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  2. Automobile engine replacement - Wikipedia

    en.wikipedia.org/wiki/Automobile_engine_replacement

    A short block is an engine sub-assembly comprising the portion of the cylinder block below the head gasket but above the oil pan, [4] which usually includes the assembled engine block, crankshaft, connecting rods, and pistons with piston rings properly installed. [5] An in-block cam engine short block includes the camshaft, timing gear, and any ...

  3. Conservation and restoration of road vehicles - Wikipedia

    en.wikipedia.org/wiki/Conservation_and...

    The engine itself, plus the transmission, clutch, overdrive unit, and even the driveshaft must be meticulously inspected, cleaned, and measured for wear. This will show up as a deviation from original factory specifications. All of the parts – block, crankcase, head, transmission housing, etc. – should be inspected for cracks or other damage.

  4. Valve job - Wikipedia

    en.wikipedia.org/wiki/Valve_job

    A valve job is the colloquial term for resurfacing the mating surfaces of the poppet valves and their respective valve seats that control the intake and exhaust of the air/fuel mixture in four stroke internal combustion engine, replacing valve oil seals, replacing any deficient valve springs, and otherwise bringing the components of a cylinder head up to manufacturer’s spec. [1] A ...

  5. Core plug - Wikipedia

    en.wikipedia.org/wiki/Core_plug

    Core plugs can also sometimes prevent freeze damage to the motor. During the early stages of the freezing of the engine coolant a freeze plug will sometimes burst or pop out, and thus allow the coolant to exit the engine, before it might expand within the engine during the freezing process and potentially crack the engine block. [2]

  6. Glossary of construction cost estimating - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_construction...

    A Allocation of costs is the transfer of costs from one cost item to one or more other cost items. Allowance - a value in an estimate to cover the cost of known but not yet fully defined work. As-sold estimate - the estimate which matches the agreed items and price for the project scope. B Basis of estimate (BOE) - a document which describes the scope basis, pricing basis, methods ...

  7. Engine block - Wikipedia

    en.wikipedia.org/wiki/Engine_block

    Engine blocks of comparable design, but using Al-Si alloys, are not lighter than cast iron engine blocks in the same ratio as that for the specific weights of the materials. In engine blocks made of gray cast iron, weight can be reduced by optimizing the structure and thin-wall casting. With this casting technique, a wall thickness of as little ...