Limited Slip FAIL

I'm a little late in responding...but perhaps someone already explained this.

THe LSD uses clutch paks. THe clutch paks are (for a lack of better way to explain it) are together and the two wheels are 'locked in' together for as long as BOTH WHEELS are turning.

If one wheel has a certain amount of resitance - the LSD clutch paks will disengage (SLIP).

You put friction modifier in these diff so they WILL SLIP while turning or else you could damage the clutch paks (so to speak)

So....having one wheel on the ground IS NOT a way to test the LSD. THey've both gotta be spinning together.

 

That might be...but there is a point where the torque is too great and the clutch paks let go (torque overpowers pak/spring).

You still can't put one wheel on the ground and one up in the air to test the limited slip.

 

interesting read
Didn't someone say they were able to go up a hill with one rear wheel off the ground with a 2WD and an LSD? Unless I read it wrong. If I read it right, the LSD seems pretty good.
Anyone have any experience with the LSD "Ghetto locker", i.e. aplying the e-brake a little to keep the wheel thats in the air from spinning as much?

 

Is "clutch pack" the correct term ? I still don't see it in the part listing.

 

Good to know, thanks for your reply
Seems like everyone on here acts like if you have the LSD and not the e-locker you are totally f***ed if you try to go off road, lol. Maybe not...

 

the clutch pack is inside 41302

 

My last 4x4 was a manual shift (LSD rear), it was a very capable off road. While the e-locker makes for a much more capable off road vehicle, a 4x4 option (SRS5, TRD Sport, whatever) will get you through most of the stuff you will encounter. The e-locker is dang fine and if you really needed it you most likly would have purcased it.

I do not rock crawl or go mudding (not that you could not do those with the non e-locker 4x4's just gots to start small to fined what you and the vehicle can and cannot do) so I felt no need for the e-locker. what I do is week long fishing trips Cape Lookout NC x2 a year, and a few other fishing trips that a 2wd cannot do, not to mention the snow and ice in the winter

 

LOL, maybe you got cheated when you bought your tuck. Jack up both tires, then spin one wheel by hand. If the other wheel spins in the same direction, you've got an LSD diff. If the other wheel spins in the opposite direction, then you've got an open diff and need to go have a chat with whomever you purchased your truck from.

You can change how much traction the LSD gives by using different gear oil. Alot of folks who use LSD diffs in racing applicaitons will use Red Line

$30 75W 90 Synthetic Gear Lube - 1 Quart (Pack of 2)

75W 90 NS in their diffs to make the LSD lock up alot harder.

 

i did try putting the parking break on two notches while at idle speed. still no traction.

 

i actually did this when i was lifting the truck in the past, the wheels do spin in the opposite direction...LSD is present.

i should probably add that i recently changed the dif oil. i used mobile 1 synthetic LS oil. after changing it made a squeal while driving slowly. took it to the dealership and they said that even though i used LS oil, i still HAD to have the toyota additive put in. they drained some of the oil, replaced with the additive and the squeal went away.

i didn't really drive much between the oil change and the additive being put in, so i didn't think it just trashed my clutch packs in my rear end, maybe it did?

 

Pretty sure the tires should spin the same direction if you have an LSD.

Also, too much friction modifier would keep the clutch plates from working. Sounds like a definite possibility.

 

Wow reading all 7 pages of this thread makes me glad I have the newer 'brake created' TRAC traction control & Auto LSD!

 

Correct-- If the wheels spin opposite directions, this is pretty much a tell tale sign it is an open diff.

 

or it's a sign that you have a locker

 

Or it's a sign your lsd is not working the way it should--burned out clutch plates?

 

Not necessary true. even clutchpack LSD needs speed difference between wheels to engage. You would have to spin wheels fast ebough for clutch packs to engage. So if you are spinning wheels slowly your clutchpacks simply not getting enough speed to start working.