Thread: Defender/Disco Diff interchangability

Early D1s are 10 spline and later D1s are 24 spline. The change over is around 93/94. What year is the Disco ?

Originally Posted by pop058

Early D1s are 10 spline and later D1s are 24 spline. The change over is around 93/94. What year is the Disco ?

Oooh, good question, don't know. I assumed the splines were all the same. That difference is handy to know. Cheers.

They are all crap so hopefully it is free!

Originally Posted by Red90

They are all crap so hopefully it is free!

Thank you for your expert and qualified opinion. I hope you receive such a professional and courteous solution the next time you require some assistance. Have a nice day.

You already answered the question. I’m providing good advice. A used disco diff has zero value and should be free. It is not worth putting in an Isuzu truck. If you are having the diff out put something half decent in there.

Originally Posted by Red90

You already answered the question. I’m providing good advice. A used disco diff has zero value and should be free. It is not worth putting in an Isuzu truck. If you are having the diff out put something half decent in there.

Like for instance?
And that is a legitimate question,

also what's the problem with disco diffs, mine is a d2, so no doubt different, and has only done 460 000 km so far, but are holding up ok at this point. I realize there are better/stronger options but for general running they seem adequate.

The stock diff is 10 spline. They are pretty weak and I would not pay money for another 25 year old used one. If it is free and you can’t afford to upgrade them go for it knowing you might be doing it again.

If you change to 24 spline you need aftermarket shafts so you might as well put a strong diff in there like a 4 pin or an ATB and not need to worry about it again.

Sorry Mark but Red90 is on the money , the Rover diff was designed in the early 30's for a 20Hp engine , The design is basically unchanged & has no place post 1970's . They are all Crap.

Installing a used Rover diff is asking for trouble , At a minimum Rebuild it with a 4 pin centre , better yet an ATB or Truetrac centre. Cheap, easy & might potentially save your life .