Defender Transfer box parts ?

I answered this a day or two ago but it seems not to have posted, so I'll try and remember what I said.

I see the complete gear set is STC2940 and is available from several suppliers. It says 83-06 and 07 on, so that's pretty much all of them. For £50 or so I'd get one of these because chances are it will fit inside the casing. Yes, maybe there are a few knocking around with different numbers of teeth but provided you replace the lot as a matched set, it should all work.

When the TD5 came along the design of the diff casing changed and the splines where the transfer box gears fit were different. As you'll have seen from taking it apart, the diff casing also serves as the shaft for the final drive gears in the transfer box. So the outside of the casing changed, but (and what's crucial here) the space for the innards remains the same.

My old one is now doing duty in another gearbox so is already spoken for, as it were. Sorry!

Hi Brown
Thanks for your Reply
My worry's were the 2 different sets of diff gears available and listed by the gearbox specialists the 14/9 sun planet set and the 16/10 set ?
Why list the 2 different types if they do the same job and do not alter any final ratios ??
Would perhaps the 14/9 tooth set be stronger ? As more metal ?!
My centre transfer box diff has the 16/10 set and came out a 300 TDI defender .it's the 1.141 ratio to replace my 1.16 that's revving the engine to hard

On another note
Was fitting the ATB diff worth the exspense ?
How has it improved the drive ?
It's on my possibilities list if worthwhile ?
Cheers

I have emailed Ashcroft transmissions concerning the 2 listed gear sets they advertise and if they both do same job without affecting ratios ?
I am still waiting for a reply a week later ? Before I return all the wrongly manufactured parts they sent me.
I am not overly impressed with them so far .

I think the gears will fit in the same sized space, but obviously you won't be able to have a 16 tooth on one side and a 14 on the other - they'll need to be fitted as a matched set. I don't know which would be stronger. The centre diff isn't designed to do massive amount of work - most people advise against revving hard when you've got one wheel spinning, for example, and trying to get the centre diff lock engaged instead.

You don't really notice a difference in everyday driving with the limited slip centre diff. However, I was very pleased with it in early 2018 when there was a lot of snow in the part of Wales I visit and the hills were often very slippery. It sailed up slopes into virgin snow where you could see that vehicles with much more aggressive tyres than mine had spun their wheels, slid around and ultimately given up. Occasionally I've found it possible to bring the car to a standstill on my smallholding, but that's very muddy on a clay subsoil in an area that gets a lot of rain and all four wheels spin at once.