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Reciprocating internal combustion engine
Nissan RB engine
RB26DETT in an R34 Skyline GT-R
Overview
Manufacturer
Nissan (Nissan Machinery)
Production
1985–2004 (original) 2019–present (new production)[1][2]
Layout
Configuration
Straight-six
Displacement
2.0 L; 121.9 cu in (1,998 cc) 2.4 L; 148.2 cu in (2,428 cc) 2.5 L; 152.4 cu in (2,498 cc) 2.6 L; 156.7 cu in (2,568 cc) 2.8 L; 169.0 cu in (2,770 cc) 3.0 L; 180.8 cu in (2,962 cc)
Cylinder bore
78 mm (3.07 in) 86 mm (3.39 in) 87 mm (3.43 in)
Piston stroke
69.7 mm (2.74 in) 71.7 mm (2.82 in) 73.7 mm (2.90 in) 77.7 mm (3.06 in) 85 mm (3.35 in)
Cylinder block material
Cast iron
Cylinder head material
Aluminium
Valvetrain
SOHC 2 valves x cyl. DOHC 4 valves x cyl. with NVCS
Compression ratio
7.8:1-10:1
Combustion
Turbocharger
Single Garrett T3; Twin Garrett T28-type ceramic with intercooler (RB26DETT)
Fuel system
Carburetor Electronic Fuel injection
Management
Hitachi, NICS, ECCS
Fuel type
Gasoline Autogas LPG
Cooling system
Water-cooled
Output
Power output
94–500 PS (93–493 hp; 69–368 kW)
Torque output
142–540 N⋅m (14–55 kg⋅m; 105–398 lb⋅ft)
Chronology
Predecessor
Nissan L engine
Successor
Nissan VQ engine Nissan VR engine
The RB engine is an oversquare 2.0–3.0 L straight-6 four-stroke gasoline engine from Nissan, originally produced from 1985 to 2004. The RB followed the 1983 VG-series V6 engines to offer a full, modern range in both straight or V layouts.[3] It was added to a new engine family name PLASMA (Powerful ＆ Economic, Lightweight, Accurate, Silent, Mighty, Advanced).
The RB engine family includes single overhead camshaft (SOHC) and double overhead camshaft (DOHC) engines.[4] 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; each cam lobe moves 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 RB engines are derived from the six-cylinder L20A engine, which has the same bore and stroke as the RB20. All RB engines were made in Yokohama, Japan where the VR38DETT engine was made. Some RB engines were rebuilt by Nissan's NISMO division at the Omori Factory in Tokyo as well. All Z-Tune Skylines were rebuilt at the Omori Factory.
After a 15-year hiatus, production of the RB series resumed in 2019.[5][6][7]
^Vijayenthiran, Viknesh (March 29, 2019). "Nissan Skyline GT-R's RB26 engine back in production". Motor Authority. Archived from the original on April 21, 2019. Retrieved April 16, 2019.
^Chin, Chris (2019-03-28). "Nissan puts legendary RB26 inline-six engine back into production". Auto Blog. Archived from the original on 2019-03-29.
^Data File 1987, Tokyo, Japan: Nissan Motor Co., Ltd., April 1987, p. 11
^Ishida, Y.; Ito, K.; Kita, Y.; Kadowaki, S. (1986-01-01). "Nissan's new in-line DOHC six cylinder engine and its development". OSTI 5702884.
^Heatley, Tyler (2019-04-02). "Nissan's Iconic RB26 Engine Returns To Production". Yahoo News. Archived from the original on 2019-12-24. Retrieved 2019-12-24.
^Silvestro, Brian (2019-03-29). "The Nissan Skyline GT-R's RB26 Inline-Six Is Going Back Into Production". Road & Track. Archived from the original on 2020-07-08. Retrieved 2020-01-19.
^Weiner, Eric (2019-03-28). "Nissan is restarting production of the Skyline's RB26 straight-six". Hagerty. Archived from the original on 2020-12-14. Retrieved 2020-01-19.
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