Eccentric Shaft Bypass Valve Construction; Balance Weight, Counterweight (At), Flywheel (Mt) Outline - Mazda RX-8 2004 Service Highlights

ECCENTRIC SHAFT BYPASS VALVE CONSTRUCTION

• An eccentric shaft bypass valve has been adopted to shorten the engine warm up period. The eccentric shaft
bypass valve allows engine oil in the oil passage to escape at cold-engine start, maintaining a pressure in the
eccentric shaft that prohibits injection of rotor cooling engine oil from the oil jet plugs until the engine is warmed
up.
ENGINE OIL TEMPERATURE: 60˚C {140˚F} OR ABOVE
ENGINE OIL TEMPERATURE: LESS THAN 60˚C {140˚F}
ECCENTRIC BYPASS VALVE
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BALANCE WEIGHT, COUNTERWEIGHT (AT), FLYWHEEL (MT) OUTLINE

• The flywheel is approximately 20% lighter than the previous flywheel for improved engine response.
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01–10–10
MECHANICAL
ECCENTRIC SHAFT
ECCENTRIC SHAFT
BYPASS VALVE
ENGINE OIL
OIL PRESSURE RELIEF
CHU011011901S02
ROTOR
OIL JET PLUG
ENGINE OIL
CHJ0110S010
CHU011011901S03