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In the 1980s, many U.S. production engine remanufacturers began reaming valve guides, rather than replacing them, as part of their remanufacturing process. They found that by reaming all the valve guides in a head to one standard size (typically 0.008 in. diametrically oversized), and installing remanufactured engine valves having stems that are also oversized, a typical engine head can be ...
The GA engine is a 1.3 to 1.6 L inline-four piston engine from Nissan. It has a cast-iron block and an aluminum head. It has a cast-iron block and an aluminum head. There are SOHC and DOHC versions, 8, 12, and 16 valve versions, carbureted, single-point, and multi-point injected versions, and versions with variable valve timing (GA16DE).
Doubling the number of the same size cylinders will double the torque and power. The downside to having more pistons is that the engine will tend to weigh more and generate more internal friction as the greater number of pistons rub against the inside of their cylinders. This tends to decrease fuel efficiency and robs the engine of some of its ...
The engine's origins lay in the wartime production of Bristol aero engines at the new Banner Lane shadow factory, operated by Standard in Coventry. [1] From 1939 this factory produced Bristol Hercules engines, an air-cooled radial engine, with Bristol's typical sleeve valves. With peace in 1945, this huge factory then stood empty.
Most engines with four or less cylinders use a straight engine layout, and most engines with eight cylinders or more use a V engine layout. However, there are various exceptions to this, such as the straight-eight engines used by various luxury cars from 1919-1954, [ 1 ] [ 2 ] [ 3 ] V4 engines used by some marine outboard motors, V-twin and ...
The LE2 is the direct-injection 1.4 L turbocharged variant of the SGE, with a 74 mm × 81.3 mm (2.91 in × 3.20 in) bore and stroke for a total capacity of 1,399 cc (1.4 L). Compression ratio is 10.0:1 and the engine can run on regular grade gasoline. The LE2 is also paired with a start-stop system in some vehicles.
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Diagram of a DOHC straight-four engine 1989-2006 Ford I4 DOHC engine with the cylinder head removed 2006-2009 Nissan M9R diesel engine. A straight-four engine (also referred to as an inline-four engine) is a four-cylinder piston engine where cylinders are arranged in a line along a common crankshaft.