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

tags 911s
submitted by Richard Owen
type Series Production Car
built at Stuttgart, Germany
price $ $ 8,750
price £/td> £3,990
engine Flat-6 w/Dry Sump Lubrication
position Rear Longitudinal
aspiration Natural
valvetrain Chain-Driven SOHC
fuel feed Mechincal Injection
displacement 2195 cc / 133.9 in³
bore 84.0 mm / 3.31 in
stroke 66.0 mm / 2.6 in
compression 9.8:1
power 134.2 kw / 180 bhp @ 6500 rpm
specific output 82.0 bhp per litre
bhp/weight 166.05 bhp per tonne
torque 172.2 nm / 127 ft lbs @ 5200 rpm
redline 7400
body / frame Unit Steel
driven wheels Rear Engine / RWD
wheel type Aluminum Alloy
front tires 185/70-15 Michelin
rear tires 185/70-15 Michelin
front brakes Vented Discs w/ Vacuum Assist
rear brakes Vented Discs w/ Vacuum Assist
front wheels F 38.1 x 15.2 cm / 15.0 x 6.0 in
rear wheels R 38.1 x 15.2 cm / 15.0 x 6.0 in
steering Rack & Pinion
curb weight 1084 kg / 2390 lbs
wheelbase 2268 mm / 89.3 in
front track 1374 mm / 54.1 in
rear track 1355 mm / 53.3 in
length 4163 mm / 163.9 in
width 1610 mm / 63.4 in
height 1321 mm / 52.0 in
transmission 5-Speed Manual
gear ratios 3.091:1, 1.778:1, 1.217:1, 0.926:1, 0.759:1
final drive 4.428:1
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