Oem torsen LSD test (Need volunteers)

Suspension and other discussion

Postby Simba » Sat Feb 24, 2007 2:39 pm

Actually, that brings up another fairly easy method to check without popping the case open: Rent or borrow a borescope and stuff it in the drain or fill hole.
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Postby TomsGT4 » Fri Mar 02, 2007 11:19 pm

bridge47 wrote: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.


Ha ha anyone need to change their rear diff fluid?
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Postby CMS-GT4 » Sat Mar 17, 2007 4:50 pm

I just did my test. Am I to assume I have a clutch type lsd or a torsen?

When I turn the driveshaft both wheels spin the same way. And when I give resistance the turn the same way.

It is possible, that I have a torsen, cause my rear brakes are sort of sticking giving my rear wheels some resistance.

Either way, when I turn the driveshaft, both wheels turn in the same direction.

BTW: my door has this code.
-737/E150F = 5 speed manual with viscous coupling LSD.

I might not be completely convinced so I may need to look with a scope inside the diff housing or see if I can see the gears through the hole.
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Postby CMS-GT4 » Thu Mar 29, 2007 4:59 pm

I drained the rear diff fluid and tried looking inside. I could see one gear, but am unsure what the gear is.

I might have to rent a scope or something to get a better view. Can you even see the helical gears from the drain plug or are they further in?

here is a pic of the plug for reference.

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Postby CMS-GT4 » Thu Mar 29, 2007 6:29 pm

After looking at some photos I do not think you can see the torsen gears through the drain. See pic:

I am going to try and find another light that fits in the drain and try again though.

http://img27.imageshack.us/img27/6000/dsc000340ls.jpg
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Postby bridge47 » Fri Mar 30, 2007 8:08 am

Gears are visible at the fill hole. Use a small mirror (telescoping ones work best) and bright flashlight. Borescope not required unless you have access to one.
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Postby CMS-GT4 » Fri Mar 30, 2007 1:58 pm

Could not get a scope, but I bought a better flash light. its an open diff.

So I will be keeping my lsd. I need to see if toyota has a lsd install kit with all the clips etc...
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Postby Cody Mamak » Sat Mar 31, 2007 7:32 pm

Uhm...

SO, what if my car plate says:

model st185L-BLMVZG
c/tr/a/tm 202 GS10 - 767 E151F

chassis no. is JT164STJ500011860

Do I have a open or a TorSen??
:shrug:
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Postby etantshi » Sat Mar 31, 2007 9:44 pm

According to the code and previous information posted it should be a torsen, unlike mine. No plate, just a sticker: 737/E150F
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Postby RedCelicaTRD » Sat Mar 31, 2007 11:11 pm

EPC says it should be an LSD....
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Postby eddie_gt4 » Mon Apr 02, 2007 5:34 am

Cody Mamak wrote:(...)Do I have a open or a TorSen??
:shrug:


yes, you have a Torsen and a stronger gearbox (that was used in ST185 CS too :D )

p.s. Conan, another one pre-02-1992 EDM ST185 that was equiped with a E151F gearbox :twisted:
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Postby coyoteboy » Mon Apr 16, 2007 10:12 am

I'm a 150F 767, UK original car, and I believe all UK cars came with LSD and CS box? Although it now has a 205 box in it.
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Postby lumbercis » Mon Apr 16, 2007 7:02 pm

I don't think any USDM cars got a Torsen "on purpose" else the BGB would list information about them as it does for the open diffs. There may be a few cars that ended up with them by chance. Maybe they were originally destined for a different market, then a few orders from the U.S. came in, or maybe they ran out of open diffs, had a few extra torsens laying around, etc. Or maybe just a simple mistake since the exterior casings are pretty much identical. In any case, if you have a USDM car, I wouldn't get your hopes up about having a torsen, in all likelihood, the few that have them are flukes.

J.
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Postby CMS-GT4 » Mon Apr 16, 2007 7:04 pm

It was a dealer option. So, I think they were open standard, and its random if the new owner opted for the lsd or not.
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Postby Corey » Mon Apr 16, 2007 7:47 pm

So im assuming Torsen is better?
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