Will This Kill me?.....

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I've never heard of different ratios on Discovery diffs, I suspect there is a miss print somewhere.
Until the independent suspension vehicles came out there were basically 2 diff ratios on Land Rovers (with the exception of very early 80" and the 101)
4.7:1 fitted to leaf sprung vehicles and 3.54:1 fitted to coil spring vehicles. The exception was the Stage 1 V8 that had leaf springs and a 3.54 diff.
There were some other ratios that were fitted to Rover saloons that will fit.
Wammers, what makes you think your 200 has 3.45 axles?
I would expect an NRC2750 to be a new diff, an NRC2750R to be a recon, that is usually the meaning of an R on the end of an LR part no.
Spot on.
 
Sorry so slow, the donor is a J reg 93 vogue 200tdi all mod cons, I THINK factory tdi. Mine 200tdi vogue bog standard factory, 93/94 L both springs and classic (not soft dash)
cheers
mike

In that case it could be that the axle you fitted is 3.45:1 as i said before. It depends on year and spec. Landrover list two diffs, 3.45:1 and 3.54:1 for the 200 Tdi Range Rover. Same diff as fitted to Discoveries. Which also list two different ratios as previously stated. From chassis number JA623615 to KA637567 200 TDI Range Rover 1993. The standard fit differential was P/N FTC 2750 3.45:1. Go to WWW.rimmerbros.co.uk and look up parts lists for confirmation. Of course it may well be the other way around and yours is fitted with 3.45:1 diffs and you have fitted a 3.54:1 axle. Either way it would cause the problem with the transfer box. Hope this is of help to you. Regards Tony.
 
Land Rover Discovery Front Axle - Parts Spares Accessories - Rimmer Bros


Read the last sentence of the paragraph entitled serial numbers in the Introduction section.

Go to the parts list for Disco diffs. Please note first diff listed P/N FTC 2750 3.45:1. Go to parts list for Classic RR note that 3.45:1 diffs were fitted to all models between the chassis numbers listed in 1993. Unless this is a seriously well reproduced reoccuring misprint, there are two ratios available.
 
Go to the parts list for Disco diffs. Please note first diff listed P/N FTC 2750 3.45:1. Go to parts list for Classic RR note that 3.45:1 diffs were fitted to all models between the chassis numbers listed in 1993. Unless this is a seriously well reproduced reoccuring misprint, there are two ratios available.

Have to admit the more i look at this the more it does seem to be a misprint. How can you have a new diff P/N FTC 2750 at 3.45:1 and a recon of the same diff designate with R for recon with adifferent ratio.
Sorry but was only going off info available. Info appears to have been incorrect.
 
One misprint, several links leading to it.

That's one of the problems with computers, one mistake can get reproduced lots of times, especially if you use links or "cut & paste"

Anyway, I don't care what Rimmer Brothers say, all RR Classic. Series 1 Discoveries & Defenders have the same ratio diffs.
 
One misprint, several links leading to it.

That's one of the problems with computers, one mistake can get reproduced lots of times, especially if you use links or "cut & paste"

Anyway, I don't care what Rimmer Brothers say, all RR Classic. Series 1 Discoveries & Defenders have the same ratio diffs.
Yep,I got fed up with saying that.And dont you think that there would be loads of cases of smashed transer boxes/CV joints and posts all over the forumms if there were two different ratio's.I have all the factory W/shop manuals from 1948 and nowhere does any of them state anything other than 3.54/1 for coil sprung 1970 on.I have bought allsorts of transmission stuff since about 1983 - all either direct from LR or Ashcrofts,(Same as most other independant LR garages)and never seen anything 3.45/1.
 
Trouble is people assume that parts list are accurate. Some even believe the official Land Rover parts book is always right. The last Defender parts book published about six years ago just before I left the parts business didn't list any rear brakes for the 110 prior to the early 90s (when they got disc brakes).
 
Did someone mention swapping the upper swivel pins to the standard from the standard diff? reversing the issue?
Cheers , glad the part number thing is resolved too.....
 
I was under the impression the swivel setup is different on the non abs axle to the abs type and that the top swivel pin and bearings won't be the same.What you could do is fit the axle complete and cut the abs sensor wire off flush with the top of the swivel pin.
 
Thanks, is just cutting the wire on the swivel housing enough? Or are there any other dangers to doing this. I have been driving around with my transfere box screaming and squeeling for about 4 months now, I can't say it's getting any better and dont know how or if this may have damaged the replacement rear axle. What are the possibilities of this being the case?
Cheers
MIke
 
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