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The Lycoming IO-720 engine is a large displacement, horizontally opposed, eight-cylinder aircraft engine featuring four cylinders per side, manufactured by Lycoming Engines. [ 1 ] There is no carbureted version of the engine, which would have been designated O-720 and therefore the base model is the IO-720.
The cylinder head cover is made from a light weight plastic-resin material. The exhaust manifold is integrated to the cylinder head together with the catalytic converter and oxygen sensor to save even more weight as well as helping the engine to warm up quicker, reducing total exhaust emissions. There was an overall saving of 10 kg (22 lb).
The Shimoyama Plant 1ZZ-FE is similar to the US built 1ZZ-FE with it having the same bore, stroke and displacement, but has larger (32 mm) intake valves and (27.5 mm) exhaust valves with corresponding revisions to the ports, resulting in higher power output compared to the 2002-2008 US Plant 1ZZ-FE. Toyota's advertised power output for this ...
Engine changes consisted of an increase in stroke by 2 mm, enlarging displacement to 1,340 cc (82 cu in). The compression ratio was boosted from 11:1 to 12.5:1 and the cylinder head was made more compact and was given lighter titanium valves, saving 14.1 g (0.50 oz) and 11.7 g (0.41 oz) on each intake and exhaust valve, respectively.
CHT engine in a Fiat Croma. One version was the CHT (for "Controlled High Turbulence"). This version was mainly used in the first generation Fiat Croma and used a special head and intake with auxiliary intake ducts to provide a better fuel and gas mixture under low or partial acceleration. [1]
G4JP 2.0 (Sirius II) is the 2.0 L (1,997 cc) Korean version. Bore x stroke is 85 mm × 88 mm (3.35 in × 3.46 in). It has a cast iron engine block and aluminum DOHC cylinder heads. It uses MFI fuel injection, has 4 valves per cylinder and features forged steel connecting rods.
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The LD9 Twin Cam was a 2.4-liter Quad 4 variant which debuted in 1996 with balance shafts and a redesigned cylinder head. In the mid-1990s, these engines, like their earlier 2.3-liter counterparts, were known for timing chain failures, as well as water pump failures, in which the water pumps were often difficult and costly to access and replace.