Master
I was out having a bit of a fang around with my brother in a 200tdi defender and a mate with the same car, main difference is a detroit rear diff locker in the rear of my brothers car.
going along rutted out firetrails and muddy sections after the rain, i could notice a huge difference that the rear difflocker made. the stock central difflock seemed really ineffective, especially when the wheels began to spin when climbing steep rises in bogs and muddy ruts.
it got me thinking, i have a stock series 3 that can go pretty hard in that sort of siutation, but fitting an aftermarket rear difflock would seem to make it go a lot harder. has anyone done this before? is it worth the effort/money?
my understanding is that it would cost around the 2000 mark to get one fitted.
any opinions would be greatly appreciated.
Swaggie
Comparing a center and rear difflock are 2 different beasts. A defender with the center diff locked will have the same drive effect as a serites 3 in 4wd.
As to rear diff locks, they aren't particularly common for series vehicles, and I don't know if anybody still makes them. So you have to find one first. Does your series 3 have a saulsbury or rover diff in the back. if it's a rover one a difflock will just snap axles faster.
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Master
its a stock SWB, which i believe is not the saulsbury. i have heard about the back axles snapping easily, but i didnt really beleive it until it happened.Originally Posted by Phoenix
by the sounds of things its not particularly worth doing to this car, in hindsight it would be much better to keep stock i suppose
TopicToaster
You can buy my Stage 1 with twin ARB lockers for $2500..... cheaper than 1 diff lock...
RoverLord
ARB make diffs to suit. but thems exxcy
Dave
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Master
I would hunt around for one of McNamara's old bolt operated diff locks. You can pick them up for a couple of hundred dollars, and come with 24 spline axles.
Master
never heard of these, what can can you tell me about them? are they hard to come by?
Master
I found this image a while ago for another thread:
Hopefully this should explain everything you want to know. You do see them popping up for sale every now and then. You also may want to ask around to see if anyone around you has one they want to sell.
Swaggie
As with any 4x4, a locker will make a HUGE difference.
I have a rear Maxi-Drive locker in my IIA (salisbury). Worth every cent imho, and has been used many, many, many times.
MD have closed, so your current options are:
Manual:
ARB
McNamara (air operated locker)
McNamara "spanner" locker (2nd hand only)
Auto:
detroit
lockrite
and probably a few more...
There are a lot of reasonably priced 2nd hand 10-spline ARBs around. However you will probably need to upgrade the axles - at least $500-600.
I personally wouldn't bother with the manual McNamara locker. Unless you only used it occasionally, I am sure it would get very annoying very quickly...
Master
I would disagree. Probably the cheapest option. You should be able to pick one up with the axles that are needed for less than you could buy a 10 spline ARB diff lock, then you need to the compressor to run the ARB! Generally every one that I know that had these would lock them while they were letting their tyres down, and then unlock them at the end of the day when they were pumping their tyres up, this never seemed to cause any issues. I used to leave a 5/8 spanner on my dash, so if I ever got in trouble, I didn't have to go rummaging around in the tool box to get it to lock the diff. They are very simple so there is nothing really to go wrong.
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