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The 22R has a large displacement and a strong block, but its comparatively long stroke and restrictive head limit its use in high revving applications. Thus, the Toyota 18R-G, 2T-G, 4A-GE and 3S-GE 4-cylinder engines are better suited for performance applications. A popular modification to the early 22R is to use a 20R head.
The original design of the cam-in-head engine was done by General Motors in Detroit, Michigan. [1] Although the camshaft is in the cylinder head, the CIH is not a true overhead camshaft design. Rather it can be thought of as a cam-in-block engine with a greatly shortened valve drivetrain. The camshaft is driven by a roller chain.
Consumer Reports (CR), formerly Consumers Union (CU), is an American nonprofit consumer organization dedicated to independent product testing, investigative journalism, consumer-oriented research, public education, and consumer advocacy.
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).
The cylinder head is composed of aluminum alloy and the intake manifold is made from aluminum. [5] 3RZ-FE in a Toyota Tacoma. Applications: [5] 1995–2004 Toyota Tacoma; 1996–2000 Toyota 4Runner; 1994–1998 Toyota T100; 1995–2002 Granvia; 1995–2004 Toyota Hilux; 1990–2004 Toyota HiAce; 2001–2009 Toyota Land Cruiser Prado [citation ...
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).