Engine Cooling System - ILMOR MV-10 Owner's Manual & Installation Manual

Owner's Manual &
Installation Instructions
Revision 6e

Engine Cooling System

The MV10 is supplied with a closed cooling system very similar to a traditional automotive
application. However, a heat exchanger is used in place of a radiator. The heat
exchanger uses seawater to extract heat from the coolant. A stainless steel overflow tank
with ~2 quart capacity is supplied with all new MV-10 packages.
Sea Water Plumbing
The sea water system should be fitted with a high capacity sea strainer to remove debris
from entering the external cooling system. Failure to do this will cause eventual
deterioration of the heat exchangers leading to engine overheating and possible premature
failure.
IMPORTANT
The sea strainer must be fitted with a suitable pressure relief valve, giving a maximum
pressure of 25psi of supply water pressure. Failure to do this can lead to pressure spikes
in the raw water system, possibly leading to the rupture of water lines or heat exchangers
causing the engine to overheat. The ability to monitor raw water pressure can be
accomplished by removing a zinc anode from the front of the oil cooler and replacing it
with an appropriate fitting or sensor. See figure 12 on page 15 for further detail.
1-¼" ID high pressure hose must be used to connect the sea strainer to the raw water
pump inlet. Using a smaller hose will restrict cooling water flow to the engine and heat
exchangers which could lead to engine overheating and premature failure.
Coolant Type
I
Only use coolant approved by lmor, as listed in "Engine Specifications" section.
A 50/50 solution of coolant and distilled water is suggested for optimal performance, to
prevent corrosion within the engine, and preserve the water pump seals.
Capacity
See "Maintenance – Engine Coolant"
Page 21