Mercury Bravo Three - Engine Specifications

50
CB175
Engine Specifications
454 C.I.D.
(7.4 L)
MODEL
7.4L Bravo Three
Propshaft Horsepower
1
V8
300
Propshaft Kilowatts
1
224
Displacement
Engine Type
4.25 in.
(108mm)
Bore
4.00 in.
(101.6mm)
Stroke
8.6:1
Compression Ratio
Compression Pressure
150 psi
(1035 kPa)
4200-4600 RPM
Maximum RPM @
WOT
650 RPM
2
Idle RPM in
Forward Gear
3-7 psi (21-48 kPa)
Fuel Pump Pressure
30-70 psi
(207-483 kPa)
Oil Pressure @
2000 RPM
4 psi (28 kPa)
Min. Oil Pressure
@ Idle
Thermostat
160
° F (71° C)
1
Power Rated in Accordance with NMMA procedure using Marine Engine Rating Code
SAE J1228 (Technically Identical to ISO 3046 and ICOMIA 28-83).
2
A special procedure must be followed for adjusting idle RPM in Neutral. Consult your Autho-
rized MerCruiser Dealer before adjusting idle speed.