Cleaning The Engine Compartment And Preventing Corrosion - ILMOR MV8 Owner's Manual

SECTION 7 ILMOR MV8 OWNER'S MANUAL
7-14
CLEANING THE ENGINE COMPARTMENT
AND PREVENTING CORROSION
The engine compartment should receive a good, general cleaning of the
interior as well as the engine and transmission exteriors. There is reward in
the cleaning beyond enhancing the overall value of the boat. Cleaning with
simple soap and water may reveal if any corrosion has occurred.
Corrosion can occur in any type of water and on any metal surface,
even when the type of metal, such as stainless steel, has been chosen for
components. But corrosion is of particular concern for boats that will be
operated in salt water, even if the system is closed cooling. Salt water may
still enter the engine compartment due to the engine compartment cover
being open to vent carbon monoxide and prevent explosive fumes. The
exhaust system will always be subject to contact with salt water in these
conditions, too.
Galvanic corrosion, or electrolysis, is the decomposition of metal due to
the effects of electrolytic action. When two dissimilar metals are immersed
in a conductive fluid such as salt water, an electric current is produced,
much like the action of a battery. As the current flows, it takes with it tiny
bits of the softer metal. If left unchecked, severe damage may occur over
time.
A boat properly prepared for operation in salt water will have self-
sacrificing zinc anodes mounted on the transom, and possibly elsewhere
underwater. These anodes are intended to reduce the effects of galvanic
corrosion to critical metal areas of the boat. The zinc anodes should be
checked regularly, and when significant erosion is shown, the anodes
should be replaced. More information regarding the zinc anodes is
contained in the boat manufacturer's Owner's Manual.
NOTICE: Always properly clean the engine and transmission if exposed
to salt water. Exposure to salt water causes corrosion, leading to
significant damage to metal, including stainless steel. If evidence
of corrosion shows on the engine, carefully clean the engine and
transmission with fresh water and a mild soap solution after use in
salt water. A protective marine oil may be applied to exposed metal to
halt the acceleration of corrosion. Failure to properly clean boat or pay
attention to corrosion matters will void the warranty.
© 5/2013 Ilmor Marine, LLC, Version 1.0