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Powertec RPA

Field	Value
name	RPE RP Series V8
manufacturer	Radical Sportscars/Radical Performance Engines
production	Peterborough, England
configuration	72° V8, 32-valve (four-valves per cylinder), petrol engine
displacement	2.7 L
3.2 L
bore	2.7 L: 81 mm
3.2 L: 84 mm
stroke	65 mm to 71.5 mm
length	546 mm
width	513 mm
height	440 mm
weight	88-105 kg
block	Cast aluminium alloy
head	Cast aluminium alloy
valvetrain	32v DOHC (quad cam)
fueltype	Petrol
oilsystem	Dry sump
coolingsystem	Water-cooled
power	411-550 hp
torque	234-302 lb.ft
compression	2.7 L: 11.0:1
3.2 L: 13.5:1

3.2 L 3.2 L: 84 mm 3.2 L: 13.5:1 **RPE RP-V8 ** is the name of a naturally-aspirated 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 L 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 L model which retains the original bore and stroke of the K8 Hayabusa design and produces 430 hp. Second is the bored and stroked 3.2 L model which produces up to 500 hp.

Specifications

(from Radical Sportscars)

Engine

maximum motive power: 430 to
maximum revs: 10,500 revolutions per minute
steel flat-plane crankshaft
Twin pump lubrication system
Four scavenge pump dry sump system
Rotary vane coolant pump
Pre-engage starter motor
Belt-driven 45 amp alternator
45 mm eight-throttle body induction system

Bellhousing and clutch

Twin-plate dry clutch
Integral oil tank capacity: 9 L
Integral rear engine mount
Engine - gearbox spacing: 126 mm
Dry weight: 13.7 kg

Transaxle

Six-speed constant mesh manual transmission transaxle
Sequential shift - 6 forward, 1 back
Torque-biased limited-slip differential
Integral oil cooling pump
Pressure fed lubrication system

Dimensions

Length: 546 mm
Width: 513 mm
Height: 440 mm
Dry weight: 88-105 kg

References

"RPE Macroblock 2.7L V8 - technical data".
http://www.radicalperformanceengines.com/engines/Powertec-Macroblock-v8 {{Dead link. (December 2020)

Info: Wikipedia Source

This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.

automobile-engines automotive-technology-tradenames internal-combustion-piston-engines v8-engines gasoline-engines-by-model

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