and you were in a winter climate, you were taught to put your automatic in 2nd gear to start out if you couldn't get traction in 1st. I have even seen some factory owner's manuals say that.

This statement: "It just multiplies the torque to higher levels at lower wheel speeds, which prevents slippage" does not make sense and seems to back up what I am saying.

 

Anyone tried sourcing a 2nd generation sport with the LSD and putting it on the third gen?

 

Good question, and for those that had a 2nd Gen with LSD, did you like the way it worked?

 

I've installed a few truetracs, had one on my truck before I put a locker in. It worked very well. So we'll that it would do its job before the auto lsd would have time to operate. There is also a similar model for the front diff as well. I installed one on a AWD 4runner and def a significant difference.

 

Here's the front. Nitro rebrands this one as their own.

https://www.speedmaster79.com/Toyot...line-TorqueWorm-LSD-Limited-Slip-Differential

 

You're right; he's wrong. Higher gear helps to prevent wheel spin and is the reason a lot of cars allowed you to start in 2nd gear. I remember some 4th gen F-Body's had a button you could push to do just that.

 

I was talking 4 lo. Sorry you are talking 2wd which has no low. I misunderstood and thought you were talking using 4wd in lo or hi.

 

4hi, a good set of snow tires (duratracs) with studs or chains should do the trick

been in some decently deep snow and the tacoma (really the tires) have done great

not sure you need to mess with the diff’s, again tires and studs should do ya

pics cuz why not

 

We are talking 4wd. I used the rear wheel drive cars as an example of getting better traction with higher gearing to kill some of the torque so you don't overpower the tires.

 

The second gen LSD was a clutch type and a few second gen users have said after 30-40k miles the clutches need to be replaced. I wish Wavetrac made a differential that fit as their system gives you traction even when a wheel lifts off the ground.

 

That looks like what I would be doing

Studs are awesome on ice but are no longer allowed on public roads in MN.

 

I’m pretty sure limited slip diffs exist for the 3rd gen, but I have seen very little discussion of them. I also live in Minnesota and my gut feel is that a limited slip diff wouldn’t be worth the cost. 4hi plus traction control works great on the road and when it doesn’t I switch to 4lo, ATRAC, and, when it gets super tough, the rear locker. You can go 30mph in 4lo comfortably.

The AutoLSD feature is also useful for getting out of parking spots, intersections, etc when engaging 4wd is not convenient.

 

All LSD functions are performed by the brake and abs systems and no 3rd gen truck comes with an actual LSD. For those of us without oem lockers it's a worthy consideration of doing lsd vs lockers.

 

I have said my whole life that trucks are worthless as trucks w/o a limited slip stock. Never had an occasion it produced a bad effect to have one.

I don't get it.

 

Did you intend to quote someone else?

 

Because I think most people prefer a selectable locking differential. Traction control fills in between open and locked and doesn’t have clutches that wear out.

 

Yup, this was quite common in older vehicles. My 1989 E350 motorhome will lock into 2nd gear if I place the shifter there ( it's an automatic ). It was for icy situations to reduce slip.

 

Sorry I misinterpreted what you had said, for some reason I thought you were trying to say that all 3rd gen's had lsd's :banghead: I will be happy to have a lsd over a selectable locker, it's wet and there are occasions now that I have to engage 4wd to avoid wheel spin and get up some of the hills around me. I figure if it results in 2 tires burning off I may at least have a little better luck before having to engage 4hi. The Truetrac and Torsen I have coming are both helical and don't have clutches to wear out.