Do I have LSD? (pictures inside)

4962 Views 21 Replies 8 Participants Last post by torn81, Feb 11, 2006

AndrewMcG

Discussion Starter · Feb 6, 2006

2

No, I didn't do a burnout and see two stripes

I just bought a 91 NA(I know what forum Im in, you guys have more LSD experience than NA people) and dropped the motor. I've seen LSD tranny's before and this looks just like it, but I had no idea 91 NA's had that option? They are definitely NA hubs and axles on the car, so the tranny is definitely an NA tranny. Can anybody shed light on this for me? Look at what I found when I took out the axles.

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Turbo_PePe

· #2 · Feb 6, 2006

i can see the famous steel bar ...

looks like you have a lsd tranny

Turbo_PePe

· #3 · Feb 6, 2006

btw ... i can remember my buddy had a NA tranny lying around which had the steel bar to..... MMH .. not sure anymore

billwot

· #4 · Feb 6, 2006

The bar identifies aN OEM LSD-equipped E153 (turbo) tranny.

There was never OEM LSD in the S54 (5sfe) tranny.

Whatever you have, it is NOT an OEM LSD S54 tranny.

bill

bufferdan

· #5 · Feb 6, 2006

I have pulled three 5sfe celica trannys and all of them had that same bar.

billwot

· #6 · Feb 6, 2006

That's correct. The bar is present in all S54 trannies (which have an open differential) , but in the E153 tranny, the bar is only present in the LSD-equipped units.

bill

patR1

· #7 · Feb 9, 2006

i just bought an S54 tranny from a 1996 mr3 3sge, the lady did a conversion and wanted to sell her n/a tranny, i picked this sucker up with the best price tag of 200AU together with the shafts , not until i came home and to my surprise i see its a lsd tranny, what a day

my question is: i am doing a 3sgte conversion , is the lsd tranny stronger then a non lsd tranny? so are they the same strength and the only difference is the wheel power distribution?

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AndrewMcG

Discussion Starter · #8 · Feb 9, 2006

PatR1, did you not read all the posts? You do NOT have LSD.

billwot

· #9 · Feb 9, 2006

"The bar is present in all S54 trannies (which have an open differential) , but in the E153 tranny, the bar is only present in the LSD-equipped units."

Repeat after me: There ain't no OEM LSD S54 trannies.

All S54 trannies have the bar. NO S54 trannies are lsd.

1) Only the E153 (turbo) trannies were available with LSD.

2) It was an option offerred on '93+ E153 trannies

3) It was NEVER available on the S54 tranny.

bill

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patR1

· #10 · Feb 9, 2006

oh and i was so happy, dam ......
my current trany has no bar in it , the tranny is a s54 as well of a 973sge,
is that a closed differentails one?

which one is better, with bar or with out bar?

thanks for the wake up call

billwot

· #11 · Feb 9, 2006

"which one is better, with bar or with out bar?"

The only thing I am sure of regarding the 5sfe/Sfr MR2 is it was never available with LSD!

And I didn't think the 3sge was attached to the S54?

bill

patR1

· #12 · Feb 9, 2006 (Edited)

2

"And I didn't think the 3sge was attached to the S54?"
then what gearbox do 3sge have mate?
as i have 2 gearboxes, both of a 3sge 1997 and a 1996 ,
and i am sure they are the S54 gearboxes.

pics of the gearbox with the bar, the one with outbar looks the same.

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lagos

· #13 · Feb 9, 2006

my s54 tranny in my swaped celica has the same bar... and i can tell you for sure, that it is NOT lsd.

patR1

· #14 · Feb 9, 2006

anyway which s54 gearbox is better one with bar(which have an open differential )or one with out?

billwot

· #15 · Feb 9, 2006

Well, like I said:

"The only thing I am sure of regarding the 5sfe/S54 MR2 is it was never available with LSD!"

bill

AndrewMcG

Discussion Starter · #16 · Feb 9, 2006

Does anybody have any idea why that bar is there in the S54 tranny?

Driftin_AW

· #17 · Feb 9, 2006

has anyone dismantled an e153 tranny with bar and confirmed that it is actually an LSD? The reason I ask is that the e153 in my mk1.5 has a bar through it, but with the back jacked up and the car in gear, if you turn one wheel the other wheel turns in the opposite direction - hardly LSD behaviour. It seems to me, from the above examples of the S54 that the bar indicates something in the differential contruction that perhaps isn't concurrent with the existance of an LSD.

billwot

· #18 · Feb 9, 2006

"... but with the back jacked up and the car in gear, if you turn one wheel the other wheel turns in the opposite direction ..."

That is NOT a valid test to determine if you have LSD. The MR2 system is a viscous coupling, not a locking type. Jacking it up and turning one wheel tells you absolutely nothing about what type of differential you have.

bill

Driftin_AW

· #19 · Feb 10, 2006

billwot said:
"... but with the back jacked up and the car in gear, if you turn one wheel the other wheel turns in the opposite direction ..."

That is NOT a valid test to determine if you have LSD. The MR2 system is a viscous coupling, not a locking type. Jacking it up and turning one wheel tells you absolutely nothing about what type of differential you have.

bill

I thought the early models (my engine/box is from an 89 SW20 JDM model) had a clutch type LSD, and it was the later ones that had the viscous diff.

AndrewMcG

Discussion Starter · #20 · Feb 10, 2006

I don't believe LSD was available until the 93 model. At least in the states, thats how it was and I think that was the case anywhere.

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