Hi all

series 2 XJ 1978.

does anyone know if the differential is the same on both 6 & 12 cylinder cars please?

 

I don't know. Diff ratio often varied with market.

In that era 3.07 and 3.31 were commonly used by Jaguar. I think North American market cars (both 6 and 12 cylinder) usually got the 3.31 and other markets the 3.07.

A V12 car would have LSD as standard; optional on 6-cylinder cars.

Others will chime in

Cheers
DD

 

Mine, 6-banger originally, is 3:31.
(';')

 

If you can’t find what you need, ( which I couldn’t) you can take pumpkin to a reputable 4x4 shop and they can put whatever gears you like in it, and add limited slip, mines now an auburn limited slip with 3:73 gears, really helps get the car moving off the line!!

 

My ‘77 twelve cylinder was 3.31. It’s now a 3.54 from Coventry West.
Transmission also makes a difference. I have a special built close ratio 700R4 with different first & second gears. First is 2.78.

 

All my S2 cars were:

V12 = 3.31 LSD
6cyl = 3.07 Open.

I believe OZ got the same spec as UK.

 

Thanks guys. I’m clear on this now. Many thanks