Nismo S1 RB26DETT Engine

September 30, 2023

Engine

S1 parts conversion that enhances the potential of the engine by replacing the camshaft and turbo. As a tuned engine, we aim at improving the torque and output of the whole engine, making it possible to run without stress even in the city. The S1 is a menu that aims to further increase the potential by introducing parts such as the N1 specification, while checking parts and managing clearance by reaching down to the lower part of the engine. By fully disassembling the engine, checking and cleaning each part, correcting the step, adjusting the weight, and balancing, etc., the S1 tuning will be fully utilized. It is also suitable for performing S1 tuning on vehicles that travel a long distance.

Engine Model	RB26DETT "S1 (S-tune concept ENGINE Spec 1)" Specification
Total Displacement	2,568 cc
Maximum Output	400 ps / 6,800 rpm
Maximum Torque	45 kg · m / 5, 600 rpm
	S1 dedicated camshaft By optimizing the cam profile, it eliminates the dullness in the low rotation range peculiar to turbocharged vehicles, and realizes a characteristic that can comfortably increase to the high rotation range.
	Large diameter turbo outlet Larger inner diameter and less change in cross-sectional area, and at the same time, the provision of a bulkhead reduces exhaust pressure and improves turbine efficiency. The exhaust pressure from the turbo and the exhaust from the swing valve merge smoothly, reducing mutual interference of exhaust and improving boost controllability.
	BNR34 Genuine turbocharger BNR32 and BCNR33 are changed to BNR34 genuine ball bearing type turbo. The adoption of a ceramic turbine wheel improves the rise of the boost pressure from the low rotation speed range, and improves the torque and response from the low and middle speed ranges.
	S1 dedicated ECM
	Metal head gasket
	Racing plug
	Sports air filter
	Designated oil COMPETITION OIL type 2212E (15W50) is the designated oil.
	Engine Cover S1 exclusive
Other parts changed:	Piston & ring (N1 specification)
	Main bearing (genuine product)
	Connecting rod bearing (N1 specification)
	Oil pump (N1 specification)
	Water pump (genuine product)
	Crank pulley & bolt (genuine product)
	Reinforced timing belt (Material reinforced product NISMO)
	Oil pan baffle plate
	Heat shield tape (50mm NISMO)
	Engine gasket kit (complete set overhaul genuine product)
	Turbo inlet water hose, rubber plug, head cover washer (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:	Lubrication / cooling system - COMPETITION OIL type 2193E (5W40) (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
Warranty period: The engine and peripheral parts are guaranteed for one year or 20,000 km after S1.
Price (BNR34):	1,417,500 yen (2011).

Photos

High-dimensional control performance enables sporty driving on any stage S-tune, S1 Package

Targeting street users, this is a light tune package that has evolved the Skyline GT-R into something that is easier to handle and more comfortable to ride. It brings out the potential of the car in a well-balanced manner in a variety of situations, from ordinary roads to winding roads, and gives drivers the joy of driving. It is a package that combines sporty driving with comfortable performance, including an engine that responds quickly to accelerator work, a suspension that exhibits excellent movement both at high speeds and on mountain roads, and brake pads that suppress unpleasant squeal.

ENGINE｜POWER TRAIN ｜CHASSIS｜EXTERIOR ｜INTERIOR｜OTHERS

ENGINE

S1 parts conversion increases the potential of the engine by replacing the camshaft and turbo. Although it is a simple configuration for engine tuning, it compensates for the lack of output in the low rotation range peculiar to turbo cars, and increases torque and output across the entire range, making it possible to drive stress-free around town.

	・Large diameter turbo outlet ・S1 specific camshaft ・Metal head gasket ・Sports air filter ・Racing plug ・Engine oil cooler
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POWER TRAIN

The "Sports Clutch Kit" uses copper mix, an amazing new material that surpasses metal, and achieves stable torque transmission and ease of handling that are unaffected by thermal changes. This is a clutch system that anyone can use, boasting the same operational feel as a genuine clutch.


Sports clutch kit (copper mix)			Back to top

CHASSIS

Chassis tuning that pursues controllability in order to embody the concept of "easy handling." The "S-tune suspension system" boasts steering stability that follows the ground even when driving at high speeds or on rough roads. In addition, the "S-tune brake pads" and "brake hose set" not only improve braking power, but also suppress squeal and dust, and improve pedal touch and response. The wheels are one-piece forged "LM GT4" gold models exclusive to NISMO package cars. Achieves reduced unsprung load, high rigidity, and high strength.


S-tune suspension system	S-tune brake pads	brake hose set	Aluminum road wheel LM GT4 (18×9.5J) Gold for package car
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EXTERIOR

The exterior is the result of Nismo's wealth of know-how gained from race car development. We aimed to increase downforce using aerodynamics derived from wind tunnel experiments. In addition, in order to efficiently obtain running air, we pay close attention to the shape of the ducts and guides, increasing the cooling effect of the engine compartment and brakes. In addition, a three-dimensional metal emblem exclusively for NISMO package cars is attached to the rear.


front aero bumper	side skirt set	rear under spoiler set	Rear spoiler (flap)

carbon pillar garnish	Dedicated emblem [NISMO/S-tune]	Front blinker (smoke type)	Side blinker (smoke type)
carbon pillar garnish	Dedicated emblem [NISMO/S-tune]	Front blinker (smoke type)	Back to top

INTERIOR

It features functional interior parts that stimulate the driver's driving, including a full-scale 320km/h "combination meter" and a "floor mat" that provides heel support and grip for quick pedal work.


Combination meter (white or black)	GT shift knob (made of special soft urethane)	floor mat	Back to top

OTHERS

The material is Ecsaine with the "NISMO" logo, and an original vehicle inspection certificate holder is included.

Remember that all ornamentation items are available on our website. Chassis plate, Engine plate, Nismo emblem, and Door inlets

info By GT-R Registry

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