zincs

Cool It

Petty Officer 1st Class
Joined
Feb 13, 2004
Messages
284
hey guys i just bought a 29 ft formula pc at end of year last season and i am it has twin 350 merc mags and alpha gen one drives my - i just noticed that the drives only have a rudder zinc and trim piston zincs -it seems to me that might not be enough corroion protection in salt water -any opinions would help? Thanks Russell
 

Bt Doctur

Supreme Mariner
Joined
Aug 29, 2004
Messages
19,344
Re: zincs

should be enough, my twin was the same way. I would add another negative battery cable between the engine blocks.
 

Cool It

Petty Officer 1st Class
Joined
Feb 13, 2004
Messages
284
Re: zincs

Thanks -but dont know what u mean about the neg battery cable and how would that help the drives? Thanks
 

Bondo

Moderator
Staff member
Joined
Apr 17, 2002
Messages
71,082
Re: zincs

Thanks -but dont know what u mean about the neg battery cable and how would that help the drives? Thanks

Ayuh,... It'll Bond the 2 drivelines together, so's they don't eat each other...
 

Don S

Honorary Moderator Emeritus
Joined
Aug 31, 2004
Messages
62,321
Re: zincs

Thanks -but dont know what u mean about the neg battery cable and how would that help the drives? Thanks

Having the battery grounds from each battery going to the engine block will do the same thing. ALL grounds must be hooked together electrically on a boat.
 

LilRedNeckGirl

Petty Officer 2nd Class
Joined
Jan 25, 2010
Messages
184
Re: zincs

Zinc's, too many is worse then not enough. Sounds like you have plenty. Watch them for erosion and replace as nessessary, but dont get nuts adding more or you will end up eating your drives away.
 

Brentathon

Petty Officer 1st Class
Joined
Dec 29, 2009
Messages
397
Re: zincs

"Too many is worse than not enough"??? I've never heard that about sacrificial anodes.......care to elaborate on that?
 
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