Rear locker on a Series

[lcater]

I am planning on putting a locker (true trac type) in the rear diff of my SIII. My question is this. How will it perform? There is no centre diff on a series so if you lose traction in the rear won't all the power transfer to the front? And hence make a rear locker useless on it's own.
Or is there an equal split between front and rear?
Tks

 

[JackW]

Both front and rear driveshafts turn at equal speeds in a Series truck when they are locked together as you engage four wheel drive. The center diff in later model Rovers allows the front driveshaft to turn at a different speed which is what has to happen when you go around a turn on pavement - other wise the tires have to absorb the speed difference between the front and rear axles.

The rear driveshaft is always going to turn in a series truck so your Truetrac will work just fine.

 

[LR Max]

Nay.

The 4WD system of a series is the same as almost every American 4WD vehicle.

2WD (duh)
4WD hi (power is split 50/50 front and rear always with high range gears)
4WD low (power is split 50/50 with low range gears)

Don't bother wasting your time with a true trac. Its still a limited slip and if you are planning on going off road, then go ahead with a full locker (either detroit or ARB, pick your poison). If you lock, you WILL have to upgrade to HD shafts. Other peoples here will recommend a certain vendor.

I run a detroit in the rear of my 109. It is absolutely fabulous. I dunno about the 88s, but my 109 lifts tires all the time and the LSD don't do crap then.

If you are wanting to do a lot of wheeling with your series, then go locker. Its worth the extra 100 bucks. If its mainly a street pounder then don't worry about installing anything.

Either way, you'll need upgraded shafts.

 

[KevinNY]

Jack is right, see www.seriestrek.com for axle options

 

[noee]

I would agree with LRMax wrt the TT. I have a Jack Mac manual locker in the rear of my 88 and yes, even with parabolics, it lifts wheels all the time (hard to believe, heh? ) I also have the HD 24 spine shafts. A locker in the the rear end of a series truck makes for a formidable combination, even more so with a very aggressive tire.

I have a TT in the front of my D2 and while stronger than the stock diff, offers very little help here on East Coast Wheeling. I wish I would've gone with a true locker up front.

 

[lcater]

Thanks folks. My Series is only a trail rig, and she pulls through in most situations (BFG MTs, parabolic, sliders) but I like the extra punch from a locker. I'll probably going Detroit diff (non true trac). Since I just twisted my axles (see Towing accident), and I have a few spare diffs lying around, it seems like a good time to do it.
Tks.

 

[LR Max]

Do you have a coiler 3rd member laying around? If so, then that is the one you want to build. Take a 4.7 R&P, a coiler 3rd member, a 24 spline detroit, and some HD 24 spline shafts.

PORC can get you a 24 spline detroit locker for under 500 shipped. The 24 spline locker can easily be installed into the coiler housing and so can the 4.7 R&P (I think).

 

[lcater]

Nope, just the leaf sprung Series. I did have a very nice 110 with 300tdi but with a family of 5 it wasn't so practical (not that the series is), and since I already had the series, the 110 went. I prefer the series in the bush, she's an exmod so trees and rocks only enhance her appearance.
Thanks again.

 

[Yorker]

PORC can get you a 24 spline detroit locker for under 500 shipped. The 24 spline locker can easily be installed into the coiler housing and so can the 4.7 R&P (I think).

You'll need the spacer for the ring gear too to make that work.

 

[rdoane]

PORC can get you a 24 spline Detroit locker for under 500 shipped.

$471 to Clemson, SC.

 

[LR Max]

You'll need the spacer for the ring gear too to make that work.

Indeed. But it would probably be a worthwhile upgrade to go from 10 to 24.

 

[Yorker]

Definitely! if you are going to screw around with a locker in the back of a Series upgrade to 1.24" 24 spline shafts while you are at it. Especially considering the fact that a series puts more stress on the rear axles due to the 2wd option. Either way if you use coiler pumpkins and 4.7 series R+P you'll need the spacer.

I don't think I'd even bother with a locker with 10 spline stuff. Since I was stuck with 10 splines I went with a TT F+R which I felt was a decent compromise for my uses, I often use chains though where I go so the TT was all the enhancement I felt I needed. With brake modulation I've been able to make it work a lot better than people had led me to believe BUT they are still no locker.

An overall better solution would be toyota conversion or TLC axles all together. Funny how this stuff snowballs when you start this cycle eh?:banghead:


Since he has a SWB it might be worth the trouble to get a Salisbury from someone like http://britrest.com/Specials/specials_used.htmand then plunk a Detroit in it rather than fool around with the crap Rover spiral bevel diffs... C$650 for the sals + what? $550 for the Detroit and fitting kit? Later he can upgrade the sals shafts further if he feels the need. And so the snowball rolls on... Heck if this an off road only rig he could weld the spider gears and save the $...

 

[Gordo]

I run 10 spline ARBs in my RRC and havent had any problems. I only use them when I need them though. I also wheel mostly mud and muck so it is much more forgiving than say rocks. Im running 34 LTBs.

 

[Yorker]

I run 10 spline ARBs in my RRC and havent had any problems. I only use them when I need them though. I also wheel mostly mud and muck so it is much more forgiving than say rocks. Im running 34 LTBs.

Some people are lucky I guess! A friend of mine has a lightweight with a 3.5l and detroit in the rear 10 spline. It has held up so far but I doubt it will in the long run.

I'd prefer to overbuild the whole works myself.

 

[jvelador]

Call Great Basin Rovers, GBR. I spoke to Bill last year about options and he stated that if we can wait, he'd have lockers he designed ready to ship early this year.

Javier

 

[KevinNY]

I don't get it, wait for what? You can get a detroit or arb for 10 or 24 spline stuff and seriestrek axles for either spline that drop in.

 

[Yorker]

Probably a Lock Right, Bill was talking about that for a while. Not a real viable solution IMHO considering the carrier. Aussie Locker were going to look into the lunch box locker too but they aren't going to until '08.

I wouldn't bother with that option either even if it was available.

I've waited for Bill for a lot of stuff- he was supposed to have 10 spline HD axles a while ago- Luckily Mercedes Jim came up with them, and in a much shorter time frame to boot!

I like Bill but you could really grow old waiting for some of the stuff he talks about.

 

[Gordo]

yeah I think luck and terrian play a big role. the mud in fl is very forgiving. Ive ran 10 splines for years without a problem, but lockers change everything, which is why I only use them when I need them. Luckily the new style ARB 10 spline can be upgraded to 24 spline rather easily, albiet 250 bucks each. I just got the lockers so cheap I couldnt pass it up. gordo.

 

[Ron]

Len,

I have a ten spline ARB sitting around. I would NOT use a coiler housing. Just use the stock housing with the ring gear spacer (have this too) and go with that. Whether you go 10 or 24 the stock series housing will work. Now this being said, I don't see the point to super HD series axles as the stock 4.7 ring gear is crap too.

A salisbury will fit in a SWB truck but you have to shorten the rear driveshaft to the point that it is really short and reweld on the spring perches.

Mildly upgraded 10 or 24 spline axles and a locker is fine. I would also not get a detroit if you drive it on the street much. It will bother you and in snow it is not fun without putting her into 4wd.

 

[LR Max]

I've seen lock rights/aussies mainly used in the front axles of jeeps, and they work unbelievably well. However, due to the lack of power steering in series rovers, I do not think the lunchbox locker could be used in this application.

For auto lockers, the longer the wheelbase, the less they are noticed. I never notice my detroit in the rear axle of my 109. Once every 8~10 months it goes "POP" and thats about it. Otherwise it is invisible on the street.

If you've got a 109 with the salisbury rear axle, and you like off road, the detroit is so cheap. Last I looked it was like, 350 (GBR will sell it to you for more, if you'd prefered to have your ear talked off and get the same product but costs more).

I dunno about the 88s but every SWB jeep with a rear locker doesn't have too much trouble with it on the road. I mean, if you are REALLY a candy ass then you'll have trouble but overall it won't be too bad.

As for the snow comment, my 109 is now more capable in the snow than before.