This LRO reader emailed LRO.email@example.com enquiring about Land Rover's 2.3-litre petrol engine.
Where can I find out about Land Rover’s 2.3-litre petrol engine?
Keith Shaw, Margate, Kent
I’m assuming you mean the engine used in the Series III. The so-called 2.25-litre (or two and a quarter) engine in the Series III had an actual cubic capacity of 2.286 litres and started out in life with a three-bearing crankshaft. This design was later changed to a stronger, five-bearing crankshaft layout, for which the unit was designated the 2.3-litre engine. It had the same 2.286-litre capacity, and later became better known as just the five-bearing engine.
The advantage of the 2.3 is in its improved bottom end strength. The flywheel housing, flywheel and crankshaft rear bearing seal were also modified, though only to accommodate the new crankshaft layout.
Other minor changes included a change of distributor on petrol engines and a damped crankshaft pulley on the diesel.
So, all the mechanical information is available in the workshop manual, Land Rover Series III Repair Operation manual 9AKM3648 edition 4 onwards), in the five-bearing engine supplement at the back. It’s available from parts suppliers.
This workshop advice appeared in the October 2007 issue of LRO. Back issues are available to download on digital devices here.