Thread: series 3 drive train

This is one way of looking at it: http://www.aulro.com/afvb/series-2-2...ffs-story.html

There are three alternatives commonly done.

1. Overdrive. Simple, easy, quick, but fairly expensive and a bit fragile. Added advantage of being able to split gears.

2. 3.54 diffs. A bit more work, especially with a 109, probably cheaper, not the best if used extensively offroad or for towing, but manageable (more use of low range).

3. High ratio transfer case conversion. Probably most expensive and most work, but also probably the most satisfactory all round.

John

Fitting either 3.54 diffs or high ratio transfercase will yield much the same results gearing wise. The 3.54:1 diffs,unless Salisbury from a self service wrecker would be cheaper and easier to fit, in addition to being a bit stronger than the standard 4.7:1 ratio.
Either solution generally leads to reduced gearbox longevity, because to get X amount of torque at the wheels, it has to be generated at the gearbox instead of being multiplied by the diff or transfercase gearing.
Bill.

I've fitted stage one V8 axles to my series 3 and also have overdrive fitted. It certainly transformed the vehicles performance and fuel economy, the overdrive works well on the highway at speed but not so good on twisty roads with steep hills as the holden motor runs out of puff
It has also made the vehicle quieter as the engine doesn't scream so much

I'm hoping with the 300tdi conversion about to be started that it will have enough grunt to pull up the hills and save some $$$ on fuel

if you're going the tdi route.

I remember reading somewhere about the lt77 being mated to the series tcase.

changing just the engine doesnt make the vehicles speed change much and IMHO unless you derate the new donk the fairys not going to last.

Originally Posted by Blknight.aus

if you're going the tdi route.

I remember reading somewhere about the lt77 being mated to the series tcase.

changing just the engine doesnt make the vehicles speed change much and IMHO unless you derate the new donk the fairys not going to last.

Ashcroft transmissions do the kit for GB£360.00 plus shipping Ashcroft Transmissions - Series 5 speed kits but remember if you have a PTO winch etc, you lose the PTO hole.

Your other option is to just use the original Defenter LT77/LT230 combination.

Back to the original post, topping out at 90KPH sounds wrong to me. My SIII 202 will keep going over 110 until the shakes and noise get to me and I chicken out.
Am running original ratio diffs and standard t/f or so I believe.

The "sweet spot" however seems to be 85-90KPH.