Eightpot Posted May 8, 2014 Share Posted May 8, 2014 Just stripping an axle down and found this diff lurking inside - Looks pretty heavy duty and weighs a ton - stamped gkn but can't find anything on google.. Quote Link to comment Share on other sites More sharing options...
Diesel_90 Posted May 8, 2014 Share Posted May 8, 2014 I would say a GKN 4 pin diff, I acquired a pair of military axles and they had these in them Quote Link to comment Share on other sites More sharing options...
Jamie_grieve Posted May 8, 2014 Share Posted May 8, 2014 Looks like a 4 pin out a 90 V8 Quote Link to comment Share on other sites More sharing options...
Hybrid_From_Hell Posted May 8, 2014 Share Posted May 8, 2014 ^^Wot he says. Count the teeth and also the ones on the pinion, then divide the CW teet by Pinion teeth 3.54 = V8 90 4 Pin or Factory HD 4 Pin Upgrade 24 spline shafts 4.7 = Series HD 4 pin 10 spline drive shafts ? 16mm Shaft in centre Looks like Prob metric casing so I'll guess 4.7 Must go, anorak needs a dryclean now Quote Link to comment Share on other sites More sharing options...
Eightpot Posted May 8, 2014 Author Share Posted May 8, 2014 Ta, not come across one before. Looks pretty sturdy. Quote Link to comment Share on other sites More sharing options...
Jamie_grieve Posted May 8, 2014 Share Posted May 8, 2014 ^^^^ Hybrid, lol They fitted them at the start of Td5 era 110's too. This one's from a 2006 ROW spec 300tdi next to a salisbury and 2 pin centre which might be of interest to someone with similar outdoor clothing habits as ourselves. Quote Link to comment Share on other sites More sharing options...
jackmac Posted May 8, 2014 Share Posted May 8, 2014 Looks no good to me, I'll get rid of it for you! Quote Link to comment Share on other sites More sharing options...
Eightpot Posted May 8, 2014 Author Share Posted May 8, 2014 The casing looks a bit different to the photo above - any significance to that? (need to significantly increase my nerd level on diffs) : ) Quote Link to comment Share on other sites More sharing options...
Hybrid_From_Hell Posted May 8, 2014 Share Posted May 8, 2014 The 2nd one looks like a Late TD5 Long Nose casing, the insides are from a P38 Short Nose unit The SN 4 Pin units are ONLY found on rear Axles of P38 4.6 engined models ONLY and in Late TD5 110 Rear Axles, so fetching good money now and with P38 dying getting trickier to source. ..............Anorak only went in for quick clean Quote Link to comment Share on other sites More sharing options...
Jamie_grieve Posted May 8, 2014 Share Posted May 8, 2014 I would also add that we had lots of problems with the later vehicles with the four pin diff, they do not stand up to hard use like the Salisbury's do. We changed loads of them and used to retrofit Salisbury axles from accident damaged vehicles. The narrower hubs and stupid wheel bearing setup was another minus point of axles with these diffs fitted. Quote Link to comment Share on other sites More sharing options...
David Sparkes Posted May 8, 2014 Share Posted May 8, 2014 The 2nd one looks like a Late TD5 Long Nose casing, the insides are from a P38 Short Nose unit The SN 4 Pin units are ONLY found on rear Axles of P38 4.6 engined models ONLY and in Late TD5 110 Rear Axles, so fetching good money now and with P38 dying getting trickier to source. Interesting ... When the original 2 pin in the rear axle of my 1995 2.5 DSE failed, Ashcroft offered me a 4 pin, or a 4 pin, or a 4 pin, so I fitted the proffered 4 pin. Did the 38A have Short Nose and Long Nose possibilities, or does the '38A' specification mean it must be a Short Nose variant? I suppose I'm wondering where Ashcroft sourced the 4 pin units from; a bulk buy perhaps, and whether that source has now dried up? Regards. Quote Link to comment Share on other sites More sharing options...
Ex Member Posted May 8, 2014 Share Posted May 8, 2014 Ashcroft manufacture their own 4 pin. http://www.ashcroft-transmissions.co.uk/differentials/4-pin-centre.html Quote Link to comment Share on other sites More sharing options...
David Sparkes Posted May 8, 2014 Share Posted May 8, 2014 Ashcroft manufacture their own 4 pin. http://www.ashcroft-transmissions.co.uk/differentials/4-pin-centre.html If that was aimed at me, I followed your link and note that it isn't claimed to fit the 38A. Nor do I recall spending anything like that amount, but my memory might have wiped unpleasant details like that :-) Quote Link to comment Share on other sites More sharing options...
Hybrid_From_Hell Posted May 8, 2014 Share Posted May 8, 2014 No..that's a long nose 4 pin not a short nose... Quote Link to comment Share on other sites More sharing options...
Ex Member Posted May 8, 2014 Share Posted May 8, 2014 No..that's a long nose 4 pin not a short nose... You just need a spacer ring. And there is the genuine 4 pin as well. Quote Link to comment Share on other sites More sharing options...
Hybrid_From_Hell Posted May 9, 2014 Share Posted May 9, 2014 That's a nice rustling noise your anorak makes too Quote Link to comment Share on other sites More sharing options...
Off Road Toad Posted May 11, 2014 Share Posted May 11, 2014 The first pic you have is a genuine factory four pin long nose unit. It has a standard pinion combined with a thin p38 style crown wheel, they did not do these in 10 spline. The second one you posted is a retro fitted four pin ( you can see where it's been machined down). All p38's use short nose BUT not all are four pin as Nige has said (4.6) Re: the design of the wheel bearings on late 110" axles - simples - take the spacer/shim out and the stake nut and fit the old type locking tab and two nuts! Quote Link to comment Share on other sites More sharing options...
discomikey Posted May 12, 2014 Share Posted May 12, 2014 always confuses me why they say 4 pin and 2 pin, i mean dont get me wrong, the 4 pin kinda makes sense even though it is usually a single piece haha. the 2 pin though? yes there is half the "pinnage" (technical term there!) than a 4 pin but there is in effect only 1 pin! my coat, why thankyou... Quote Link to comment Share on other sites More sharing options...
Ex Member Posted May 12, 2014 Share Posted May 12, 2014 Pin is short for Pinion, referring to the pinion gears. Quote Link to comment Share on other sites More sharing options...
discomikey Posted May 12, 2014 Share Posted May 12, 2014 ahh much clearer now. although misleading thanks Quote Link to comment Share on other sites More sharing options...
Ex Member Posted May 12, 2014 Share Posted May 12, 2014 Yes, it is a horribly confusing abbreviation. Quote Link to comment Share on other sites More sharing options...
Mo Murphy Posted May 12, 2014 Share Posted May 12, 2014 Now I'm confused, I thought there was only one pinion Mo Quote Link to comment Share on other sites More sharing options...
Ex Member Posted May 12, 2014 Share Posted May 12, 2014 There is the one pinion for the ring and pinion. "Pinion" is just a generic gear term for a small drive gear. Within the differential, it refer to the middle gears that connect the side gears to each other. http://auto.howstuffworks.com/differential2.htm Quote Link to comment Share on other sites More sharing options...
Off Road Toad Posted May 13, 2014 Share Posted May 13, 2014 Plus '4 pin' is easier on the ears than say 'four planetary gears differential' :-) Quote Link to comment Share on other sites More sharing options...
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