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A 4-2-1 exhaust system is a type of exhaust manifold for an engine with four cylinders per bank, such as an inline-four engine or a V8 engine. The layout of a 4-2-1 system is as follows: four pipes (primary) come off the cylinder head , and merge into two pipes (secondary), which in turn finally link up to form one collector pipe.
To suppress engine knock with the high compression, residual gas is reduced [dubious – discuss] by using 4-2-1 engine exhaust systems, implementing a piston cavity, and optimizing fuel injection. [citation needed] Combustion duration is shortened by intensifying air flow, increasing injection pressure, and using multi-hole injectors ...
I believe it would be helpful to present the information on 4-2-1 exhausts alongside other information about exhaust tuning. Therefore I propose that 4-2-1 engine exhaust systems is merged into Tuned exhaust. Cheers, 1292simon 01:58, 29 September 2019 (UTC)
Exhaust system of the Opel Corsa B 1.2 petrol Exhaust manifold (chrome plated) on a car engine. An exhaust system is used to guide reaction exhaust gases away from a controlled combustion inside an engine or stove. The entire system conveys burnt gases from the engine and includes one or more exhaust pipes. Depending on the overall system ...
Four-stroke cycle used in gasoline/petrol engines: intake (1), compression (2), power (3), and exhaust (4). The right blue side is the intake port and the left brown side is the exhaust port. The cylinder wall is a thin sleeve surrounding the piston head which creates a space for the combustion of fuel and the genesis of mechanical energy.
The exhaust manifold has a rear location on the transverse engine, compared to the front location for the previous engine, yielding important benefits such as better emissions performance. To lower vibration, Mitsubishi used a 4-point inertial axis system with cylindrical hydraulic engine mounts on the left and right sides. A lightweight, high ...