Re: [Amel Yacht Owners] Re: Raw water manifold replacement


Alexandre Uster von Baar
 

On my Onan, the zinc are on the heat exchanger.

I don’t have any on my engine (Volvo)

Sincerely, Alexandre
SM2K #289 NIKIMAT
Harbor View Marina, Tortola, BVI




--------------------------------------------

On Mon, 1/9/17, Vladimir Sonsev sonsev52@gmail.com [amelyachtowners] <amelyachtowners@yahoogroups.com> wrote:

Subject: Re: [Amel Yacht Owners] Re: Raw water manifold replacement
To: amelyachtowners@yahoogroups.com
Date: Monday, January 9, 2017, 10:18 AM


 









Hi Bill,
How did you attach zink to the raw water
manifold?

I do not see zinks on the Yanmar or Onan.
Vladimir

SM#345

On Jan 9, 2017 10:30 AM,
"greatketch@yahoo.com
[amelyachtowners]" <amelyachtowners@yahoogroups.com>
wrote:















 









Don't forget about the zincs in the engine and
generator... they are there for the same reason:  the zinc on the rudder is NOT
going to protect anything inside the engine room.
 
The bonding serves two
purposes: to drain off stray currents and protect underwater
metals from galvanic corrosion with the zinc.  For parts up
inside the engine room connected to the ocean by a hose the
galvanic protection available from an external zinc is so
close to zero it makes no nevermind, but the stray current
protection is still really important. That's why the
engine and generator zincs are so important to keep on top
of seperate from the rudder zinc.
Worst case:  the zinc installed in
the manifold dissolves faster than the rudder zinc.  But it
is a piece of cake to replace.  And guess what?  If it
dissolves quickly, that means it is needed!
It sure sounds to me like some of
the original manifolds installed had some brazing issues
that might have been helped by an installed zinc if they are
failing in as little as 8 years.
Bill
KinneySM#160
 HarmonieRose
Island, Bahamas


---In amelyachtowners@yahoogroups.
com, <yahoogroups@...> wrote :

If you place a zinc on the manifold and also leave
the manifold connected to the bonding system, that zinc will
be the closest zinc to all items in the bonding system and
will deteriorate before the rudder zincs.Yes, it can't hurt, but I would not advise it
if the manifold is connected to the bonding system.Bill Rouse

BeBe Amel 53 #387

Sent from my tablet

+1832-380-4970 USA Voice
Mail
































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