Oem torsen LSD test (Need volunteers)

Suspension and other discussion

Postby maxaud » Mon Feb 19, 2007 6:04 pm

I'll give it a try. Only the rear will need to be lifted up right?
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Postby CMS-GT4 » Mon Feb 19, 2007 6:18 pm

You can turn the rear independantly of the front, it will be harder though.
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Postby CMS-GT4 » Tue Feb 20, 2007 1:38 am

This old link has this info about door codes and lsds.

There are ST185 with rear Torsen differential and versions with LSD = Limited Slip Differential.
Codes:

E151F-767 = 5 speed manual with rear Torsen differential.
or
-737/E150F = 5 speed manual with viscous coupling LSD.


Those that know their car came with or without lsd, check the 3 digital code. This might help as well.
Coldiron
92 st185 (205 swap) | 03 350Z Track (sold) | 13 Pilot | 17 Mazda3
www.noritoy.com | noritoy.deviantart.com | http://www.alltrac.net/phpBB2/viewtopic.php?f=44&t=19891
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Postby eddie_gt4 » Tue Feb 20, 2007 8:21 am

CMS-GT4 wrote:This old link has this info about door codes and lsds.

There are ST185 with rear Torsen differential and versions with LSD = Limited Slip Differential.
Codes:

E151F-767 = 5 speed manual with rear Torsen differential.
or
-737/E150F = 5 speed manual with viscous coupling LSD.


Those that know their car came with or without lsd, check the 3 digital code. This might help as well.


my Celica is equiped with a E151F tranny & Torsen (767) :smokes:

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Postby alltracman78 » Wed Feb 21, 2007 11:17 am

First off, I REALLY wish a mod would splice all these rear diff threads to one.
Or at least keep them in the same forum....
Anyways

CMS-GT4 wrote:This old link has this info about door codes and lsds.

There are ST185 with rear Torsen differential and versions with LSD = Limited Slip Differential.
Codes:

E151F-767 = 5 speed manual with rear Torsen differential.
or
-737/E150F = 5 speed manual with viscous coupling LSD.


Those that know their car came with or without lsd, check the 3 digital code. This might help as well.


Where is this link?
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Postby eddie_gt4 » Wed Feb 21, 2007 11:29 am

alltracman78 wrote: (...) Where is this link?


as you've just said - it's in other rear diff thread :D

but ok, I'm posting that link again: http://www.celica.dds.nl/en/celihist.htm
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Postby Simba » Wed Feb 21, 2007 7:21 pm

CMS-GT4 wrote:There are ST185 with rear Torsen differential and versions with LSD = Limited Slip Differential.
Codes:

E151F-767 = 5 speed manual with rear Torsen differential.
or
-737/E150F = 5 speed manual with viscous coupling LSD.


This is very strange. To my knowledge, there was never a rear viscous LSD for the AT. Hence, the terminology in that list is odd.

Anyway, I have a 737/E150F code with a torsen rear LSD.

Lots of fast, loud things.
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Postby CMS-GT4 » Wed Feb 21, 2007 7:54 pm

That terminalogy is bad. It confused me at first a couple of years ago.

There is no rear VC lsd. It just refers to center VC. Its stupid for totota to state it that way since the 151 also has a center VC.

The only logic I can see behind it was to note after the early 165 models of a center VC.
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Postby eddie_gt4 » Thu Feb 22, 2007 6:05 am

Simba wrote: (...) Anyway, I have a 737/E150F code with a torsen rear LSD.


Simba, may I ask what makes you think that your Torsen is an OEM thing and wasn't, eg., installed by previous owner?

btw, that list is not talking about "rear viscous LSD" (as you've said), it's talking about "viscous coupling LSD"... :|
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Postby Simba » Thu Feb 22, 2007 3:29 pm

eddie_gt4 wrote:Simba, may I ask what makes you think that your Torsen is an OEM thing and wasn't, eg., installed by previous owner?


As far as I know, my diff was never opened prior to me doing it. No silicone, factory gasket, etc.

I suppose it's possible someone tossed a diff in there and just did an especially good job of it, but considering all the horrible crap the previous owner did to my car, I kinda doubt he found mechanical religion before doing the diff.

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Postby CMS-GT4 » Fri Feb 23, 2007 1:55 pm

Anyone with a known diff get around to trying the test yet?
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92 st185 (205 swap) | 03 350Z Track (sold) | 13 Pilot | 17 Mazda3
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Postby Conan » Fri Feb 23, 2007 4:27 pm

CMS-GT4 wrote:Anyone with a known diff get around to trying the test yet?

Tomorrow, hopefully...
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Postby Simba » Fri Feb 23, 2007 9:08 pm

CMS-GT4 wrote:Anyone with a known diff get around to trying the test yet?


I tried mine (known LSD) for giggles.

Spinning the input shaft while holding one wheel, then applying some resistance to the spinning wheel immediate forces the held wheel to move in the same direction. It's very noticable and not something you're likely to mistake, as even when spinning the driveshaft by hand, the force of the torque transfer is enough to yank the stationary wheel out of your hand.

The open diff shouldn't do this, so, it's a pretty good test.

Lots of fast, loud things.
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Postby CMS-GT4 » Fri Feb 23, 2007 10:13 pm

I will try it as well in the morning. I do not know what I have, but we will findout the results of how it reacts.

I am glad to hear this works. Someone want to test the reaction on an open diff as well.
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92 st185 (205 swap) | 03 350Z Track (sold) | 13 Pilot | 17 Mazda3
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Postby bridge47 » Sat Feb 24, 2007 12:13 pm

Easy enough, I once removed my diff plug and using a bright flashlight
was able to see the spider gears on my open diff 93.
I believe the Torsen has helical gears that should be visible as well. You
have to jack up the rear of car and do a little wheel turning to get a good look.
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