Difference between revisions of "Astron"
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| − | + | {{Infobox engine | |
| − | + | | name = Astron (4G5x) | |
| − | + | | image = | |
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| − | + | | manufacturer = Mitsubishi Motors | |
| − | + | | aka = | |
| + | | production = | ||
| + | | predecessor = | ||
| + | | successor = | ||
| + | | configuration = Inline 4 | ||
| + | | displacement = | ||
| + | | bore = | ||
| + | | stroke = | ||
| + | | block = Cast Iron | ||
| + | | head = Aluminum alloy | ||
| + | | valvetrain = SOHC (except for a DOHC race version) | ||
| + | | compression = | ||
| + | | supercharger = | ||
| + | | turbocharger = | ||
| + | | fuelsystem = | ||
| + | | management = | ||
| + | | fueltype = | ||
| + | | oilsystem = | ||
| + | | coolingsystem = | ||
| + | | idle = | ||
| + | | redline = | ||
| + | | power = | ||
| + | | specpower = | ||
| + | | torque = | ||
| + | | length = | ||
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| + | | emissions level = | ||
| + | | emissions control = | ||
| + | }} | ||
| + | Mitsubishi debuted the '''Astron''' engine in 1972 and over its lifetime ranged in capacity from 1.85 to 2.6 litres. It was the first mass produced engine to feature twin counter-rotating [[balance shaft|balance shafts]] (dubbed Silent Shaft by Mitsubishi), which were used to dampen rocking and vertical forces in the interest of smoothness. | ||
| + | The engine featured "hemispherical" combustion chambers and 8 valves per cylinder in overhead cam configuration. It was designed for use in rear-wheel and four-wheel drive vehicles. The Astron has been used in passenger and commercial vehicles, forklifts and even marine applications. It has also been built in both petrol and [[Astron Diesel|diesel]] forms. | ||
| + | __TOC__ | ||
==4G51== | ==4G51== | ||
A 1.85 Litre Petrol engine with a displacement of 1855cc. It used a 81.0x90.0mm bore and stroke and was used in early [[Galant|Galants]] and [[Sigma|Sigmas]]. | A 1.85 Litre Petrol engine with a displacement of 1855cc. It used a 81.0x90.0mm bore and stroke and was used in early [[Galant|Galants]] and [[Sigma|Sigmas]]. | ||
==4G52== | ==4G52== | ||
| − | A 2.0 Litre petrol engine with a displacement of 1995cc. It used a 84.0x90.0mm bore and stroke. In Australia this engine was used in the Sigma, Scorpion, L200 and L300. | + | A 2.0 Litre petrol engine with a displacement of 1995cc. It used a 84.0x90.0mm bore and stroke. |
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| + | In Australia this engine was used in the Sigma, Scorpion, L200 and L300. | ||
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| + | ==4G52 Turbo== | ||
| + | In 1981, Mitsubishi produced a limited edition [[First_Generation_Sigma|GH Sigma Turbo]]. The turbocharged Sigma was powered by a 4G52 with Garrett T3 turbocharger producing 8psi boost, Zenith CD175 carburetor and a lower compression ratio of 7.3:1. The engine produced 116 kW and 235Nm of torque. It has the distinction of being the first Australian produced turbocharged engine. | ||
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==4G53== | ==4G53== | ||
A petrol 2.4 Litre engine with a displacement of 2384cc. Using a 88.0x98.0mm bore and stroke it was used in the Challenger and Canter. | A petrol 2.4 Litre engine with a displacement of 2384cc. Using a 88.0x98.0mm bore and stroke it was used in the Challenger and Canter. | ||
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==4G54== | ==4G54== | ||
| − | + | A 2.6 Litre (2555cc) petrol engine which came in two variants. A standard compression (8.2:1) version and a high compression (9.5:1) version. It uses a 91.1x98.0mm bore and stroke. | |
In Australia, the standard compression version was used in GH-GK Sigma, Scorpion, Canter, Express, Pajero, Triton and Mazda B2600 (Ford Courier). The high compression version was used in some GK and GN Sigmas. | In Australia, the standard compression version was used in GH-GK Sigma, Scorpion, Canter, Express, Pajero, Triton and Mazda B2600 (Ford Courier). The high compression version was used in some GK and GN Sigmas. | ||
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| + | This engine became the basis for the [[1g_Astron_II|Astron II]] used in the Magna. | ||
{{Mitsubishi Engines}} | {{Mitsubishi Engines}} | ||
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[[Category: Other Mitsubishi Technical]] | [[Category: Other Mitsubishi Technical]] | ||
