The Perkins Prima was the first turbocharged high speed direct injection engine fitted to a passenger car and is an ideal powerplant for a series Land Rover. The engine has a power output of around 80 BHP and 115 lbf ft^-1 of torque, so it's more powerful than a Land Rover 4 cylinder engine. The engine is free reving and it works with the standard Land Rover gearing. Series Land Rovers with their original engine's are far from economical to run, the Prima is quite efficient even by today's standards and can possibly return double the mpg that the series 4 cylinder petrol engine did.

This Engine conversion doesn't require any modifications to the Land Rover bulkhead or chassis. The engine mounts are designed to bolt to the Prima block and the Land Rover Chassis mounts. The Engine Adapter plate is designed to bolt to the Prima engine and the Land Rover bellhousing. People have told me they carried out the conversion in a day, but generally it takes a few days. Once the engine is bolted in place a few modifications are required to the original original Land Rover systems to connect them to the Prima engine. If you can replace an engine you can probably carry out an engine conversion.

The drivability and reliability with a converted vehicle should be excellent. I drive a Prima Powered Land Rover as everyday car, the Montego engine has improved fuel consumption and performance considerably.

A good source of information is yojimbo's prima conversion forum,http://www.yojimbo.org.uk and Wittsend's pages about his Land Rover conversion are also quite good http://nhua.co.uk