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The 2.5 L I4 head lost two cylinders in its center compared to the original 258 cu in (4.2 L) I6 design. A new cylinder head for the 2.5 L I4 engine featured a double-quench combustion chamber. Its shape provides little space at the front and rear when the piston rises to the top of its compression stroke. [2]
1919 Napier Lion II aircraft engine with three cylinder banks. Any design of motor/engine,be it a V or a boxer can be called an "in-line" if it's mounted in-line with the frame/chassis and in-line with the direction of travel of the vehicle.When the motor/engine is across the frame/chassis this is called a TRANSVERSE motor.Cylinder arrangement is not in the description of how the motor/engine ...
Introduced in non-North American markets for the MY2008 and North American markets for MY2009, the 2.5 L L5-VE is an updated, bored and stroked version of the L3-VE 2.3 L. The 2.5 L; 151.8 cu in (2,488 cc) L5 4-cylinder engine has an 89 mm (3.50 in) bore and a 100 mm (3.94 in) stroke, with a compression ratio of 9.7:1.
The Iron Duke engine (also called 151, 2500, Pontiac 2.5, and Tech IV) is a 151 cu in (2.5 L) straight-4 piston engine built by the Pontiac Motor Division of General Motors from 1977 until 1993. Originally developed as Pontiac's new economy car engine, it was used in a wide variety of vehicles across GM's lineup in the 1980s as well as supplied ...
The majority of automotive four-cylinder engines use a straight-four layout [1]: pp. 13–16 (with the exceptions of the flat-four engines produced by Subaru and Porsche) [2] and the layout is also very common in motorcycles and other machinery. Therefore the term "four-cylinder engine" is usually synonymous with straight-four engines.
The first version of this engine family was a normally aspirated 2.2 L (134 cu in) unit. Developed under the leadership of Chief Engineer – Engine Design and Development Willem Weertman and head of performance tuning Charles "Pete" Hagenbuch, who had worked on most of Chrysler's V-8 engines and the Chrysler Slant-6 engine, [1] it was introduced in the 1981 Dodge Aries, Dodge Omni, Plymouth ...
The 2.5 L (2488 cc) PR25DD has a bore and stroke of 89 mm × 100 mm (3.5 in × 3.9 in) with a compression ratio of 12.0:1. [3] Compared with its predecessor, the QR25DE, it has an increased compression ratio, iron mirror-finish bore coatings instead of cast-iron cylinder liners, and a resin intake port insert to insulate charge air from heat from the cylinder head.