© 5/2013 Ilmor Marine, LLC, Version 1.0 2-3
INTRODUCING THE MV8
FUEL SYSTEM
Ilmor’s MV8 engines are equipped with multi-port sequential fuel injection
system, the most up-to-date system available in the industry, featuring
E-Controls engine controller that is capable of meeting all emission, with
On-Board Diagnostics Marine (OBD-M) and driveability requirements of
marine applications.
WARNING! Replacement of any part of the fuel system must be done
with Ilmor-authorized parts only. All fuel system lines and connections
must meet the requirements of U.S. Coast Guard (USCG) regulations. is
means that hoses must meet or exceed SAE Standard J1527 DEC85, and
hoses used for fuel delivery must meet or exceed specication in USCG
regulations, Sec. 183.540 for recreational boating. Additionally, all fuel
hose must meet the 15 g/m
2
limit for fuel permeation. All plumbing for
the fuel system on Ilmor engines, and the boats in which Ilmor authorizes
placement, meet or exceed all requirements. See Section 3, Fueling the
MV8, for additional information.
COOLING SYSTEM
Unlike automotive cooling systems that use radiators (air-to-uid heat
exchangers) for cooling, marine engines use uid-to-uid heat exchangers.
Cooling is provided by the body of water in which the boat is operated. A
raw water pump (rubber impeller pump) draws water into the boat where
it is distributed to the engine, exhaust system, and heat exchangers for
maintaining the engine at an acceptable heat-operating temperature range.
ere are two main types of cooling systems used in Ilmor engines, one of
which will be found with each engine depending upon the type selected:
1. Open Cooling System
(Raw water from a body of water ows through the engine and exhaust
manifolds.)
2. Closed Cooled System (also known as Ocean Performance Series)
(Engine coolant ows through the engine and exhaust manifolds.)
WARNING! Never operate the engine without an adequate and
uninterrupted amount of water owing through the cooling system.
Ensure that the raw water pick-up remains clear of debris at all times. Even
small amounts can clog or block the pick-up, which is located beneath the
boat. e raw water pick-up MUST have an uninterrupted input of water
whenever the engine is running.
NOTICE: Marine growth occurs in brackish and salt water, and even in
what is referred to as “fresh” or salt-free water. Therefore, it is important
to flush the boat’s cooling system with fresh water after each use.
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