Mitsubishi 4B1-Series Engines
The Mitsubishi 4B1 engine family is the first product of Global Engine Manufacturing Alliance (GEMA), a joint venture of Chrysler, Hyundai Motors and Mistubishi. The engine is produced in five different locations around the globe, one of them is the Shiga plant, where Mitsubishi produces its engines. The basic design for all engines produced under GEMA is the same, however each manufacturer tailors the engines according to their needs. Mitsubishi have tailored the 4B1 family so that this new engine family can replace the existing inline-4 engines of Mitsubishi.
All the 4B1 engines produced by Mitsubishi have cast aluminum blocks and heads with dual over head cams, 4 valves per cylinder. 4B1 is known to be the first engine that features MIVEC on both exhaust and intake cams. The new engine is lighter and more efficient compared to the older engines that Mitsubishi produced. The production of 4B1 series started in 2005 and first version version, 4B12 was used in Mitsubishi Outlander. Currently there are 3 different versions of 4B1 Engine that are used in Lancer, Outlander and Delica models.
- 4B10 - 1.8L
- 4B11 - 2.0L
- 4B12 - 2.4L
These engines share the same short block. The difference in displacement is achieved by variance in bore and stroke.
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