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The oil pan dipstick is located on the passenger side above the oil pan rail; this design was phased in on both the 90° V6 and Small Block Chevrolet assembly lines (for engines manufactured after 1979) sharing the same casting dies. All the engines use a 1-6-5-4-3-2 firing order. [2]
Outboard sizes range from 2.5 horsepower (1.9 kW) to 600 horsepower (450 kW). MerCruiser sterndrives and inboards range from 135 to 430 horsepower (320 kW) and Mercury Racing outboards produce up to 450 horsepower (340 kW) and sterndrives to 1,750 horsepower (1,300 kW).
4 3.9/4.0. 5 4.2. 6 4.3. 7 4.4. 8 4.5. 9 4.6. 10 ... Water-cooled: Output; Power output: ... the engine was improved with the 'rope' oil seals for the crankshaft ends ...
Trim is the angle of the motor in relation to the hull, as illustrated below. The ideal trim angle is the one in which the boat rides level, with most of the hull on the surface instead of plowing through the water. If the motor is trimmed out too far, the bow will ride too high in the water. With too little trim, the bow rides too low.
The interchangeable parts include the rotating assembly (crank shaft, pistons, connecting rods, and flywheel/flex-plate) one piece rear main seal housing, oil pan and valve cover gaskets and valvetrain assembly (not including timing set, which includes a gear to drive the water pump). The LT1 uses a new engine block, cylinder head, timing cover ...
The firing order of older big-block engines is 1-8-4-3-6-5-7-2 [63] while Vortec 8100's firing order is 1-8-7-2-6-5-4-3. Other upgrades of Vortec 8100 include a new 18-bolt head bolt pattern, longer connecting rods, different symmetrical intake ports, different oil pan rails, and the use of metric threads throughout the engine.
In addition, overseas plants were refined to reduce operations costs and provide more efficient handling and storage. Streamlining made product innovation easier. Power steering, variable-ratio oiling—delivering exact mixtures of gasoline and oil to the engine—and saltwater protection were new features appreciated by powerboat buyers.
The cylinder firing order was changed to 1-8-7-2-6-5-4-3 [43] so that the LS series now corresponds to the firing pattern of other modern V8 engines (for example the Ford Modular V8). 3.898 in. bore blocks (1997–2005)