#c30a

Article from a 1993 Holiday Auto magazine on what they thoughtvwere the best JDM engines from the previous 12 months.

TRANSLATION

Holiday Auto No.1 Selection '92~'93

engine department

Japanese power unit is the best in the world

The reaction to the “Twin Cam” feature in the opening feature of the 9/10 issue was tremendous. We have a wide range of products from current powerful engines to past famous machines and future models, but the one with a supercharger won the number one spot.

Boosted No 1 Nissan's RB26DETT,

Natural intake was Honda's C30A.

RB26DETT (equipped with Skyline GT-R)

King with supercharger

I'm really conscious of the race

Literally the famous machine that became the driving force behind the "R" myth.

Since its debut in 1988, the Skyline GT-R has shown overwhelming performance. The heart of this is the RB26DETT model. As the slogan of the BNR32 GT-R says, “In the beginning, the engine was there. The mechanics are transcendent."

The 6-throttle chamber has a butterfly type throttle valve for each cylinder to enhance throttle response. The turbo is a hybrid of the T3 type on the compressor side and the T25 type that uses a ceramic rotor on the turbine side. The intercooler has a large capacity. The main body is also fully armed with a cooling channel piston and an EX valve during sodium filling. All of Nissan's technology has been incorporated.

▲Metal sodium is added to the stem of the exhaust valve, enclosed. Solid at room temperature and liquefied at high temperature

Suppresses the temperature rise of the exhaust valve by using the properties of sodium

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C30A

(Equipped with NSX)

King of naturally aspirated

I also want to focus on weight reduction

A V-shaped unit created with the ultimate in luxury

The domestic high-power engine has become a 280ps battle. However, the C30A is the only naturally aspirated engine that achieves this figure.

The C30A is the second VTEC engine. In addition to the technology of the B16A type, it also adopts a variable capacity device for the intake manifold. This is to close the valve provided in the manifold chamber up to about 4800 rpm, and to increase the torque by inertial intake due to pulsation change.

The V type with a 90-degree angle is lightweight, and the tuning of the rotation system is also carefully considered. These include molybdenum-coated pistons, titanium connecting rods, ultra-precision mirror-finished crankshafts, and a deep-skirt-type cylinder block made of aluminum light alloy.

▲Big Bore, Short Stroke and Honda Racing

Following the theory of Guengin. In addition to VTEC, intake

A manifold variable capacity device is adopted to aim for the top

2JZGTE

It's Aristo's heart

2nd place

2JZ-GTE (with Aristo)

It may have been upgraded, but it will be installed, but at that time it will be even more powerful. The torque value of 44.0-kgm is in the class for the Supra scheduled to debut this year

Maximum output:280 hp / 5600 rpm Maximum torque:44.0 kgm/3600 rpm

As mentioned in the top speed section, Toyota's strongest engine that supports Aristo is the 2JZ-GTE type. The base is the 1JZ-GTE type that debuted one step ahead, but the 86.0 x 71.5mm bore x stroke has been souped up and changed to the 86.0 x 86.0mm square type. Toyota's first two-way twin turbo system (sequential turbo) is adopted for this, and it demonstrates the maximum output / maximum torque of 280ps / 44.0kgm. The torque value of 44.0kg m is the strongest in its class. It will also be installed in the next Supra.

6G72

Big torque in low speed range

6G72

(with Mitsubishi GTO)

You can run the GTO fast without doing it. ▼ As you can see from the maximum torque at only 2500 rpm, it is a torque-oriented type. That's why it's a regular shift work

MITSUBISHI

V6 DOHC

Maximum output 280 horsepower / 6000 rpm Maximum torque: 42.5 kgm / 2500 rpm

Mitsubishi's heavy fighter, the power unit that pulls the GTO is the 6G72 type. Mitsubishi engines are originally characterized by their focus on torque, and the 6G72 is no exception. Rather, the turbo tune makes its character even clearer. The maximum torque value of 42.5kgm is proof of that. Mechanically, it will be a twin turbo & twin intercooler V6 DOHC that adopts an electronically controlled variable intake system, a new intake port, an active exhaust system, and a high-precision electronically controlled fuel injection system.

B16A

You should enjoy the taste of this once B16A (equipped with Civic etc.)

2nd place

HONDA

continue to reign in The B16A model is the one that made Honda VTEC known to the world. high speed saga

Maximum output: 170 horsepower / 7800 rpm Maximum torque: 16.0 kgm / 7300 rpm

The B16A was the first model to adopt VTEC (Variable Valve Timing Wrist Mechanism). VTEC is a mechanism that uses cams with different profiles in the low speed range and high speed range, aiming to increase peak output in the high rpm range and practical mid- to low-speed torque. In the new model, the compression ratio was increased to 10.4, the valve timing and valve lift were changed, and intake and exhaust efficiency was improved by reducing intake and exhaust resistance. As a result, we achieved 170ps, which is 10ps higher than the conventional model.

4G92

4G92 (equipped with MIVEC, Mirage, etc.)

The cam profile switching mechanism is similar to VTEC, but in the case of MIVEC,

two of the four cylinders are cam-coupled

is rigidly connected to either rocker arm.

The valve will not open unless

the hydraulic piston is not moving

MIVEC

Mitsubishi's next-generation mecha

DOHC 16 VALVE

Maximum output: 175 horsepower / 7800 rpm Maximum torque: 16.0 kgm / 7300 rpm

20V 4A-GE

Behold the brilliance of 5 valves

4A-GE (with Levin/Trueno)

Maximum output: 160 horsepower / 7400 rpm Maximum torque: 18.2 kgm / 4800 rpm

Esprit NSX

Autobacs GT500 NSX

Top End NSX team.