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willy eckerslike



Member Since: 15 Jun 2009
Location: North yorks
Posts: 1789
United Kingdom 2007 Defender 110 Puma 2.4 HCPU Keswick Green
Diffs
Why wont my 110 Rear Diff fit in the 90 Question Original Member Pie n Pea Club.
110 HCPU Tipper
Post #208387 4th Feb 2013 9:01pm
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Glynparry25



Member Since: 16 Feb 2009
Location: Miserable Midlands
Posts: 3015
Wales 2009 Defender 110 Puma 2.4 XS DCPU Tonga Green
I am sure someone will correct me if I am wrong, but the rear diff in the 110 is a P38 type (Heavy duty) where the 90 has a standard Rover 24 spline type diff.

the P38 diff replaced the Sailsbury diff on the older 110s. They only fitted the rover diffs to the 90s as they didn't eat them like the 110s did.

Glyn Dog Sheep
Post #208388 4th Feb 2013 9:09pm
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blackwolf



Member Since: 03 Nov 2009
Location: South West England
Posts: 17876
United Kingdom 2007 Defender 110 Puma 2.4 DCPU Stornoway Grey
Because the 90 use a Rover pattern diff and the 110 uses a P38 diff.

The P38 was used originally since it was the only Rover-made 4-pinion diff available at the time. Now of course there is a 4-pinion Rover diff (as used in the front axle) but the P38 is still used in the rear.
Post #208389 4th Feb 2013 9:13pm
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willy eckerslike



Member Since: 15 Jun 2009
Location: North yorks
Posts: 1789
United Kingdom 2007 Defender 110 Puma 2.4 HCPU Keswick Green
And whats the physical difference, bigger i expect Original Member Pie n Pea Club.
110 HCPU Tipper
Post #208392 4th Feb 2013 9:16pm
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ZeDefender



Member Since: 15 Sep 2011
Location: Munich
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Germany 2011 Defender 110 Puma 2.4 SW Baltic Blue
Always interesting stuff on this forum Thumbs Up Tell someone you love them today because life is short.
But shout it at them in German because life is also terrifying and confusing...
Post #208394 4th Feb 2013 9:24pm
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ibexman



Member Since: 13 Dec 2008
Location: Essex
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I think it can be machined to fit Thumbs Up
Post #208396 4th Feb 2013 9:30pm
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willy eckerslike



Member Since: 15 Jun 2009
Location: North yorks
Posts: 1789
United Kingdom 2007 Defender 110 Puma 2.4 HCPU Keswick Green
Reckon I'll just send my 110 locking diff back to Crown Differentials and get it rebuilt into a 90 Diff, he enjoys it, already swapped it from a 90 to a 110 he can now swap it back again. Laughing Original Member Pie n Pea Club.
110 HCPU Tipper
Post #208399 4th Feb 2013 9:35pm
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Glynparry25



Member Since: 16 Feb 2009
Location: Miserable Midlands
Posts: 3015
Wales 2009 Defender 110 Puma 2.4 XS DCPU Tonga Green
Not really any bigger, but the housing on the P38 is shorter and has a different bolt configuration.

Here is a picture of the 2:


If you speak to Ashcroft- I do believe the rover diff can be made to fit the 110 housing with the addition of a spacer plate but not the other way around.

I am guessing you have some sort of locker? If so more than likely there will be a spacer ring http://www.ashcroft-transmissions.co.uk/in...ductId=128

Glyn Dog :sheep:

Admin note: this post has had its images recovered from a money grabbing photo hosting site and reinstated Mr. Green
Post #208405 4th Feb 2013 9:38pm
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