Nissan VRH engine


The Nissan VRH engine family consists of several racing engines built by Nissan Motor Company beginning in the late 1980s. All VRH engines are in a V8 configuration, with either Naturally [aspirated engine|natural aspiration] or forced induction. Some VRH engines are loosely based on Nissan's production V8 engine blocks, including the VH and VK engines, while others were designed from the ground up for racing and share no components with production blocks.
The name "VRH" comes from the engines' V configuration, their purpose as racing engines, and the fact that all of them have eight cylinders.

History

In 1987, Nissan began work on an engine exclusively for race use; the result was the VEJ30 engine, developed by Yoshikazu Ishikawa. This engine was based on old technology, and was not a success. For 1988, the VEJ30 was improved by Yoshimasa Hayashi and renamed the VRH30. Changes included increasing the displacement to.
This engine was, however, still based on the obsolete VEJ30, and development of the all-new VRH35 was started in parallel with the VRH30. In 1989, the VRH35 appeared as a new development engine and was used in the Nissan R89C.
A 3.0-litre variant of the VRH35Z was also used in the 1998 Courage-Nissan C51 at the 1998 24 Hours of Le Mans. Both C51s failed to finish.
The design of the engine was later sold to McLaren, where it served as the basis of their M838T and M840T engines.

VRH30T

The VRH30T was used in the R88C.

VRH35Z

The VRH35Z first appeared in 1990 in the R90C.
  • Cylinder Block: Aluminum
  • Aspiration: Twin-Turbo
  • Valvetrain: DOHC, 4 Valves per Cylinder
Displacement:
  • Bore x Stroke:
  • Compression Ratio: 8.5:1
  • Power: at 7600 rpm
  • Torque: at 5600 rpm
  • Engine Management: ECCS-R-NDIS
  • Weight:

VRH35L

In 1997, Nissan, working in partnership with Tom Walkinshaw Racing, fielded a VRH35L in the R390 GT1.
  • Cylinder Block: Aluminum
  • Aspiration: Twin-Turbo
  • Valvetrain: DOHC, 4 Valves per Cylinder
  • Displacement:
  • Bore x Stroke:
  • Compression Ratio: 9.0:1
  • Power: at 6800 rpm
  • Torque: at 4400 rpm
  • Dry weight:

VRH35ADE

The VRH35ADE was used by Infiniti in their Indy race car.
  • Cylinder Block: Aluminum-alloy block and heads; molybdenum-coated pistons
  • Aspiration: Naturally Aspirated
  • Valvetrain: DOHC, 4 Valves per Cylinder
  • Displacement:
  • Bore x Stroke:
  • Compression Ratio: 13.8:1
  • Lubrication System: Multi-stage dry sump
  • Oil Capacity:
  • Power: at 10700 rpm
  • Torque: at 10400 rpm

VRH40ADE

The VRH40ADE was used by Infiniti in their Indy race car.
  • Cylinder Block: Aluminum-alloy block and heads; molybdenum-coated pistons
  • Aspiration: Naturally Aspirated
  • Valvetrain: DOHC, 4 Valves per Cylinder
  • Displacement:
  • Bore x Stroke:
  • Compression Ratio: 14.5:1
  • Lubrication System: Multi-stage dry sump
  • Oil Capacity:
  • Power: at 10700 rpm
  • Torque: at 8500 rpm

VRH34A

The VRH34A is one of two engines used in Nissan's GT500-spec GT-R.
  • Cylinder Block: Aluminum
  • Aspiration: Naturally Aspirated
  • Valvetrain: DOHC, 4 Valves per Cylinder
  • Displacement:
  • Bore x Stroke:
  • Power:
  • Torque: Over
  • Dry weight: ?

VRH50A

Image:Nissan VRH50A engine rear Nissan Engine Museum.jpg|230px|right|thumb|Nissan VRH50A engine at the Nissan Engine MuseumThe VRH50A was used in the Nissan R391.
  • Cylinder Block: Aluminum, Closed Deck
  • Aspiration: Naturally Aspirated
  • Valvetrain: DOHC, 4 Valves per Cylinder
  • Displacement:
  • Bore x Stroke:
  • Compression ratio: 14.0:1
  • Redline: 8000 rpm
  • Power: at 7200 rpm
  • Torque: at 6000 rpm
  • Engine Management: Nissan Electronics/Hitachi HN-1
  • Weight:

Caparo T1

The Caparo T1 engine is a high-performance automobile engine originally developed by Tom Walkinshaw Racing, and later produced by Menard Competition Technologies. It was used in the Caparo T1 sports car from 2006 to 2015. The engine is derived from the Nissan VRH35ADE IndyCar engine. Originally called the Freestream T1, the Caparo T1 roadcar was intended to be powered by a supercharged 2.4-litre V8 that produced.
After the project was taken over by Caparo, that engine was abandoned in favour of a naturally-aspirated, 32-valve, V-8, with cylinder banks at 90°, and a dry-sump oil system. It weighs. The engine's block and cylinder heads are made of aluminium alloy, and its cylinder liners are of Nikasil-coated aluminium. The crankshaft is machined from steel billet, and is a flat-plane design. The injection system is sequential, with two injectors per cylinder. Each cylinder also has its own throttle butterfly. Actuation of the titanium valves is by finger-follower. The MCT V8 is managed by a fully tunable Pectel SQ6 engine control unit, and uses a throttle-by-wire system.
The production engine generates a maximum power of at 10,500 rpm and a maximum torque of at 9,000 rpm, giving the car a power-to-weight ratio of 1,223 horsepower per tonne. An engine converted to methanol fuel is reported to have produced.
In 2009, Caparo announced a high-performance version of the T1 called the Race Extreme, which seemed to retain the 3.5-litre engine base, but which was tuned to produce. An even higher output version of the car announced in 2014 was called the Caparo T1 Evolution, with an engine with a claimed output of. It is unclear what model engine this version is based on.

Other VRH engines

The VRH34A and VRH34B are naturally aspirated engines used by Nissan in their GT-R Super GT race car from 2010.
The VRH34A is and produces and over of torque.
The VRH34B is and produces and over of torque.