1970 Porsche 911 S 2.2 Coupé


1970 Porsche 911 S 2.2 Coupé

Along with all the C-series improvments to the 911 line, the 1970 Porsche 911 S was upgraded to include a 180 bhp version flat-6. This further improved the performance credentials of the model which already had Fuchs light alloy wheels and bigger brakes.

Specific to the S model’s engine was a re-profiled camshaft, larger valves, better porting, higher compression and larger jets for the Weber carburetors. This resulted in 30 more horsepower for a total 180 horsepower and torque slightly improved. Redline was raised to 7300 rpm. Porsche fitted an ignition cutout that interrupted spark to the plugs near maximum rpm. One peculiarity of the 911 S was its lack of choke which required accelerator pumping for cold starts was usually enough for starting.

Chassis upgrades included a rear anti-roll bar, Koni shocks and ventilated discs which replaced the standard solid rotors,

For the S, special gear ratios were installed in the five-speed transmission including an overdrive in 5th gear. The higher ratios allowed for 0-60 in eight seconds.

In Detail

tags911s
submitted byRichard Owen
typeSeries Production Car
built atStuttgart, Germany
price $$ 8,750
price £/td>£3,990
engineFlat-6 w/Dry Sump Lubrication
positionRear Longitudinal
aspirationNatural
valvetrainChain-Driven SOHC
fuel feedMechincal Injection
displacement2195 cc / 133.9 in³
bore84.0 mm / 3.31 in
stroke66.0 mm / 2.6 in
compression9.8:1
power134.2 kw / 180 bhp @ 6500 rpm
specific output82.0 bhp per litre
bhp/weight166.05 bhp per tonne
torque172.2 nm / 127 ft lbs @ 5200 rpm
redline7400
body / frameUnit Steel
driven wheelsRear Engine / RWD
wheel typeAluminum Alloy
front tires185/70-15 Michelin
rear tires185/70-15 Michelin
front brakesVented Discs w/ Vacuum Assist
rear brakesVented Discs w/ Vacuum Assist
front wheelsF 38.1 x 15.2 cm / 15.0 x 6.0 in
rear wheelsR 38.1 x 15.2 cm / 15.0 x 6.0 in
steeringRack & Pinion
curb weight1084 kg / 2390 lbs
wheelbase2268 mm / 89.3 in
front track1374 mm / 54.1 in
rear track1355 mm / 53.3 in
length4163 mm / 163.9 in
width1610 mm / 63.4 in
height1321 mm / 52.0 in
transmission5-Speed Manual
gear ratios3.091:1, 1.778:1, 1.217:1, 0.926:1, 0.759:1
final drive4.428:1
top speed~231.7 kph / 144.0 mph
0 – 60 mph~7.8 seconds
0 – 100 mph~19.7 seconds
0 – 1/4 mile~15.5 seconds