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Cameron Stanley
Tinkerer
VIC
TT

Posts: 29
Reg: 09-2007

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Saturday, October 20, 2007 - 09:20 pm, by:  Cameron Stanley (Camskea) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Still trying to establish exactly what my new TT has and does not. it has LSD, but how do I tell if its a Torsen or not?
Thanks.
David Vaughan
Goo Roo
ACT
V8 Ltd manual

Posts: 3474
Reg: 07-2005

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Sunday, October 21, 2007 - 06:27 am, by:  David Vaughan (Davidv) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Does it have LSD because the chassis plate says so? If so, it is Torsen. If not, it is not readily divined.
Blake Gloyn
TryHard
manawatu
soarer JZZ30 TT

Posts: 167
Reg: 02-2006

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Sunday, October 21, 2007 - 06:33 am, by:  Blake Gloyn (Blakenz) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

put one rear wheel in really slippery mud.If you can drive away then you have an aftermarket LSD, if you can't, then you have either an open wheeler or a torsen LSD.( a torsen wont lock up if one wheel has zero traction.I promise-it is a proven fact)). You have already said that it has a lsd.. I'm guessing you did a quick burnout to confirm.
David Vaughan
Goo Roo
ACT
V8 Ltd manual

Posts: 3475
Reg: 07-2005

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Sunday, October 21, 2007 - 10:37 am, by:  David Vaughan (Davidv) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

It does have to be zero traction though. Any traction at all will be multiplied to the other wheel which can make this test difficult. This is a function of the Torsen design. "Torsen" really does stand for "torque-sensing".
Cameron Stanley
Tinkerer
VIC
TT

Posts: 30
Reg: 09-2007

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Sunday, October 21, 2007 - 11:19 am, by:  Cameron Stanley (Camskea) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

not really burn outs as such, tyres are too expensive, waiting to get some cheap stock rims first (Anyone selling any?) but it kicks out around corners like an lsd and takes off from the lights drifting out like an lsd.
What should I look for on the chassis plate? Cheers.
David Vaughan
Goo Roo
ACT
V8 Ltd manual

Posts: 3476
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Sunday, October 21, 2007 - 03:21 pm, by:  David Vaughan (Davidv) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Oh dear! Dare I mention Search...? Did anyone say that?

Since I am being fantastically patient today, look for the line "Trans/Axle" and see if the group of numbers ends in "A" or "B". Tell us the answer while we keep you in suspense over which means what, or you can search and know for yourself.
Cameron Stanley
Tinkerer
VIC
TT

Posts: 31
Reg: 09-2007

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Sunday, October 21, 2007 - 04:43 pm, by:  Cameron Stanley (Camskea) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

the numbers end in A, from my search this means its not an lsd i believe.
Looks like someone changed it somewhere along the line, coz as I said, it kicks like lsd.
David Vaughan
Goo Roo
ACT
V8 Ltd manual

Posts: 3477
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Sunday, October 21, 2007 - 05:20 pm, by:  David Vaughan (Davidv) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Dirt and tarmac for a wheel each is the simplest test to confirm LSD -- a bit of traction for each wheel but much more for one of them.

When you confirm LSD, it looks like you need to try Blake's test as best you can to find out if it is Torsen or mechanical.

The only other convincing way that I know to find out which type is to have a look at the innards.
Dave Cazes
Tinkerer
sa
tt

Posts: 28
Reg: 08-2007

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Sunday, October 21, 2007 - 07:45 pm, by:  Dave Cazes (Cazman) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

all your ideads are great, really. but you all missed the easiest way to tell.

Jack your car up. turn 1 wheel while its in the air. what does the other do? if it spins the same direction its an lsd of some sort. if they spin opposite directions its on open wheeler.
Brian Timms
DieHard
New South Wales
TT Soarer Goodness.

Posts: 673
Reg: 12-2006

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Sunday, October 21, 2007 - 07:57 pm, by:  Brian Timms (Turbo_brian) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)


Blake Gloyn wrote on Sunday, October 21, 2007 - 06:33 am:

I'm guessing you did a quick burnout to confirm.




I tried this before checking my chassis plate to see what I have, and I left a nice dark 2 wheeler out of my driveway, and thought "sweet, it's a Torsen or at least LSD".

Anyway, it turns out I really have an open wheeler, and it was just luck that both rear brakes let go equally and she slide sideways and smoked up nicely...

B.
David Vaughan
Goo Roo
ACT
V8 Ltd manual

Posts: 3478
Reg: 07-2005

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Sunday, October 21, 2007 - 08:00 pm, by:  David Vaughan (Davidv) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)


quote:

you all missed the easiest way to tell.

Jack your car up. turn 1 wheel while its in the air. what does the other do? if it spins the same direction its an lsd of some sort. if they spin opposite directions its on open wheeler.


To pick a Torsen as an LSD, that is just rubbish. Re-read this thread and do some searching if you still do not get it.

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