Marine engine torque specs

Written by manny jeter
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Marine engine torque specs
Mercruiser marine engines power many boats. (boats image by Warren Millar from

Mercury Marine creates the Mercruiser line of marine engines. Mercury Marine operates under the Brunswick Corp. and was founded in 1939. Mercury Marine creates commercial, private and also government engines of all shapes and sizes. The Mercruiser is a sterndrive inboard marine engine. The Mercruiser line of marine engines has been praised for their superior dependability and performance.

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Alternator, Camshaft and Carburetor

Using the Mercruiser V6/V8 5.7-litre engine as an example, the alternator brace to alternator has 20.6ft.-lbs. of torque. The alternator brace to engine has 30ft.-lbs. of torque. The alternator mounting bracket has 30ft.-lbs. of torque. The camshaft sprocket gear has 17.7ft.-lbs. of torque. The marine engine's carburettor has 11.1ft.-lbs. of torque.

Mercruiser Marine Engine Parts

The Mercruiser marine engine's connecting rod cap nuts have 45ft.-lbs. of torque. The crankshaft pulley has 35ft.-lbs. of torque. Its cylinder head bolts have 65ft.-lbs. of torque. The marine engine's exhaust manifold and filter adaptor have 20ft.-lbs. of torque. The engine's flywheel has 70ft.-lbs. of torque. The flywheel's housing to block has 30ft.-lbs. of torque, and its housing cover has 6.6ft.-lbs. of torque. The front mount bracket has 30ft.-lbs. of torque. The intake manifold for the engine has 35ft.-lbs. of torque. The main bearing cap has 80ft.-lbs. of torque, and its bolt has 74ft.-lbs. of torque.

Other Torque Specifications

The Mercruiser's fuel pump has 25ft.-lbs. of torque. The engine's oil baffle nuts have 25ft.-lbs. of torque. Its oil filter adaptor bolt and oil pan drain plug have 15ft.-lbs. of torque each. The oil pan nuts have 8.8ft.-lbs. of torque, and the oil pump has 65ft.-lbs. of torque. The Mercruiser's power steering pump bracket has 30ft.-lbs. of torque. The engine's rear mount has 40ft.-lbs. of torque. The spark plugs have 15ft.-lbs. of torque, and the starter motor has 50ft.-lbs. of torque. There is 50ft.-lbs. of torque from the engine's transmission to its housing. The marine engine's seawater pump bracket has 30ft.-lbs. of torque.

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