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A rocker cover, (UK), or valve cover (elsewhere) is a cover that encloses the rocker arm in an internal combustion engine, bolting with a gasket seal to the engine head. Engines with more than one head (such as a V8 ) will have multiple rocker covers.
The LH engine was a series of V6 engines developed by Chrysler Corporation for its LH platform cars. It is a 60-degree V6 designed for front-wheel drive applications, later adapted to rear-wheel drive ones. The 2.7 liter LH engine is based on the SOHC 3.5 L engine, though bore spacing, cylinder bore, stroke, and assembly site are different.
The engine has a bore and stroke of 84 mm × 90 mm (3.31 in × 3.54 in) with a compression ratio of 16.0:1, and generates 250 hp (186 kW) at 3,250 rpm and 440 lb⋅ft (597 N⋅m) of torque at 1,750 rpm, paired with a Ford–GM 10-speed automatic transmission. It provided a towing capacity of up to 11,440 lb (5,189 kg) when properly equipped.
In an internal combustion engine, a head gasket provides the seal between the engine block and cylinder head(s). Its purpose is to seal the combustion gases within the cylinders and to avoid coolant or engine oil leaking into the cylinders. [1] Leaks in the head gasket can cause poor engine running and/or overheating.
These blow-by gases, if not ventilated, inevitably condense and combine with the oil vapor present in the crankcase, forming oil sludge. Excessive crankcase pressure can furthermore lead to engine oil leaks past the crankshaft seals and other engine seals and gaskets. Therefore, it becomes imperative that a crankcase ventilation system be used.
The High Value engine family from General Motors is a group of cam-in-block or overhead valve V6 engines.These engines feature cast iron blocks and aluminum heads, and use the same 60° vee bank as the 60° V6 family they are based on, but the new 99 mm (3.90 in) bore required offsetting the bores by 1.5 mm (0.059 in) away from the engine center line.
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