Thread: 4bd1 into s3 6 cylinder

Yes and a CV front axle and all the other odd bits and pieces to to the conversion.

Be easier to buy a stage 1 V8 and put the diesel in it.

Garry

As Garry said. You really need a stage 1 for a donor to do this. This come up often on forums with the same out come usually.
You may find a S111 stage1 that's full of rust cheap for a donor to convert yours as an option. You will need both diffs as your six likely is 4.7 and stage is 3.54. The CV's are different as constant 4X4. The early CV's don't work well at all

look at it this way though, 4.7's with an isuzu...... will only do 60-70km/h, but would do that speed over or through anything!

you'd have to rev its tits off in low first to get the speedo to register movement

To summarise the previous posts:-
1. It is possble to put a 4BD1 into a six cylinder Series Landrover, BUT!

2. The gearbox will not stand it - the transfer case probably will, but no Series gearbox will. Your choice is to either adapt an Isuzu box to a LR transfer case (or fit another transfer case) or to fit a LT95 (or LT85 or R380 + 230T) as in the Stage 1 and 110 fitted with an Isuzu. Apart from the LT95 and LT85, these are not standard conversions, and even there the bell housing and flywheel housing are not exactly easy to come by.

3. If you go the LT95 etc route, you have a constant four wheel drive setup, so you have to either modify the transfer case for selectable four wheel drive, or fit a suitable front axle for constant four wheel drive, which would be the Stage 1 axle. Of course, it has a different ratio - see next point.

4. The six cylinder Landrover gearing is unsuitable for a 4BD1 - you need to fit higher ratio diffs, the 3.54 of the Stage 1 is probably suitable, depending on what transfer case ratio you end up with.

It does not appear to me to be a particularly good idea, and there would be numerous other relatively small problems apart form the major ones mentioned above. It would need a lot of "one off" design and fabrication work, which, if you are paying for it, will end up being very expensive. Even if you do all the work yourself, there is going to be a lot of expense, although the project could be interesting.

John

Considering the conversion costs involved (V8 County to Isuzu County), I imagine that the most economic way of getting a 4BD1 County is to buy one built that way, either 4 or 5 speed, and do it up if necessary (they seem to be in the $5 to $10k range these days)