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GTR-Registry.com » Nismo Portal » Nismo R4 RB26DETT Engine

Nismo R4 RB26DETT Engine

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Fitted to: Clubman Race Spec (CRS), Customer Cars



RB2.8L specification is introduced for the first time as an engine menu.

Based on the know-how cultivated in the NISMO complete cars "R33 400R" and "R34 Z-tune", the R4 is a tuning engine that allows you to enjoy torqueful performance in the entire area.

Based on the R3 engine, the displacement was increased to 2.8L by boring the block and replacing the piston, crank and connecting rod.

The overwhelming torque in the middle and low rev range brought about by 2.8L realizes a comfortable run in every scene.

* R4 specifications are different from 400R / Z-tune specifications

(R1 parts shown)
Engine Model RB26DETT
"R4 (R-tune concept ENGINE Spec 4)" Specification
Total Displacement 2,771 cc
Maximum Output 500 ps (estimate)
Maximum Torque 55 kg · m (estimate)
R4 New Parts:  

GT crankshaft

The crankshaft used in GT500 and Z-tune.
Strength is increased by adopting mold forging + fillet roll processing.


GT connecting rod Spec1

The connecting rod used in GT500 and Z-tune.
High-strength nickel molybdenum steel (SNCM439 material) is used, and the I cross-sectional shape realizes light weight and high strength.

  Nissan genuine N1 oversized piston (Φ87) and piston ring

R3 turbo kit

Compared to the conventional R1 turbo kit, the A / R of the compressor has been changed with the aim of improving torque in the mid-low speed range to improve the rise of boost pressure. As a result, the torque in the middle and low rpm range has improved to the same level as the genuine turbo, achieving both ease of handling on the street and performance and durability on the circuit.

Dedicated camshaft

By changing the cam profile to characteristics close to the Z-tune specifications and optimizing the working angle and valve timing, the torque in the medium speed range is greatly improved.

Genuine injector and dedicated delivery pipe for NISSAN GT-R (R35)

Uses genuine injector for NISSAN GT-R (R35) with excellent fuel atomization performance. The engine revs up lighter and the response improves. In addition, gasoline dilution is low, and it is effective in improving fuel efficiency when used in combination with low-viscosity oil.
R4 dedicated ECM
  R4 ornament
Designated oil

COMPETITION OIL type 2212E (15W50) is the designated oil.
Existing Parts from R3 Engine:  
Engine Block N1 Specification

Emphasis is placed on durability in circuit use, and an N1 engine block is used. Provides safety and reliability even under severe use conditions.
  Main bearing (F112 material + new overlay plating NISMO)
  Connecting rod bearing (F112 material + new overlay plating NISMO)
  Reinforced oil pump (NISMO)
  Head gasket (0.9mm metal NISMO)
  Spark plug #8 (NISMO)
  Turbo outlet (large capacity type NISMO)
  Exhaust manifold (BNR34 N1 specification)
  Heat shield tape (50mm NISMO)
  Air flow meter (Large capacity type NISMO)
  Reinforced timing belt (Material reinforced product NISMO)
  Oil pan baffle plate (NISMO)
  Sports air filter (NISMO)
  Throttle chamber color (NISMO)
  Exhaust manifold spacer (Anti-distortion product NISMO)
  Rubber plug, hose drain, head cover washer, ring rubber (genuine product)
  Port Alignment & Manifold Stepped Correction Processing (IN & EXH;)
  Piston & connecting rod weight adjustment, crank & pulley integrated balance
  Engine bench check
  O2 sensor (BNR32 only)
Other parts check: Motion system - Crank pulley, etc
  Lubrication / cooling system - COMPETITION OIL type 2212E (15W50) (for one vehicle), radiator cap, reservoir tank, etc.
  Intake system / idle system - AAC valve, air regulator, etc.
  Fuel system - Fuel pressure regulator, fuel strainer, etc.
  Ignition system and electrical system - EGI sub-harness, coil sub-harness, oil pressure sensor, etc.
  Hose - Heater return pipe, water hose (one set), air hose (one set), oil return hose (one set), heater hose (one set), boost hose (one set), fuel hose (one set), radiator hose (one set), etc.
  Belts - Belt tensioner, idler pulley, reinforced timing belt, compressor belt, power steering belt, fan & alternator belt, etc.
  Mount related parts, etc. - Engine mount, mission mount, T / M member bush, oil seal, other short parts
Electrical system optional parts Crank angle sensor, power transistor, ignition coil, throttle sensor, O2 sensor, knock sensor
Optional Parts:  
Exhaust system NE-1 (titanium)
Price (BNR34): From 6,160,840 yen (2021)




Nismo R4