Powertec RPA

RPE RP Series V8
Overview
Manufacturer	Radical Sportscars
Production	Peterborough, England
Layout
Configuration	72° V8 petrol engine
Displacement	2.7 L (164.8 cu in) 3.2 L (195.3 cu in)
Cylinder bore	2.7 L: 81 mm (3.19 in) 3.2 L: 84 mm (3.31 in)
Piston stroke	65 mm (2.56 in) to 71.5 mm (2.81 in)
Cylinder block alloy	Cast aluminium alloy
Cylinder head alloy	Cast aluminium alloy
Valvetrain	32v DOHC (quad cam)
Compression ratio	2.7 L: 11.0:1 3.2 L: 13.5:1
Combustion
Fuel type	Petrol
Oil system	Dry sump
Cooling system	Water-cooled
Dimensions
Length	546 mm (21.5 in)
Width	513 mm (20.2 in)
Height	440 mm (17.3 in)
Dry weight	88 kg (194 lb)

RPE RP-V8 is the name of a V8 engine series developed by Radical Sportscars in Peterborough, England for use in the SR8 sportscar. The design is loosely based on the 1.3 litres (79.3 cu in) inline-four engine produced by Suzuki for their Hayabusa motorcycle. The company have designed their own cylinder block and use existing Suzuki cylinder heads. The two cylinder banks are inclined at 72-degree angle. Lubrication is provided by a dry sump system. The engine is mated to a purpose-built transaxle designed by Quaife.

There are currently two versions of the engine available, which have been updated for 2011. First is the base 2.7 litres (164.8 cu in) model which retains the original bore and stroke of the K8 Hayabusa design and produces 430 horsepower (321 kW; 436 PS). Second is the bored and stroked 3.2 litres (195.3 cu in) model which produces up to 500 horsepower (373 kW; 507 PS).

(from Radical Sportscars)

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Wikipedia