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SOHC design (for a 1973 Triumph Dolomite Sprint) . The oldest configuration of overhead camshaft engine is the single overhead camshaft (SOHC) design. [1] A SOHC engine has one camshaft per bank of cylinders, therefore a straight engine has a total of one camshaft and a V engine or flat engine has a total of two camshafts (one for each cylinder bank).
An overhead valve engine, abbreviated (OHV) and sometimes called a pushrod engine, is a piston engine whose valves are located in the cylinder head above the combustion chamber. This contrasts with flathead (or "sidevalve") engines , where the valves were located below the combustion chamber in the engine block .
They feature an SOHC head with 2-valves per cylinder, and is fed by a multi-point fuel injection system, which allows it to run on either E100 (pure ethanol) or E25 gasoline (standard in Brazil). Major differences between previous engines include reduced friction, lowered weight, individual coil-near-plug ignition, and a new cylinder head design.
1960–1993 (Longer in Australia) 'Falcon Six' OHV (144, 170, 200, 250) car usage. 1964–1996 OHV (240, 300, 4.9 L) truck 6 built in Cleveland, Ohio; 1988–2002 Ford Australia SOHC I6 Falcon engines 1988–1989 3.2 L SOHC; 1988–1992 3.9 L SOHC; 1992–2002 4.0 L SOHC; 1998–2002 4.0 L SOHC VCT; 2002–2016 Ford Australia Barra DOHC I6 4.0 ...
The 3.5L version has an intake arrangement with two separate manifolds and throttle bodies connected with a crossover valve. This provides better low and midrange torque. Another difference with the 3.5 as opposed to the 3.3 is that it has a timing belt, not a timing chain. The water pump is driven by the timing belt on the 3.5, whereas on the ...
Timing chain rattle was mitigated in later years of the SOHC (in most vehicles, after 2002) with updated cassettes and tensioners. This problem occurs with varying frequency among some Ford vehicles equipped with the SOHC engine including the Ford Mustang, Ford Explorer, and Ford Ranger. The 4.0 OHV was not affected by this issue. [6]
The Vortec 2200 (RPO code L43) is an OHV straight-4 truck engine. This engine is equipped with secondary air injection, and is flex-fuel capable. It is entirely different from the Iron Duke, and was the last North American iteration of the GM 122 engine. The 2200 uses an iron block and aluminum two-valve cylinder head.
The Vulcan's block and cylinder heads are of cast iron, with a 60° angle between cylinder banks. It has a single cam-in-block and two overhead valves per cylinder operated by pushrods and rocker arms. Bore and stroke measurements are 89 mm × 80 mm (3.504 in × 3.150 in), for a total displacement of 2,986.14 cc (182.23 cu in).