fitting locker in rear diff prob??

**stig0000** · 15th April 2010, 07:46 PM

well im getting a rear locker for my fender,,, witch has a rover rear diff,, so its a arb r138 air locker, but i cant get one at the moment, and only for the front witch is a r128 locker,

so heres my problem, i want it in the rear, so i thought would the r128 fit in the rover rear anyway as they would be the same splines and ratio,,, but if its a diff part NO. there much be a difference

so can i just put the locker in the front diff center and put that in the rear,, and put the rover rear center in the front?? will it work

or dose any one no were i can get a SH rear r138 airlocker from, there is non on ebay and none on here for sale

**Hardchina** · 17th April 2010, 05:19 PM

Originally Posted by stig0000

so heres my problem, i want it in the rear

Thats quoteworthy

Why dont you source a sals for the rear and lock that?
Is a locked rover rear diff really going to last long in a 110?

**BigJon** · 17th April 2010, 05:48 PM

I think that even though your rear diff is a "Rover" diff it is not the same as the front diff. Your rear diff will be a "wolf" diff.

**Disco_owner** · 17th April 2010, 05:59 PM

Stig000 , unless you've had a Diff transplant in the defender , I would say that the rear would be a "P38 Type" rear Diff not a "Rover Type".

**Hendrik** · 17th April 2010, 06:24 PM

Originally Posted by Hardchina

Thats quoteworthy

Why dont you source a sals for the rear and lock that?
Is a locked rover rear diff really going to last long in a 110?

that is classic!!!

What is actually different about the p38 rear diff from the rover type? I'm talking about the center portion where the locker actually fits in. The crown wheel is the same size because it has to be the same ratio. So why will a R128 not fit that p38 type banjo diff?

**justinc** · 17th April 2010, 06:54 PM

The bolt pattern etc is different, and AFAIR they are not interchangeable as they won't line up depth wise with the axles IF you actually are able to fit one in the housing.

Either fit a complete Disco1 rear differential (Cheap and easy to find and will bolt straight in only need to change tailshaft length) and lock it, or my preferrence is for a Sals and lock that.

The P38 diff is inherently weak even locked as the crownwheel is thinner and flexes away from the pinion, causing failure. Tusker had some issues time after time with his and I think he has now gone Sals.

JC

**stig0000** · 17th April 2010, 10:29 PM

Originally Posted by justinc

Either fit a complete Disco1 rear differential (Cheap and easy to find and will bolt straight in only need to change tailshaft length) and lock it, or my preferrence is for a Sals and lock that.

JC

by a rear diff from a d1 do you mean like the full housing from disk to disk or just the diff center assembly

**long stroke** · 17th April 2010, 11:00 PM

Originally Posted by stig0000

by a rear diff from a d1 do you mean like the full housing from disk to disk or just the diff center assembly

I would say the whole housing, just by looking the p38 centre and housing both look different

TIM.

**Disco_owner** · 18th April 2010, 12:01 AM

Originally Posted by stig0000

by a rear diff from a d1 do you mean like the full housing from disk to disk or just the diff center assembly

yeah stig0000 , I believe that's what JC's talking about , I bought a whole rear Diff housing disc-disc from a late model d1 which included a Maxidrive locker for 1k and fitted it to my 1993 rrc.

**stig0000** · 18th April 2010, 09:03 AM

if we want to make it more simple so we no what were all talking about,, the front is a 2 pin diff and the rear is a 4,

well my rear diff assembly is completely fine so maby i could get a swap out of BOR maby for a d1 rear,, they have a wreak down there with a maxi rear locker in it im pretty sure

another thing the bottom plate that the spring sits on,, thats interchangeable so i can keep my current springs and not go to d1 springs, as i have only just fitted my lift yesterday???

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