Abstract
The environment under which a cylinder-head gasket has to function is reviewed and a typical cylinder head to cylinder block assembly is considered, outlining the temperature variations in the inlet and exhaust ports. Curves showing head-face to block-face movement for varying engine speeds and coolant temperatures are reviewed with power units running at accelerated gasket destruction test conditions. Comparisons are made between cast-iron block and aluminium head and cast-iron head and block for both petrol and diesel engines.
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