ILMOR 2011 MV8 - Replacing the Zinc Anodes (Saltwater Applications); Cleaning Engine Compartment and Corrosion Prevention; Engine Tune-Up

2011 ILMOR MV8 Owner’s Manual • Page 36
verticallynearthefrontoftheengineeithernexttotheserpentinebelt(5.7L)orinfront
oftheserpentinebelt(6.0L).
 Usingan11/16”socketwrench,removethezincanodefromthelowerendoftheheat
exchanger.
 Inspecttheanodeforwear,iftheanodeexhibitssignsofexcesswearorhasreducedto
halfofitsoriginalsizeitwillneedtobereplaced.
 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can
revealifanycorrosionhasoccurredduringthepreviousseason’soperation,andestablishes
abaselineforthenextseason.
 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com-
partment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(2)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.
Exposure to salt water causes corrosion, leading to signicant damage to metal, in-
cluding stainless steel and chrome. If evidence of corrosion shows on the boat, the
engine and transmission should be carefully cleaned with fresh water and a mild
soap solution after use in salt water. A protective marine oil may be applied to expo-
sure metal to halt the acceleration of corrosion. Failure to pay attention to corrosion
matters will void the warranty.
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A complete engine tune-upneedstobedoneatleastevery300hours
orannually,whichevercomesfirst.Thisincludesbutisnotlimitedto:replacementofthe
sparkplugsandsparkplugwires(ifneeded),acheckoftheinstalleddistributorposition
andshaftalignment,aswellascleaningthebreatherhose.ILMORstronglyrecommends
havingtheenginetune-upperformedbyanauthorizedILMORdealer.
Cleaning Engine
Compartment and
Corrosion Prevention
Replacing the
Zinc Anodes
(Saltwater
Applications)
Engine Tune-Up