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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).
A single overhead camshaft (SOHC) design was introduced by Pontiac in the 1966 model year as the standard engine in the Tempest. Offered also in 1967, the 230 cu in (3.8 L) OHC 6 shared internal dimensions with the overhead valve Chevrolet straight-6 engine it was based on, [citation needed] but had unique cast iron block and head castings ...
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 L engines; 1951–1966 Zephyr 6—(United Kingdom) 1964–2011 Cologne/Taunus V6—1.8–4.0 L pushrod and SOHC V6
The single overhead cam V6 engine introduced in 1993. It was derived from Chrysler's first homegrown front-wheel drive V6, the Chrysler 3.3 engine. The SOHC V6 has been replaced by the Chrysler Pentastar engine. There are three major variants of this basic design: the 3.5 L, 3.2 L, and 4.0 L. Additionally, a 2.7 L DOHC version was developed.
The SOHC EJ Subaru boxer engines were non-interference engines through 1995, run by a single timing belt driving both cams (both sides of the engine) and the water pump. Because they are non-interference engines, if the timing belt fails, the engine of the models up to 1995 will not be damaged.
This engine was designed in 1998 with the related 4-cylinder variant R 420 SOHC. In 1999, VM granted Hyundai the license to manufacture both engines. Under terms of the agreement, Hyundai was able to manufacture the engines only to power its vehicles, while VM was free to grant other license agreements also in Korea, as happened in 2004 with GM ...
Due to the SOHC engine's unique design involving both front and rear timing chains, the repair of the timing guides would often require complete engine removal depending on the severity of the problem. When the engine is run for an extended period of time with this issue the engine can jump timing, damaging the heads and valves.
This DOHC variant had low impedance injectors as well as a higher compression ratio than the SOHC, necessitating the use of a knock sensor. The second generation SOHC 6VD1 made 190 hp from 1996 to 1997. [4] In 1998, the same engine was available in DOHC form with 205 hp until 2002 with the termination of the Isuzu Trooper as the 6VD1-W.