Holden motor

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The Holden motor is straight-six engine produced by General Motors–Holden's in Australia between 1948 and 1986. Initially dubbed the Grey motor alluding to the colour of the cylinder block, later iterations came in the form of a Red, Blue, Black and the four-cylinder Startfire engine.

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[edit] Grey

The Grey motor built between 1948 and 1962, earned its name as the engine block was painted grey. This overhead valve engine was first fitted to the Holden 48-215 and mated to a three-speed manual transmission. A three-speed GM Roto-Hydramatic 240 automatic transmission was optionally fitted in the latter EK and EJ series. The engine was based on a Buick pre-World War II engine design, and saw only minor changes throughout its 15-year life.

It displaced 132.5 cubic inches (2.2 L) in its original form, and was bored out to 138 cubic inches (2.3 L) when the FB series was introduced in 1960. It made only 60 brake horsepower (45 kW) at 5000 rpm, providing superior performance than competing four-cylinder Austin, Morris, Vauxhall and Ford of Britain vehicles. Due to the low compression ratio (7.5:1) they were able to revolve quite fast and effortlessly. Due to their sheer ubiquity, they were popular for racing, and were fitted to many open-wheelers, as well as racing Holdens. With the motors low-end torque, they also found their way into boats and machinery such as forklift trucks.

This engine ran a nine-port non-crossflow cast iron cylinder head (three port inlet, four ports exhaust in a siamese layout), and was fed by a single barrel Stromberg carburettor and fitted with a traditional points distributor and ignition coil. The ignition system was six volts to match the 48-215 and FJ's six volt negative ground system, as was the starter engine. The earliest grey motors (approximately 100,000) were fitted with Delco-Remy accessories, although Lucas and Bosch equivalents throughout the motor’s lifetime replaced these.

The very first production grey motor (1948) was number 1001, and they continued in a single sequence until July 1956, when the prefix "L" was introduced at engine number L283373 for 12 volt negative ground engines as fitted to the all new FE model. The prefix "U" was introduced from engine U283384 for motors with the original electricals as fitted to the run-on FJ utility and panel van models, which ended in February and May of 1957 respectively. The prefix "B" was introduced and the number sequence reset with the introduction of the 138 cubic inches (2.3 L) displacement engine, and ultimately this was replaced by a "J" prefix for motors fitted to EJ vehicles in 1962.

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[edit] Red

Holden Red motor (1971–1974 HQ series)
Engine Displacement Compression Power Torque
bhp kW ft·lb N·m
2.84 L Red I6 173 cu in Low 112 84 160 220
High 118 88 168 228
3.3 L Red I6 202 cu in Low 129 96 190 260
High 135 101 194 263

Superseding the Grey motor, the Red motor was manufactured between 1963 and 1980. Denoted by the cylinder block painted red, the engine debuted in the Holden EH in capacities of 149 cubic inches (2.44 L) and 179 cubic inches (2.93 L) producing 100 brake horsepower (75 kW) and 115 brake horsepower (86 kW) respectively. This was a power increase of 33 per cent and 53 per cent over the previous motor.[1]

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[edit] Blue

3.3 litre Blue motor in a 1981–1984 Holden VH Commodore SL/X.
3.3 litre Blue motor in a 1981–1984 Holden VH Commodore SL/X.

The Blue specification debuted in the 1980 VC Commodore.[2]

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[edit] Black

The Black specification was introduced in the 1984 VK Commodore.[citation needed] In the VL series of 1986, Holden ceased the tradition of employing Australian-made and designed six-cylinder engines, instead opting for the Nissan RB30 engine. This came because pending emission standards and the requirement for unleaded fuel made it difficult to re-engineer the engine.[3]

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[edit] Starfire

This 1.9 litre powerplant, known as the Starfire engine, was effectively Holden's existing straight-six with two cylinders removed.[2] Peak power output is 58 kilowatts (78 hp), with a 17.5 second acceleration time from 0-100 kilometres (0–62 mi).[4] This variant was a compromise due to poor performance and the need to push the engine hard led to fuel consumption similar to the straight-sixes.[2]

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[edit] Notes

  1. ^ Holden 6 Cylinder Red Motor. Unique Cars and Parts. Retrieved on 2008-03-16.
  2. ^ a b c Holden Commodore VC. Unique Cars and Parts. Retrieved on 2007-06-15.
  3. ^ Robinson (2006), p. 25
  4. ^ Holden Commodore VC Technical Specifications. Unique Cars and Parts. Retrieved on 2008-02-07.

[edit] References