Lot 4(Lot numbers are our reference, not an auction.)Porsche
911 GT3 Cup (997 B)2009
Fresh engine and gearbox rebuild by Schreurs. One hour on the dyno.
20 photos
- Year
- 2009
- Registration
- The Netherlands
- Category
- Motorsport, Cup & GT racing
Overview
A 997 generation GT3 Cup with a fully documented engine and gearbox overhaul by Schreurs Motorrevisie BV. Since the rebuild the car has only been run on a dyno: one hour on the engine, one hour on the gearbox. The complete list of work and photos of the revision are in the file below.
Specification
File DD-4- Chassis number
- WP0ZZZ99ZAS79****
- First registration
- 10/2009
- Engine hours
- 1 h (dyno testing)
- Gearbox hours
- 1 h (dyno testing)
- Car model
- 997 830
- Engine model
- M97/78
- Gearbox model
- G97/63, 6-speed sequential
- Dry weight
- approx. 1,150 kg
- Length / width
- 4,450 / 1,815 mm
- Wheelbase
- 2,355 mm
- Construction
- Six-cylinder boxer, water-cooled
- Bore × stroke
- 99.98 × 76.4 mm
- Displacement
- 3,598 cm³
- Compression
- 11.8 : 1
- Max. power
- 294 kW / 400 PS at 7,300 rpm
- Max. torque
- 400 Nm at 6,500 rpm
Engine revision10 items
Engine and gearbox overhauled by Schreurs Motorrevisie BV (motorrevisie.eu). Driven on the dyno only.
- Removal of engine and gearbox
- Disassembly, cleaning and diagnosis of engine and ancillaries
- Crankshaft measured and polished
- Connecting rods measured
- Cylinders honed, pistons measured
- Cylinder heads: valve seats machined, valves ground, guides and surfaces checked
- Engine assembled with Porsche Motorsport special tools
- Injectors tested
- Fuel tank and lines flushed
- Software checked and reset following the overhaul
Gearbox revision11 items
- Paddle inserts replaced
- Central unit rebuilt, including valves
- Sequential gearbox serviced
- Crownwheel & pinion 8-32
- Ratio sets 2nd 15-32, 3/4 18-31 and 20-28 (LFR)
- Selector fork, dog ring and dog ring gear (LFR)
- Clutch shaft, hub 3/4–5/6 (LFR)
- Pinion axial, centre and front bearings
- Differential and selector bearings
- Sealing kit, oil filter and Cup oil filter bracket
- Inner races 1st and 4th, spacers, nuts and crownwheel bolts
Assessed by
Yves den Doelder
25+ years in automotive valuations and brokerage
