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Home > Maintenance & Modifications > Ashcroft Transmission's new HD P38 Diff replacement.
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ashtrans
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Member Since: 08 Nov 2008
Location: Harpenden
Posts: 257

United Kingdom 
Hi,

you are quite right,

it looks to have about 1/4" low hypoid offset, ie the pinion bearing centre looks about 1/4" lower than the axle tube centre,

ours is more noticeable at 30mm

Dave Dave
Post #242177 9th Jun 2013 8:49am
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blackwolf



Member Since: 03 Nov 2009
Location: South West England
Posts: 17369

United Kingdom 2007 Defender 110 Puma 2.4 DCPU Stornoway Grey
Dave,

This looks like a very interesting development!

Is the shorter propshaft that is required with this diff one that is available as standard on a different Landrover, or is it necessary to get one modified to suit? Will you be selling compatible propshafts?

Also, how would you rate the new diff in terms of strength compared to a standard P38 with an Ashcroft HD ring & pinion set (presumably the new diff is much tougher), and to a Rover pattern diff with an Ashcroft R&P set?

Finally, what sort of figure would you be looking at for an outright sale for one of these with an Ashcroft ATB fitted, together with a propshaft?

I have one of your ATBs with HD ring and pinion in the front axle of my 110 and was planning at some stage to upgrade the rear to a P38 with ATB and HD ring and pinion, but I am now thinking that this new diff might (subject to the price) be a better option. What would you recommend?

Thanks,

Roger
Post #242445 10th Jun 2013 9:01am
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Drover



Member Since: 27 May 2011
Location: Central Coast NSW
Posts: 53

Australia 
Finally got the old P38 centre out today and fitted the the new HDP38.

Here is a comparison pic of the two nose to nose.

[URL=]
Click image to enlarge
[/URL]

Admin note: this post has had its images recovered from a money grabbing photo hosting site and reinstated Mr. Green
Post #243753 15th Jun 2013 7:45am
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diesel_jim



Member Since: 13 Oct 2008
Location: hiding
Posts: 6092

United Kingdom 2006 Defender 110 Td5 SW Epsom Green
I love looking at stuff like that Bow down Bow down Bow down Thumbs Up Thumbs Up
Post #243769 15th Jun 2013 8:40am
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portal pat



Member Since: 05 Jan 2015
Location: South. Very south.
Posts: 36

Australia 2001 Defender 110 Td5 SW Fuji White
Where is this a assembly available in Australia please? Nothing suggests poor workmanship like wrinkles in the duct tape.
Post #456991 22nd Sep 2015 5:21am
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jst



Member Since: 14 Jan 2008
Location: Taunton
Posts: 8021

 2011 Defender 110 Puma 2.4 USW Stornoway Grey
through Ashcrofts Cheers

James
110 2012 XS Utility
130 2011 M57 bespoke Camper
90 2010 Hardtop
90 M57 1988 Hardtop
Post #457064 22nd Sep 2015 10:28am
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portal pat



Member Since: 05 Jan 2015
Location: South. Very south.
Posts: 36

Australia 2001 Defender 110 Td5 SW Fuji White
You imported it yourself? Nothing suggests poor workmanship like wrinkles in the duct tape.
Post #457097 22nd Sep 2015 12:03pm
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Stue5



Member Since: 06 Jul 2014
Location: Marche
Posts: 111

Italy 2005 Defender 110 Td5 USW Alpine White
blackwolf wrote:
Dave,

This looks like a very interesting development!

Is the shorter propshaft that is required with this diff one that is available as standard on a different Landrover, or is it necessary to get one modified to suit? Will you be selling compatible propshafts?

Also, how would you rate the new diff in terms of strength compared to a standard P38 with an Ashcroft HD ring & pinion set (presumably the new diff is much tougher), and to a Rover pattern diff with an Ashcroft R&P set?

Finally, what sort of figure would you be looking at for an outright sale for one of these with an Ashcroft ATB fitted, together with a propshaft?

I have one of your ATBs with HD ring and pinion in the front axle of my 110 and was planning at some stage to upgrade the rear to a P38 with ATB and HD ring and pinion, but I am now thinking that this new diff might (subject to the price) be a better option. What would you recommend?

Thanks,

Roger


What was your final decision on the prop length? Reading the other post on the atb by tatra805 I am unsure what I need to install. Std or 31mm shorter . Have I miss read somewhere?

My setup. 2005 110
Old diff-p38 type
New diff-long rover with atb and adaptation plate.

I think I have a spare p38 rear prop in the garage but need to check the lenght( it is shorter but maybe too short) Range Rover p38 4.6 99 lpg(gone Sad )
Post #470402 7th Nov 2015 3:02pm
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jst



Member Since: 14 Jan 2008
Location: Taunton
Posts: 8021

 2011 Defender 110 Puma 2.4 USW Stornoway Grey
if you are fitting the slighly longer nosed Ashcroft off set pinion diff then you need to take 31mm out of the length.

if yoiur just builing an ATB into a std diff then no change. Cheers

James
110 2012 XS Utility
130 2011 M57 bespoke Camper
90 2010 Hardtop
90 M57 1988 Hardtop
Post #470897 9th Nov 2015 8:54am
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Stue5



Member Since: 06 Jul 2014
Location: Marche
Posts: 111

Italy 2005 Defender 110 Td5 USW Alpine White
Thank You JST Thumbs Up Range Rover p38 4.6 99 lpg(gone Sad )
Post #471124 9th Nov 2015 9:00pm
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