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O’Reilly Automotive, Inc., doing business as O’Reilly Auto Parts, is an American auto parts retailer that provides automotive aftermarket parts, tools, supplies, equipment, and accessories to professional service providers and do-it-yourself customers. Founded in 1957 by the O’Reilly family, O'Reilly auto parts operates more than 6,000 ...
A valve job is the colloquial term for resurfacing the mating surfaces of the poppet valves and their respective valve seats that control the intake and exhaust of the air/fuel mixture in four stroke internal combustion engine, replacing valve oil seals, replacing any deficient valve springs, and otherwise bringing the components of a cylinder head up to manufacturer’s spec. [1] A ...
Swirl flap principle in a four-valve engine. A swirl flap is a small butterfly valve fitted to four-stroke internal combustion engines with at least two intake valves.It is installed inside or just before one of a cylinder's two intake ports, allowing to throttle its intake port's air flow, causing a swirl in the other intake port not fitted with a swirl flap.
Sleeve valve closeup from a Bristol Centaurus Mark 175. Bristol Perseus. The sleeve valve is a type of valve mechanism for piston engines, distinct from the usual poppet valve. Sleeve valve engines saw use in a number of pre–World War II luxury cars and in the United States in the Willys-Knight car and light truck. They subsequently fell from ...
Pep Boys is an American automotive aftermarket service chain. Originally named Pep Auto Supply, the company was founded in Philadelphia, Pennsylvania, in 1921 by Emanuel "Manny" Rosenfeld, Maurice "Moe" Strauss, W. Graham "Jack" Jackson, and Moe Radavitz.
Valve seats are often formed by first press-fitting an approximately cylindrical piece of a hardened metal alloy, such as Stellite, into a cast depression in a cylinder head above each eventual valve stem position, [1] and then machining a conical-section surface into the valve seat that will mate with a corresponding conical section of the ...
A compound engine uses several stages to produce its output. Not all engines that use multiple stages are called compound engines.In particular, if an engine uses a later stage purely to extract energy from the exhaust for some other purpose, and notably for turbo charging, is not called a compound engine.
The first Southern units fitted with EP brake could be considered the Bulleid double deck 4-DDs built 1949 (4001 & 4002). The EP brake fitted to this stock was not of the self lapping type and still required the Westinghouse brake as the 'fail to safe' braking as the EP brake fitted was of the 'energise to apply' type, which meant if there was a loss of brake control voltage the EP brake was ...