Thread: Life of Puma Rear Diff's

Originally Posted by uninformed

Ashcroft or LR diff???

Originally Posted by n plus one

It's an Ashcroft.

PS Hi Josh!

Yep, as Luke rightly pointed out it's an Ashcroft.

I'm taking the family to Wilsons Prom this weekend so I'll see how it performs with the full rig.

PS Hi Luke.

This piece of good news may well be missed going on the last dates of this thread, but I haven't been near the net for awhile and feel it needs a bit of a cheer up. My 07 TDCi 130 dual cab has now ticked over 135 000 km and as far as I can see and hear, it is on the original diffs. If they've been changed, then I've done at least 60000 on them. It's been on a mix of surfaces and work areas including mines and dirt or gravel roads plus loads of highway travelling with loads up to a tonne. At this moment I can say I'm very happy with it though it has a way to go before it reaches the 375000 I've got out of the Isuzu 110. It's just a bright spot amid the failures and I hope there are more of the bright spots out there somewhere

Hi all,

New to the forum, this topic caught my attention. I have recently purchased and installed my Ashcroft rear diff and locker conversion for my 2013 130.It is a much bigger and stronger housing, my mechanic (Canberra Motor Works) believes its the strongest diff now available. Shortened the tail shaft 31mm, and balanced. Factory job was balanced with counter-weight! Some diff whine was noticeable for while has settled down after a few weeks. I put it down to tighter stronger gears. Next job is axels, flanges and oil bearing conversion. Then front end.

Originally Posted by Steve A

Hi all,

New to the forum, this topic caught my attention. I have recently purchased and installed my Ashcroft rear diff and locker conversion for my 2013 130.It is a much bigger and stronger housing, my mechanic (Canberra Motor Works) believes its the strongest diff now available. Shortened the tail shaft 31mm, and balanced. Factory job was balanced with counter-weight! Some diff whine was noticeable for while has settled down after a few weeks. I put it down to tighter stronger gears. Next job is axels, flanges and oil bearing conversion. Then front end.

Hi Steve, did you purchase through CMC or did they just do the install?

Purchased from Les Richmond Automotive, installed at Canberra Motor Works.

Originally Posted by chook73

I am waiting until I get it over here and in before I get the shaft remade, it only takes a day to rebuild the shaft so I am ok with that. Dave from Ashcroft was very adamant about the 30mm but once Drover and I have ours fitted up we will be able to give you a better idea. When you get the shaft shortened its worth getting it rebuilt as they are very thin walled from the factory.

Hi All

I have just ordered one of the HDP38 diffs from Ashcroft Transmissions. Dave Ashcroft was extremely helpful with regards to my questions and it would appear that the "whine" issue has been solved now and they are QC checking every one of these HDP38 diffs by fitting them into a Defender 90 that they have modified and taking them out for a road test to make absolutely sure. The issue was traced to an assembly/setup problem I am told.

Anyway, I will obviously be shortening my rear prop, however I am keen to know more about these "upgrades" others have carried out with regards to rebuilding the rear prop to make it stronger as they are described as "thin walled rom the factory".


Cheers Rob

Originally Posted by Overland_110

Hi All

I have just ordered one of the HDP38 diffs from Ashcroft Transmissions. Dave Ashcroft was extremely helpful with regards to my questions and it would appear that the "whine" issue has been solved now and they are QC checking every one of these HDP38 diffs by fitting them into a Defender 90 that they have modified and taking them out for a road test to make absolutely sure. The issue was traced to an assembly/setup problem I am told.

Anyway, I will obviously be shortening my rear prop, however I am keen to know more about these "upgrades" others have carried out with regards to rebuilding the rear prop to make it stronger as they are described as "thin walled rom the factory".

Cheers Rob

Well that's my Chrissy present sorted then!

I was planning on going a Tom Woods rear DS - I've been happy with my front DC and figured that way I could keep the stock shaft and diff as spares

Do ashcroft still do these HD P38 diffs? Just had a look on their website and couldn't find them