1956 Porsche 550 Spyder 1500 RS
"LC-23-99"
Serial Number: 550-87
Specifications
Engine
"LC-23-99"
Serial Number: 550-87
Specifications
Engine
- Engine Number: 547/2 SN# 90093
- Type 547 Four cylinder 4 cycle, box motor, air cooler, horizontal opposed, 4 overhead camshafts
- Power Approx. 110 HP @ 6200 RPM
- Bore 3.35 in (85 mm)
- Stroke 2.59 in (66 mm)
- Piston Displacement 1498 cm actual, from formula cubic 1487 cm
- Compression ratio 9.5:1
- Crankcase Aluminium
- Cylinders Aluminum hard chromed walls
- Cylinder head Aluminum
- Valves per cylinder 1 intake, 1 exhaust
- Valve operation 4 camshafts driven by 2 vertical shafts
- Crankshaft Hirth Full roller bearing
- Pistons Aluminium
- Air blower drive V-belt, crankshaft to generator shaft
- Crankshaft-blower ratio 1:1
- Air volume 1100 ltr/sec at 6200 RPM
- Engine lubrication Dry sump, with oil cooler and oil filter in main current
- Firing order 1-4-3-2, 2 plugs per cylinder
- Distributor drive Dual Camshaft
- Spark plugs Temperature Range 260 – 280 C
- Carburetors Dual Solex 40 PJJ
- Muffler 4 into 1 exhaust pipe
- Clutch Fichtel & Sachs, K 12 Porsche Special
- Transmission 4 forward speeds, helical gears, synchronized, 1 reverse
- Gear Ratio
- 1st gear 13:33 - 1C
- 2nd gear 17:30 - 2A
- 3rd gear 22:27 - 3B
- 4th gear 25:24 - 4B
- Reverse gear 1:3.56
- Final drive ratio 7:34 (airport)
- Top speed Approx. 116 mph (187 km/h) with factory gearing.
- Shifting Ball and socket and push rods
- Differential Spiral bevel pinion, ZF lock type differential.
- Frame Tubular, seamless steel tubing, with extra tube reinforcement
- Front spring 2 transverse, 4-leaf adjustable torsion bars
- Rear spring 1 round (?)mm torsion bar per side
- Front sway bar 15mm
- Shock absorbers Fichtel & Sachs, telescopic hydraulic
- Front: 26 x 90 (includes sway bar link)
- Rear: 36 x 140 HA
- Front wheel suspension Longitudinal suspension arms, outside needle bearings
- Rear wheel suspension Swing half axles
- Steering VW magnesium cover, special worm gear with divided tie rods
- Steering ratio 1:14.15
- Operating brakes Hydraulic foot brakes to all four wheels
- Parking brake Hand lever operating cable to rear wheels
- Brake drums 11.0236 in (280 mm) ATE Dual Cylinder Dual Leading Shoe Front. ATE Single Cylinder Rear.
- Brake lining width Front 2.362 in (60mm), Rear 1.57 in (40 mm)
- Total effective surface Rear 115 sq in (744 sq cm)
- Wheels 16 in x 3..5 in Bi-Metal
- Tires front 5.00 – 16 in
- Tires rear 5.25 – 16 in
- Wheel base 83 in (2100 mm)
- Front track 50 in (1290 mm)
- Rear track 49 in (1250 mm)
- Length overall 11 ft 9 in (3600 mm)
- Width overall 5 ft 1 in (1550 mm)
- Height (unloaded) 3 ft 4 in (1015 mm)
- Minimum ground clearance Approx. 6 in (150 mm)
- Minimum turning circle Approx. 36 ft (11 m)
- Dry weight Approx. 1300 lbs (590 kg)
- Weight without passengers (DIN) Approx. 1510 lbs (685 kg)
- Race weight (FIA) Approx. 1410 lbs (640 kg)
- Permissable total weight Approx. 1984 lbs (900 kg)
- Permissable axle weight
- Front: 992 lbs (450 kg)
- Rear: 992 lbs (450 kg)
- Battery Varta Special 6 V/70 amp
- Starter Bosch EED 0.4/6 L 18
- Generator LI 20/1 P 45
- Voltage regulator Bosch RS/UA 160/6/15
- Distributor Dual Bosch 2 V 2/6 K 10
- Coil Dual Bosch TK 6 A/5
- Spark plugs Bosch W 260 T 2 – W 270 T 17 or equivalent type
- Ignition switch Bosch SH/ZS 1/1
- Starter switch Kirsten 5232
- Light switch Kostal 7473/3 with voltage regulator
- Beam deflector switch Bosch SHNF 2/1
- Blinker unit SWF 2 x 20 watt, Type BGA
- Blinker switch Bosch SH 12/27 HI (2 circuit) without bulb
- Brake light switch Teves (On master brake cylinder)
- Head lights Bosch LE/YE 180/X 2/7
- Blinker and park light Bosch LE 14/16 N 2
- Tail, brake, blinker & back up lights Bosch LE 14/16 N 1
- License plate lights SWF EL 153-1
- Horn Bosch HO/EZ 32/32 D 1 or D 2