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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 ...
This maintenance is also imperative to prevent the engine from overheating (the first sign of a blown head gasket) and warping or cracking the head. The cast-iron liners in the aluminum block version can also shift if the head bolts are not properly torqued and the engine is allowed to overheat. Good replacement heads and aluminum blocks for ...
Internal components (crank, rods, pistons, etc.) were the same as used in the iron engine, and an iron cylinder head was used with a special copper-asbestos gasket. The aluminum block weighs about 80 lb (36 kg) less than the iron RG block.
The 4A9 is Mitsubishi's first four-cylinder engine family to adopt a high-pressure die-cast aluminum block. [1] [3] All engines developed within this family have aluminum cylinder block and head, four valves per cylinder, double overhead camshaft layouts, and MIVEC continuous variable valve timing (intake only).
Overheating was a serious concern for the engine, since the engine block was of an open-deck design, severe overheating could cause the cylinder barrels to warp and pull away from the head gasket, causing coolant leaks into the cylinders and cylinder scuffing. Maintaining oil and coolant levels was crucial for the engine.
The gaskets for flanges can be divided into four major categories: Sheet gaskets; Corrugated metal gaskets; Ring gaskets; Spiral wound gaskets; Sheet gaskets are simple, they are cut to size either with bolt holes or without holes for standard sizes with various thickness and material suitable to media and temperature pressure of pipeline.
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