spline count on rrc's..... - Land Rovers Only

daway · 06-27-2007, 11:45 AM

now i am confused. i was on another forum and a member asked when did they change from 10 spline to 24 spline. i thought that LR started putting 24 splines in 1993, but he was parting out a 93 lwb that had 10 splines?? on the info at rr.net they have info that it started in 93. http://www.rangerovers.net/modelspecs/1993.html did lr start to add some 24 splines in 93 and not all the models. i looked up info at AB on diff's and they have that some 92's had 24 and some 93's had 10 splines. http://www.roverparts.com/ProductLis...imageField.y=0
anyone know or have any data. i should check my 93 owners manual when i get home, i think it would be there.
bored at work and this is bugging me.....lol

OkieRover · 06-27-2007, 12:11 PM

1993 is indeed the year.
There was a thread on here that had that data in it somewhere.
My 1993 LWB has 24.
I think it was a mid-year switch.

KevinNY · 06-27-2007, 12:31 PM

I just helped a friend switch his front on a 1993 D110 from 10 to 24 spline.

roverthen · 06-27-2007, 02:08 PM

Quote:

Originally Posted by OkieRover

1993 is indeed the year.
There was a thread on here that had that data in it somewhere.
My 1993 LWB has 24.
I think it was a mid-year switch.

It was a mid year switch. My '93 is also 24 spline.

Funrover · 06-27-2007, 07:54 PM

my 92 is 10 spline!

Paul Grant · 06-28-2007, 04:46 AM

I have taken apart a number of '92's and never had one with 24 splines. I also have taken apart '93's and never had 24 splines either. I think the latest build date for a '93 was 1/93 but I can't remember for sure. This topic was discussed at great length only a few months ago. In that thread it appeared as though late winter of '93 was when the first 24 spline Range Rovers begain turning up. I also think someone said that it had more to do with the axle casing serial number than the VIN but I'd have to go back and reread the thread for any accuracy.

FWIW, I took apart a '94 SWB over a year ago. It was purchased through John Robison who has a respected shop up in Springfield, MA. It have 10 spline diffs front and rear. I was amazed. I spoke with someone at Rovers North and he said, adding further confusion to the mix, that only the LWB had 24 splines. Personally, I know that is not correct because I have taken apart other SWB's and they did have 24 spline diffs. Go figure.

p76rangie · 06-28-2007, 05:57 AM

You can take your pick from below, but everywhere seems to have something different in regard to which are 24 spline.

The serial number of the rear axle is stamped on the rear or top of the axle casing, on the left hand side (roughly in line with the axle breather). Serial numbers comprise a 3-figure code, identifying the axle type, followed by the serial number and then a suffix letter (A, B, C etc.).

Rear Axles
10 Spline Differentials
28S axles up to 28S44171
32S axles up to 32S9121

24 Spline Differentials - 4 bolt flange
28S44172 onwards
32S9122 onwards

24 Spline Differentials - 3 bolt flange
Certain models from VIN MA81992 (March 1994)

Front Axles
10 Spline Differentials
18L axles
19L axles
34L axles
35L axles
38L axles up to 38L03120
39L axles up to 39L05552
42L axles up to 42L00521
43L axles up to 43L18579

24 Spline Differentials
38L03121 onwards
39L05553 onwards
42L00521 onwards
43L18580 onwards
All axles from March '94 onwards

VIN CA to HA610293, Non ABS, axles with a suffix A serial number,
Standard : halfshafts are 10 sp at the diff and 23 sp at the CV,

VIN CA to HA610293, Non ABS, axles with a suffix B serial number,
Standard : halfshafts are 10 sp at the diff and 32 sp at the CV,

VIN CA to HA610293, with ABS,
must use Axle number,

Rear
1993-00 Rover Type : Axle serial numbers 35S18135C or 37S08651B and later
 Axle shaft Dia : 1.24"
 Spline : 24
 Ring Gear Pinion Ratio : 3.54

Front 24 spline
Axle serial numbers 49L11363C or 57L05188B and later
Rear 24 spline
Axle serial numbers 35S18135C or 37S08651B and later

daway · 06-28-2007, 10:28 AM

thanks guys for the good info and data!

i must have missed that thread, i looked for a bit before i posted this but did not see it (so many). i will check to see if i can find the numbers on the axle.

p76rangie · 06-29-2007, 07:37 PM

It pays to double check anything manufactured in 1993. Was talking to my Landrover mechanic this morning about how to identify what had what. I quoted a case of where he had a 93 disco in for diff work. It was a single owner from new and the vin number had it well inside the range for 24 spline axles. When he pulled it apart he found that it had a 10 spline front diff and a 24 spline rear diff. As it was a single owner, it came from the factory in this state.

06-27-2007, 11:45 AM	#1 (permalink)
daway Senior Member Join Date: Apr 2006 Location: St. Croix Valley, MN Posts: 1,300 Gallery: 0	spline count on rrc's..... now i am confused. i was on another forum and a member asked when did they change from 10 spline to 24 spline. i thought that LR started putting 24 splines in 1993, but he was parting out a 93 lwb that had 10 splines?? on the info at rr.net they have info that it started in 93. http://www.rangerovers.net/modelspecs/1993.html did lr start to add some 24 splines in 93 and not all the models. i looked up info at AB on diff's and they have that some 92's had 24 and some 93's had 10 splines. http://www.roverparts.com/ProductLis...imageField.y=0 anyone know or have any data. i should check my 93 owners manual when i get home, i think it would be there. bored at work and this is bugging me.....lol __________________ 2001 X5 3.0i "dodi" 1993 RRC, county LWB "bertha" 1991 RRC (dad's), parting out (email me or check out the link below) myroverworld

06-27-2007, 12:31 PM	#3 (permalink)
KevinNY Senior Member Join Date: Sep 2006 Location: Guilderland, NY Posts: 781 Gallery: 0	I just helped a friend switch his front on a 1993 D110 from 10 to 24 spline. __________________ "The Goat",1973 Series III coil conversion, Daihatsu 2.8 Td, power steering, dual ARBs Etc. '91 RRC, bone stock

06-28-2007, 04:46 AM	#6 (permalink)
Paul Grant Senior Member Join Date: Jun 2005 Location: CT Posts: 913 Gallery: 0	I have taken apart a number of '92's and never had one with 24 splines. I also have taken apart '93's and never had 24 splines either. I think the latest build date for a '93 was 1/93 but I can't remember for sure. This topic was discussed at great length only a few months ago. In that thread it appeared as though late winter of '93 was when the first 24 spline Range Rovers begain turning up. I also think someone said that it had more to do with the axle casing serial number than the VIN but I'd have to go back and reread the thread for any accuracy. FWIW, I took apart a '94 SWB over a year ago. It was purchased through John Robison who has a respected shop up in Springfield, MA. It have 10 spline diffs front and rear. I was amazed. I spoke with someone at Rovers North and he said, adding further confusion to the mix, that only the LWB had 24 splines. Personally, I know that is not correct because I have taken apart other SWB's and they did have 24 spline diffs. Go figure. __________________ Paul Grant paulgrant@mac.com http://stores.ebay.com/Classic-Rovers 203-770-1699

06-28-2007, 10:28 AM	#8 (permalink)
daway Senior Member Join Date: Apr 2006 Location: St. Croix Valley, MN Posts: 1,300 Gallery: 0	thanks guys for the good info and data! i must have missed that thread, i looked for a bit before i posted this but did not see it (so many). i will check to see if i can find the numbers on the axle. __________________ 2001 X5 3.0i "dodi" 1993 RRC, county LWB "bertha" 1991 RRC (dad's), parting out (email me or check out the link below) myroverworld

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06-28-2007, 05:57 AM	#7 (permalink)
p76rangie Ian Matthews Join Date: Jan 2006 Location: Melbourne Australia Posts: 2,101 Gallery: 0	You can take your pick from below, but everywhere seems to have something different in regard to which are 24 spline. The serial number of the rear axle is stamped on the rear or top of the axle casing, on the left hand side (roughly in line with the axle breather). Serial numbers comprise a 3-figure code, identifying the axle type, followed by the serial number and then a suffix letter (A, B, C etc.). Rear Axles 10 Spline Differentials 28S axles up to 28S44171 32S axles up to 32S9121 24 Spline Differentials - 4 bolt flange 28S44172 onwards 32S9122 onwards 24 Spline Differentials - 3 bolt flange Certain models from VIN MA81992 (March 1994) Front Axles 10 Spline Differentials 18L axles 19L axles 34L axles 35L axles 38L axles up to 38L03120 39L axles up to 39L05552 42L axles up to 42L00521 43L axles up to 43L18579 24 Spline Differentials 38L03121 onwards 39L05553 onwards 42L00521 onwards 43L18580 onwards All axles from March '94 onwards VIN CA to HA610293, Non ABS, axles with a suffix A serial number, Standard : halfshafts are 10 sp at the diff and 23 sp at the CV, VIN CA to HA610293, Non ABS, axles with a suffix B serial number, Standard : halfshafts are 10 sp at the diff and 32 sp at the CV, VIN CA to HA610293, with ABS, must use Axle number, Rear 1993-00 Rover Type : Axle serial numbers 35S18135C or 37S08651B and later  Axle shaft Dia : 1.24"  Spline : 24  Ring Gear Pinion Ratio : 3.54 Front 24 spline Axle serial numbers 49L11363C or 57L05188B and later Rear 24 spline Axle serial numbers 35S18135C or 37S08651B and later

06-29-2007, 07:37 PM	#9 (permalink)
p76rangie Ian Matthews Join Date: Jan 2006 Location: Melbourne Australia Posts: 2,101 Gallery: 0	It pays to double check anything manufactured in 1993. Was talking to my Landrover mechanic this morning about how to identify what had what. I quoted a case of where he had a 93 disco in for diff work. It was a single owner from new and the vin number had it well inside the range for 24 spline axles. When he pulled it apart he found that it had a 10 spline front diff and a 24 spline rear diff. As it was a single owner, it came from the factory in this state.

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