Tightening up the factory LSD

[WCD]

I read some complaints about the factory LSD.
From the factory, these come with a mild, or "nonaggressive" setup of the clutchpack. One of the ways you can tighten that LSD up is by shimming the inside of it.

This is what the unit looks like.

Not sure how many miles this one had on it, but as you can see the clutches still look brand new.

More inside pics.

You can shim the inside in one of two ways. The first way would be to put a shim or two (anywhere from .010"-.030") on top of the center spring. This will have the effect of preloading the spring a little more than it is already.

The second, and more common way, would be to add a shim or two under or within the clutchpack itself. But use the same rule above and don't add too much, or you'll end up with a spool on your hands. Again, this increases preload and is a common way people use to tighten Eaton LSD's for older Chevy/GM vehicles.

 

[WCD]

When going this route, it is a good idea to add equal thickness to both sides. :top:

 

[Shanes56]

AWESOME write up man

 

[boneman840]

WCD I sent you a lengthy email with a few questions hope you don't mind.Great detailed pics by the way:top::top:

 

[WCD]

WCD I sent you a lengthy email with a few questions hope you don't mind.Great detailed pics by the way:top::top:

Nope, not at all. I'm a wrench turner anyway...

 

[eXuser01]

nice right up is this your lsd...if so did you notice a diff

 

[WCD]

Not mine. This one had been laying around the shop for awhile. I'm guessing it was slipping, but those clutches have plenty of fiber left on them so it would be a good candidate for it.
Mine hooks pretty good right now, but if it starts slipping too much, I'll shim it up and let you know. :top:
Or I'll just put a true trac in it.
By the way, the same company that makes the TRD blower also makes our LSD. The Tacoma LSD is an Eaton positraction unit.

 

[LSKustumz]

AWESOME STUFF!! I had the old Kazuma TRD one in my SR and loved it, it was definitely more aggressive than whats in the XR. Now I now how to do it!!

Make it a sticky in HOW-TO!!

 

[WCD]

AWESOME STUFF!! I had the old Kazuma TRD one in my SR and loved it, it was definitely more aggressive than whats in the XR. Now I now how to do it!!

Make it a sticky in HOW-TO!!

I've seen those Kazumas! They make some pretty trick stuff for Nissans as well. All the Japanese writing on the box made you know it came straight from Japan.

 

[overdriven]

I was thinking about doing something about the LSD, but didn't know if we had a clutch type or viscous. Glad it's clutch type, I can just add shims instead of swapping plates around. Great tip, definitely sticky this.

 

[emo_X]

great stuff mine slips i hate it but i am still in warrenty i will just get them to change then i will shim it:top:

 

[DallasCowboys]

Very interesting. Thanks. :top:

 

[Matt's06]

Where can we find the right shims? Are they the same for all Eaton Positracs?

 

[xr-gte002]

thats ****in awesome man. i wasnt sure what the LSDs i nour trucks looked like....

 

[wshsbears]

will the dealer swap ur differentials if u have traction bars and blocks in the rear?

 

[WCD]

Where can we find the right shims? Are they the same for all Eaton Positracs?

Is there a differential shop in your area?
If there is, tell them you want a shim kit that will work with your Tacoma posi. If they say they don't make one, bring one of your case halves with you and tell them you want an Eaton shim kit with ID/OD's that will work with your case. The shims you want are like the ones in the 7th photo down.

will the dealer swap ur differentials if u have traction bars and blocks in the rear?

Are you talking about for a gear swap?

 

[wshsbears]

Are you talking about for a gear swap?

no, to get a new one under warranty.. then shim it considering mine's probably half gone already anyways..

 

[WCD]

no, to get a new one under warranty.. then shim it considering mine's probably half gone already anyways..

I don't think they would. They might consider it a wear item since it's clutch driven.
But it would't hurt to ask them about that.

 

[Bobby B]

COOOOOL!:top:

 

[wshsbears]

I don't think they would. They might consider it a wear item since it's clutch driven.
But it would't hurt to ask them about that.

well it would be a wear item unless i tell them to turn right and gun it just to have 1 wheel spin instead of both.. i know a few people at the dealer i normally go to so i'll see what i can work out..