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Discussion Starter #1
No, I didn't do a burnout and see two stripes :rolleyes: 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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btw ... i can remember my buddy had a NA tranny lying around which had the steel bar to..... MMH .. not sure anymore
 

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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
 

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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
 

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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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"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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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
 

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"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
 

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"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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Well, like I said:

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

:)

bill
 

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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.
 

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"... 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
 

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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.
 

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Discussion Starter #20
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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