The intake manifold is just a hollow chamber that holds a cloud of gas and air. The pistons then draw the gas fumes into the cylinder as they go down and closes the intake valve. Then the piston comes back up where the gas fumes are compressed and the spark plug fires driving the piston down. Then on the next stroke the piston comes up where the exhaust valve opens and the burnt gas is let out through the exhaust manifold and then through the exhaust pipe. Because of the heat they couldn't just hook the exhaust pipes to the engine. The cast iron exhaust manifold dissipates enough of the heat the exhaust pipe can handle it.
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Today's Featured Article - Restoration Story: 1941 John Deere B Row Crop - by Anthony West (UK). The 1960's promise of white hot technology, to relieve us of the drudgery of everyday work and to replace it with increased leisure time has not materialised just yet....if anything most people are caught up in an ever increasing rat race, wishing that there was at least 36hours in a day!!!. The need for people to escape for periods of relaxation in an increasingly complex and pressured environment takes us into the realm of hobbies. For some it's scaling high mountains for others it's putting p
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