Thread: Defender T case in D2?

Originally Posted by Riceburner

I think I will rather fit 4:1 diff ratios. Low and high range will benifit.

Yes using the Defender box will give you almost the same change (in Hi ratio) as changing to 4.1:1 diff ratios (16.5% Def Vs 15.8% diff) but changing the diffs will give you the benefit in low ratio where the Defender ratios are the same as your current DII low ratio.

Hi Riceburner,
Fit the 1.4 ratio and get a white marker, strip the speedo and mark the speedo for the correct speed.
Or drink less beer and drive by memory.

Originally Posted by Riceburner

So it will work fine with my tyre size?

The difference will be about 450RPM . I have fitted a Def case gear set to one and it was altered from 2250Rpm to 2700Rpm at 100km/h. (245/75/16 tyres)

IMO using 265/75/16 I would just check the engine management etc for issues, the Td5 will quite happily push these tyres IF the thing is running right and not overloaded with winches/roofracks/accessories etc etc.

MAybe a stage 1 ECU chip would be a better option for all round use? What year of manufacture is your D2?

JC

Originally Posted by Lotz-A-Landies

Yes using the Defender box will give you almost the same change (in Hi ratio) as changing to 4.1:1 diff ratios (16.5% Def Vs 15.8% diff) but changing the diffs will give you the benefit in low ratio where the Defender ratios are the same as your current DII low ratio.

Correct, I hadn't looked at the 2nd page of this thread, this was my next suggestion but I see Diana has got there already I would definately think about this option, with a chip of course

JC