Mercury MERCRUISER Product Applications Manual

Cooling System
90-863758060 AUGUST 2006 Page 7A-3
Seawater Supply System
Specifications
SEAWATER SUPPLY HOSE
Seawater Supply Hose Specifications
Seawater inlet hose 32 mm (1-1/4 in.) I.D. (wire reinforced)
Seawater pickup
Low restriction with 32 mm (1-1/4 in.) connectionsSeacock (optional)
Sea strainer (optional)
SEAWATER INLET
Seawater Inlet Specifications
See Seawater Inlet Restriction Test; Collect data at the seawater pump inlet (vacuum).
Maximum water inlet restriction 17 kPa (2.5 psi)
SEAWATER FLOW
Seawater Flow Specifications
See Seawater Supply Test; Collect data within 152 mm (6 in.) of the seawater pump outlet.
Inboard
Models
Cooling Seawater Pickup RPM
Minimum Flow liter
(gallon) per minute
Minimum kPa (psi)
350 Mag MPI
Closed Cooling
System
Through-Hull 4000
106 liter (28 GPM) 138 kPa (20 psi)
350 Mag MPI
Horizon
MX 6.2 MPI
MX 6.2 MPI
Horizon
8.1S Horizon
76 liter (20 GPM) 75 kPa (11 psi)
8.1S HO
Seawater Flow Specifications
See Seawater Supply Test; Collect data within 152 mm (6 in.) of the seawater pump outlet.
Tow Sports
Models
Cooling Seawater Pickup RPM
Minimum Flow liter
(gallon) per minute
Minimum kPa (psi)
5.7L
Closed Cooling
System
Through-Hull 4000 65 liter (17 GPM) 42 kPa (6 psi)
350 Mag MPI
Black Scorpion
MX 6.2 Black
Scorpion
COLLECTING SEAWATER PRESSURE DATA
IMPORTANT: For models equipped with a seawater pressure transducer, collect the
seawater pressure data using a Computer Diagnostic System (CDS).
Computer Diagnostic System (CDS) Order through SPX
IMPORTANT: On inboard models, the seawater pressure data is to be collected within
152 mm (6 in.) of the seawater pump outlet.

Mercury MERCRUISER Specifications

General

Number of Cylinders	4, 6, 8
Engine Type	Inboard/Outboard (Sterndrive)
Fuel Type	Gasoline
Aspiration	Naturally Aspirated
Cooling System	Water Cooled
Weight	Varies by model
Cylinder Configuration	Inline
Displacement Range	3.0L-8.2L