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Specifications-750 - Ducati 750 Sport Owner's Manual

Ducati motorcycles owner's manual.
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SPECIFICATIONS-750
Engine
Two cylinder four stroke "L" configuration
Four stroke twin cylinder
90 degree longitudinal "L" configuration, supported in a cradle frame.
Bore: 80mm (3.1496")
Stroke: 74.4mm (2.9291")
Cylinder capacity: 748cc (45.629 cu. in.)
Compression ratio: 8.5:1
Deeply finned cylinders in light alloy with special cast iron liners inserted. Connecting rods in
special steel, with roller cage at the big end and the small end bushed to take the gudgeon
pin;Light alloy pistons, press forged with the skirt in one piece and three piston rings, one of
which is an oil scraper. Cast light alloy cylinder head, closely finned with inserted valve seats.
Timing
The timing system is provided with overhead valves, inclined at 800, timed by an overhead
camshaft. The valves are made of special steel.
SUCTION COMPRESSION WORKINGSTROKE EXHAUST
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With a valve/rocker clearance of 0.10mm (0.0039") for both inlet and exhaust the timing is as
follows: Inlet opens 650 before T.D.C. and closes 84° after B.D.C.; Exhaust opens 74° before
B.O.C. and closes 580 after T.O.C.
The tappets are adjusted by means shims on the end of the valve stems, and the clearance
should be checked after the timing has been set and with the engine cold.
The timing gears in the crankshaft and on the cam shaft are provided with reference marks
and care should be taken to re-align these when assembling the engine after repair or
maintenance.
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Fig.
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