Tris Cocks Posted March 21, 2011 Share Posted March 21, 2011 Hi I think im right in saying that 300Tdi defender and disco diff ratios are the same (3.54 : 1) so they can be interchanged after changing the flange. Are the diffs the same for TD5 discos and can they be swapped into my defender axle? Cheers Tris Quote Link to comment Share on other sites More sharing options...
doda456 Posted March 21, 2011 Share Posted March 21, 2011 All coil sprung landrovers have the same ratios, its just the splines that vary either 10 or 24 spline. To check the amount of splines whip out a halfshaft and count and it doesnt matter if a diff goes in the front or rear axle you will still go in the same direction Quote Link to comment Share on other sites More sharing options...
Disco-Ron Posted March 21, 2011 Share Posted March 21, 2011 TD5 disco diffs are not the same.............. and definately won;t fit a 98 90 axle..... Quote Link to comment Share on other sites More sharing options...
jcwcooper Posted March 21, 2011 Share Posted March 21, 2011 Disco 2 axles are different not sure about the specifics but they are still 2 pin I belive so no stronger than any of the other coil sprung diffs, But the disco 1 and RRC are the same as Doda456 mentioned above. Dave. Quote Link to comment Share on other sites More sharing options...
Off Road Toad Posted March 22, 2011 Share Posted March 22, 2011 Disco 2 diffs are the same! axle tubes are different. the usual donut will need to be changed on the rear diff though. (i used to build diffs for kam) any disco 1 later than 1993/4 should be 24 spline, ALL defenders 1994> (90" front and rear and 110" fronts)are interchangeable with your 300 tdi. Quote Link to comment Share on other sites More sharing options...
Range Rover Blues Posted March 22, 2011 Share Posted March 22, 2011 And P38 diffs fit RRC/Disco1 axles. Quote Link to comment Share on other sites More sharing options...
Off Road Toad Posted March 24, 2011 Share Posted March 24, 2011 And P38 diffs fit RRC/Disco1 axles. Eerm no they don't P38 diffs are a short nose diff and rrc/disco 1 are a long nose diff. they have a different bolt pattern and the diff centres have different crown wheel offsets and end flange size. P38 diffs or 'short nose diffs' are generally the same unit as fitted to 04> 110" defenders rear axle. The 110" axle tube is identical to a normal 90"/disco 1 axle tube but for a different bolt pattern for the diff and a 15mm thick ring and 8mm thick diff pan. Steve Quote Link to comment Share on other sites More sharing options...
Ghost14 Posted March 26, 2011 Share Posted March 26, 2011 so you cant replace the crown wheel in a defender diff with one from a p38? Quote Link to comment Share on other sites More sharing options...
Off Road Toad Posted March 26, 2011 Share Posted March 26, 2011 so you cant replace the crown wheel in a defender diff with one from a p38? No. Not unless you cobble a kind of hybrid diff together, but it's really not worth going there! Land rovers own HD pin diff uses a p38 center in the the standard 'long nose' type diff housing, but this has differences to the standard p38 (machined end flange) It also uses a unique crown wheel and pinion set up - a long nose pinion and a thin short nose crown wheel. The main differences of a long nose standard disco 1/rrc/d90 diff to a short nose p38 type diff are the following: Standard type has: Longer housing, longer pinion gear, Thinner crown wheel due to different offset of the end flange, different bolt pattern. Hope this helps. Steve Quote Link to comment Share on other sites More sharing options...
TS888 Posted March 27, 2011 Share Posted March 27, 2011 Your information suggests that the person who told me a 4 pin p38 diff was a straight swap into an older 3rd member is wrong. Good to know. Quote Link to comment Share on other sites More sharing options...
Td5james Posted January 23, 2020 Share Posted January 23, 2020 On 3/22/2011 at 7:36 AM, Off Road Toad said: Disco 2 diffs are the same! axle tubes are different. the usual donut will need to be changed on the rear diff though. (i used to build diffs for kam) any disco 1 later than 1993/4 should be 24 spline, ALL defenders 1994> (90" front and rear and 110" fronts)are interchangeable with your 300 tdi. Can I put a D2 diff into my td5 defender ?? Quote Link to comment Share on other sites More sharing options...
Ex Member Posted January 23, 2020 Share Posted January 23, 2020 They are the same for all fronts and 90 rears. 110/130 rears are different. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.