L.s.d.???

[Dez]

Is there any company doing L.S.D.'s for the S12?
Mines a Mk2 i think (1988)....

[wacomuk]

no but you can get a ATB from quaife

[30psi]

And if you don't have £600 spare for a Quaife then you can use an S13 LSD with some other bits, for very little money.

[Dez]

600?..... .....Thats over double what i paid for the car - S13 it is then.
If anyone who has used and S13 diff could post up some picks of it, plus extra
parts i need - i would really appreciate it.
Thanks

[30psi]

You need the S13 diff, 2 left hand silvia shafts and one S13 inner 6 bolt CV joint housing and related driver side inner shaft....

Fully strip the S13 LSD, and removing the ring gear from it. Throw ring gear, case, shims etc in the bin

Then strip the S12 diff, and rebuild it with the S13 inner diff unit. ie bolt the S12 ring gear to the S13 unit.

Then the shafts need some work.

You use the short S12 shaft on the driver side with the S13 inner joint/inner

On the short side (passenger side) you can use the standard short shaft but you have to remachine so its like the S13 shaft.

[Sharas]

Cant the left output shaft be used from the s13/s14 diff?

[30psi]

No because it makes the shaft too long, and it full compresses up the cv joints and it even pushes the swing arm outwards

[Sharas]

Originally Posted by 30psi

No because it makes the shaft too long, and it full compresses up the cv joints and it even pushes the swing arm outwards

Got that, well i think that wount be a problem (first i need to make the car runing again , now thats bit of a problem)

[Dez]

Cheers for all the info mate, couldn't have asked for more. Doesn't look too bad a job. Just one question - Instead of machining the left inner cv joint - could i not just use the cv off an S13 on S12 shaft?

[30psi]

That was the same question by Saras in post 6, to which the answer is no because the shaft will be too long then due to the larger size of the S13 CV housing and shaft.

Of course if you wanted you could have the shaft shortened a little by a propshaft company such as recoprop.