2007 Porsche Daytona Prototype Engine

From 2005 through 2007, Rob and Chris Dyson ran a limited Grand-Am schedule in partnership with Howard-Boss Motorsports and Crawford Race Cars. The 2007 Rolex 24 was Rob Dyson's eighteenth.

Porsche has more than 28,000 race victories since they started competing in 1951. They build race cars and engines to increase development knowledge to be incorporated into the evolution of production vehicles. Porsche offers technical support to its customers at the track and brings the aura and history of the Porsche brand to almost every motorsports series worldwide.

The Porsche 3.8 liter power plant is a production based naturally aspirated engine built to Grand American Road Racing specifications: maximum engine RPM, throttle body size/diameter, valve lift and size and maximum compression ratio are specified. Engine air box and air inlet restrictions are also required. Grand American approves all components and parts prior to being used in competition and the parts must be for sale to the public for sale.

Technical Specifications
ENGINE CONFIGURATION 6 cylinder Porsche boxer
SIZE 3795 cc
BORE AND STROKE 76.4mm stroke 102.7mm bore
HORSEPOWER 510 bhp @ 7,500
TORQUE 435 N/meters @ 7,500
RED LINE 9,000 rpm
INDUCTION Naturally aspirated
ENGINE MANAGEMENT Bosch MS 3.1
DATA Motec display w/data recording
LAP TIMING lap trigger w/display recording
INTAKE 6 individual throttle valves
BATTERY 12v 50 ah
ALTERNATOR McLaren Electronics 110 amp
LUBRICATION Dry sump w/heat exchanger
COOLING Water cooled
FUEL INJECTION Sequential multi-point Bosch MS 4.0
FUEL Spec 100 octane unleaded racing gas