Engine

Model : Rover V8 - Standard unit sourced from 1994/5 Range Rover LSE (Long Wheelbase), the particular example used is one of the very last prior to the new shape Range Rover being introduced.  As such it exhibits some of the features of the newer models.  For example it has a single serpentine belt drive, rather than the multiple single v groove as used previously.  The water pump is different, the front timing cover is different, the oil pump is driven directly off of the camshaft and not from the base of the distributor.

Capacity: 4275 cc For some reason Land Rover call it a 4.2 Litre even though it is nearer 4.3, from what I have found, the only reason was to differentiate from the TVR unit which is exactly the same capacity but is referred to as a 4.3.  This particular Capacity was only ever available in the Long wheelbase Range Rover.

Short engine rebuilt as standard, as the standard 4.2 is a lower compression ratio (8.94:1) than the 3.5 or 3.9 which makes it ideal for forced induction.  Therefore I rebuilt the engine as standard using all of the standard components such as camshaft, heads, valves etc.

Modified ancillaries etc.

Lucas 20 AM air flow meter, This replaced the standard 5 AM as it allows for the increased airflow associated with the increase in horsepower.

Power steering pump removed (Replaced with free wheeling pulley) As the vehicle does not have power steering there as no sense in keeping the power steering pump.  I did think about keeping it to drive a hydraulic winch but as I do not yet have a winch installed I decided to remove it.

Air conditioning compressor removed (replaced with Supercharger), I thought about having air-con in the lightweight, that would certainly be different. But no, it had to be removed to make way for the supercharger.

Oil catch tank fitted to crankcase breather system.  As the system is now of forced induction, the original crankcase re-circulation system used to help reduce emissions, was no longer suitable.  This is because as the entire inlet circuit will be pressurised, therefore the crankcase would also be pressurised and result in blow-by.

Cooling 

The engine is cooled by means of a special purpose built radiator.  The radiator is constructed from standard Range Rover radiator end caps but then with a special core that is a lot narrower than the original Range Rover unit but more than twice the thickness.