RB engines

  

The RB engine is a 2.0–3.0 L straight-6 four-stroke petrol/gasoline engine from Nissan produced from 1985-2004.

  Both SOHC and DOHC versions have an aluminium head. The SOHC versions have 2 valves per cylinder and the DOHC versions have 4 valves per cylinder; all cam lobes move only one valve. All RB engines have belt-driven cams and a cast iron block. Most turbo models have an intercooled turbo (the exceptions being the single cam RB20ET & RB30ET engines), and most have a recirculating factory blow off valve (the exceptions being when fitted to Laurels and Cefiros) to reduce compressor surge when the throttle quickly closes. The Nissan RB Engine is derived from the six cylinder Nissan L20A engine which has the same bore and stroke as the RB20. All RB engines were made in Yokohama, Japan where the new VR38DETT is now made. Some RB engines were rebuilt by Nissan's NISMO division at the Omori Factory in Tokyo as well. All Z-Tune Skylines were completely rebuilt at the Omori Factory.

RB20 - 2.0 L (1998 cc, bore: 78.0 mm, stroke: 69.7 mm)

RB24 - 2.4 L (2428 cc, bore: 86.0 mm, stroke: 69.7 mm)

RB25 - 2.5 L (2498 cc, bore: 86.0 mm, stroke: 71.7 mm)

RB26 - 2.6 L (2568 cc, bore: 86.0 mm, stroke: 73.7 mm)

RB30 - 3.0 L (2962 cc, bore: 86.0 mm, stroke: 85.0 mm)

"D" indicates a dual overhead cam as opposed to a single overhead cam

"E" indicates the individual engine ports are electronically fuel-injected

"S" indicates the engine is carbureted

"T" indicates the engine has a factory installed turbocharger

"TT" indicates the engine has factory installed twin turbochargers

"P" indicates the engine runs on LPG(Liquefied petroleum gas)