Editing Z31/engines php (section)

=== RB20DET Series Specifications ===

![RB20DET engine](images/Engine/RB20DET.jpg)

The 200ZR had the last straight six offered in a Z, the RB20DET. These early twin-cam RBs (identified by their red ribbed cam cover) run a relatively low 8.5:1 static compression ratio, 24 valve DOHC, and a ceramic wheeled turbocharger with an air-to-air intercooler fed by the 200ZR’s hood scoop. It also used a NICS dual-stage twin-runner ignition system, a hot-wire airflow meter, and direct-fire ignition.

The RB20DET has a cast iron block and aluminum head. All RB engines have belt-driven camshafts and all cam lobes move only one valve.

===== RB20DET Specs: =====

| Spec | Value |
|---|---|
| Displacement | 1998 cc (122 cu. in) |
| Bore and Stroke | 78.0 X 69.7 |
| Compression Ratio | 8.5:1 |
| Horsepower | 180 hp at 6400 rpm |
| Torque | 23.0 kg-m (174 ft-lbs) at 3600 rpm |

===== RB20DET Camshaft Specs: =====

| Spec | Value |
|---|---|
| Duration Intake | 248° |
| Duration Exhaust | 240° |
| Lift Intake | 7.8mm |
| Lift Exhaust | 7.8mm |