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oddwriter

Member

• Jul 17, 2015

• #1

Hi
I've heard that RR diffs will fit a S3 and have the effect of an overdrive (but obviously in all gears and 4wd). Question is what diffs will fit a 1982 S3?

There seems to be several types out there - 2 pin, 4 pin, 10 spline, 24 spline.
Anyone got a definitive guide as to what diff out of what RR/Disco will fit?

Thanks.

 

J

John S

Well-Known Member

• Jul 17, 2015

• #2

You can only get either 10 or 24 spline drive flanges for S3 so that defines your options.

 

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divie

Well-Known Member

• Jul 17, 2015

• #3

First question is it fitted with Rover or Salsbury diffs ? Next question what engine do you run ? 3.54 range rover diffs are OK with a good petrol or 200 tdi. Don't even consider them with a 2.25 diesel up front, I tried it and soon went back to 4.7s

 

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oddwriter

Member

• Jul 17, 2015

• #4

Rover diffs and a standard petrol engine in good condition.

 

Castor

Trainee maniac

• Jul 17, 2015

• #5

So is there a definitive guide anywhere? I'd like to know too.

 

owl

Well-Known Member

• Jul 17, 2015

• #6

When I was a lad it was common to search for Rover P4 diffs of 4.3:1 ratio but on a series 4.7's and an overdrive is best. some good info here.

Land Rover gear ratios