The 16-valve 944 S
The 944 S of model years 1987 and 1988: the range's first four-valve engine, derived from the 928 S4.
In short: In 1987 the 944 S brought four valves per cylinder and twin overhead camshafts to the 944 for the first time. It was built only in model years 1987 and 1988.
Engineering
The cylinder-head technology came from the 928 S4. Further changes were a revised camshaft drive with a self-adjusting timing belt tensioner, a magnesium intake tract and valve cover, a larger oil sump and a revised exhaust. The alternator was rated at 115 amps.
Club Sport
A Club Sport package (M637) was available, as were light forged 16-inch wheels. The 944 S was raced in Canada, Europe and a US series.
Place in the range
In 1989 the 3.0-litre S2 replaced the S. Performance and power figures vary.
The 16-valve engine’s belt drive differs from the two-valve engine – use the matching workshop manual before any work.
Technical values
Only work with the workshop manual and the correct tools. Do not use unverified values without checking them – wrong tension values can destroy the engine.
| Value | Figure | Condition | Status | Source |
|---|---|---|---|---|
| 944 S: engine / power | M44/40, 188 hp (DIN) at 6000 rpm | Other figure: 190 hp (140 kW) | unverified | [2] |
| 944 S: displacement / bore × stroke | 2479 cc / 100 × 78.9 mm | – | unverified | [2] |
| 944 S: compression ratio | 10.9 : 1 | – | unverified | [2] |
| 944 S: torque | 230 Nm at 4300 rpm | – | unverified | [3] |
| 944 S: 0–100 km/h | 7.9 s | – | unverified | [3] |
| 944 S: top speed | 228 km/h | – | unverified | [3] |
| 944 S: kerb weight | 1280 kg | Standard (DIN or EU) not stated | unverified | [3] |
Sources
- Secondary source Porsche 944 (Abschnitt «Production»)
Secondary source. Production tables per model year, no book citation; totals are partly inconsistent.
- Secondary source 944 specification tables
Data tables 944, Turbo, S, S2 (1983–1991).
- Secondary source Porsche 944
Secondary source. Covers special series (Turbo S, Celebration Edition) among others. «Technische Daten» table with torque, 0–100 km/h, top speed and kerb weight, without its own reference.