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Manifold vacuum, or engine vacuum in a petrol engine is the difference in air pressure between the engine's intake manifold and Earth's atmosphere. Manifold vacuum is an effect of a piston's movement on the induction stroke and the airflow through a throttle in the intervening carburetor or throttle body leading to the intake manifold. It is a ...
Gaskets and shaft seals were intended to limit the leakage of oil, but they were usually not expected to entirely prevent it. The blow-by gases would diffuse through the oil and then leak through the seals and gaskets into the atmosphere, causing air pollution and odors. The first refinement in crankcase ventilation was the road draught tube.
A/B have primary VF25 for automatic transmission or VF26 for manual and secondary VF27 turbo's. C have primary VF31 and secondary VF32 turbo's. D have primary VF33 ( 46.5 / 9-blade turbine wheel and a / 6 + 6 blade compressor ) and secondary VF32 ( exhaust side it uses a 46.5 / 9-blade turbine wheel, teamed with a 52.5 / 10-blade compressor ...
A rev limiter is a device fitted in modern vehicles that have internal combustion engines. They are intended to protect an engine by restricting its maximum rotational speed, measured in revolutions per minute (RPM). Rev limiters are pre-set by the engine manufacturer. There are also aftermarket units where a separate controller is installed ...
In the middle of the rev range, a boost was derived from both systems, while at the highest revs the system disconnected the drive from the supercharger and isolated the associated ducting. [13] This was done in an attempt to exploit the advantages of each of the charging systems while removing the disadvantages.
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An updated version of the Generation III 3400 engine. It includes a new block, intake manifold, oil pan, engine cover, and fuel system, as well as electronic throttle control. [11] It was built in China and shipped to Canada for installation in the Chevrolet Equinox and Pontiac Torrent. The LNJ makes 185 hp (138 kW) and 210 lb⋅ft (285 N⋅m ...
A leak in the head gasket - often called a "blown head gasket" - can result in a leak of coolant, the combustion gasses, or both. Blue smoke from the exhaust suggests that excess oil is entering the combustion chambers (although there are other possible causes than a head gasket leak). White smoke from the exhaust suggests that coolant is ...