Oil Filter; Normal Oil Pressure; Engine Oiling System - Mazda 1983 RX7 Service Manual

The crankcase capacity is 4.9 quarts (4.6L), including
filter.

OIL FILTER

A full-flow, disposable cartridge-type filter is mounted on
the rear housing.

NORMAL OIL PRESSURE

Normal oil pressure is 10-26 psi (.7-1.8 kg/cm
speed, 64-78 psi (4.5-5.5 kg/cm

ENGINE OILING SYSTEM

Engine oiling system is forced circulation using a 2 rotor
type oil pump. Oil pump is mounted on front housing and is chain
driven through eccentric shaft. The oil pressure is maintained through
a regulator valve and pressure control valve. A full flow oil filter
and oil cooler are mounted on the rear housing.
Oil is directed from the oil pump to the oil pressure control
valve in the front cover. The oil then flows to the oil filter/cooler
assembly on the rear cover which directs lubricating oil to all
internal parts. The pressure regulator valve in the rear cover acts as
a secondary pressure regulation device.
The oil pressure control valve is designed to open at 114 psi
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(8 kg/cm ). The free length of the control valve spring should be 2.
74" (69.6 mm). Never use an oil pressure control spring from a
previous year in a 1983 model. The cap bolt and spring are painted
yellow in 1983. The oil pressure regulator valve will relieve pressure
at 71.1 psi (4.9 kg/cm
mm).
The engine is equipped with a metering oil pump which
regulates the amount of oil pumped to the float chamber of the
carburetor. The oil enters the combustion chamber with the air/fuel
mixture to lubricate the seals within the chamber. The amount of oil
increases as engine RPM increases. The metering pump control lever is
actuated by a rod connected to the throttle lever.
1.1L ROTARY
Article Text (p. 21)
1983 Mazda RX7
For www.iluvmyrx7.com
Copyright © 1998 Mitchell Repair Information Company, LLC
Sunday, August 26, 2001 04:57PM
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) at 3000 RPM.
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). Its spring free length should be 1.83" (46.4
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) at idle