Detroit locker for series one.

[Andrew Morris]

Looking for a Detroit locker and a Detroit tru trac that would fit a series one with standard axles.
Does such a thing exist and what are the key specs I need to look for?


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[langy]

The presumption is that you are wanting a replacement diff center for a Discovery built between 89 -99. Generally referred to as a 'Disco 1'.

'Series 1 ( & 2 & 3 or in roman numerals II & III) generally refer to the original Landrover products built from 1948- 85 (ish)

Back to your disco - prior to Chassis #SALL....MA081991, you'll be needing the diff version for 10 spline axles - after that they are 24 splines.

Search ' Trutrac' & 'Detroit locker' here on the forum - plenty of information

& Welcome.

[wrinklearthur]

Looking for a Detroit locker and a Detroit tru trac that would fit a series one with standard axles.
Does such a thing exist and what are the key specs I need to look for?

Hi Andrew

Welcome aboard to the forum.

As Langy has said, Series I, II and III's are the earlier and original Land Rovers, to stop confusion we tend to refer to the Discovery series one as being a D1.

Early 3.54 : 1 ratio diffs were 10 spline and fitted to Stage one series three's, early Range Rover's and early Discovery's. Tru Trac centres are available for those diffs.

The mounting face for the 3.54 ring gear is further away from the centre line of the pinion, than a 4.7 when fitted into early Land Rover series one.
Because of the diameter of the smaller pinion in the 4.7's the carrier face offset then needs to be closer to the pinion centre line.
I have fitted a ring gear and pinion from a 135 Massey Ferguson into a 165 Massey Ferguson, to overcome the differences in pinion diameters, I made a spacer to fit between the carrier and the ring gear, but I would not do that on the already stressed and weak Land Rover diff.

Try this link to this mob, they may have something for you.

eBay Australia: Buy new & used fashion, electronics & home d
.

[isuzutoo-eh]

Be aware that a detroit locker will stress the axles greatly, and if an axle breaks the locker can be damaged.
I think Ashcroft Transmissions do a spacer for fitting aftermarket centres to the 4.7 cw&p.

[LowRanger]

Do yourself a favour,and spend a bit more and fit aftermarket axles.The standard axles are like celery sticks.Loading them with a Detroit is asking for trouble.

[Andrew Morris]

Thanks. Vehicle is a series one, not a discovery one. I have heard the axles aren't real strong. To strengthen them, can you just fit new shafts or does the whole axle need replacing?


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[wrinklearthur]

Thanks. Vehicle is a series one, not a discovery one. I have heard the axles aren't real strong. To strengthen them, can you just fit new shafts or does the whole axle need replacing? ---
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Hi Andrew

The assumption here now is, you have the semi floating axles in the rear diff housing.
To keep the vehicle looking original, I would stick to those semi floating axles
and for a bit more traction only use a Tru Trak in the rear.
The Tru Trak by the way they work are a bit gentler on axles and the rest of the drive train.
As far as I know, after market, high strength, semi floating axles are not available as off the shelf replacements.
.

[Andrew Morris]

Thanks. Advice appreciated


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[123rover50]

I fitted fully floating S2 axles and disco diff into the original S1 housing.
You have to bolt on S2 hubs of course, and make a spacer from an old buggered drive flange to fit between the hub and axle flange. Thats all it needs. Then bolt it up with longer bolts.
I will post a pic if you want one. Its hardly noticeable.
Keith

[wrinklearthur]

I fitted fully floating S2 axles and disco diff into the original S1 housing.
You have to bolt on S2 hubs of course, and make a spacer from an old buggered drive flange to fit between the hub and axle flange. Thats all it needs. Then bolt it up with longer bolts.
I will post a pic if you want one. Its hardly noticeable.
Keith

The difference in the half shaft, axle length, is about three quarters of an inch per side longer, from between the series one and to the series two.

Swapping the wider diff housing over from a short wheel base series two into the series one as the spring centre bolts are the same distance apart in both models, but that is a lot more work, although it does makes the obtaining some fiddly bits for the brakes a lot easier.

This then opens up the possibility of fitting fine spline axles into a series one, without loosing the visual appeal.

Next step, could be the fitting of disk brakes, but where do you stop?
.