[C320-list] Perkins Perama M30 Engine Cooling System Zincs

[Dave Hupe]

Mark-

I also have found only the same 2 engine manuals.  I have not heard about engine zincs until you mentioning this topic. Nothing I have (including an exploded view of the water pump, thermostat and heat exchanger system) allude to engine zincs. 

I just found this post elsewhere related to this issue when I googled Perkins engine zincs   
 "The 4.108 and all other Perkins marine engines did not have zinc pencils fitted as standard. Presumably they have never been used for exactly the reason described by David; they can break up and cause raw water flow problems. If the engine is properly bonded to the boat's main anode, zincs are not required. You will only find zincs on a 4.108 if the marinisation is non-standard or it has been modified to incorporate them." 

Dave Hupe
1994 (hull #32)
Holland, MI
--------------------------------------------
On Sun, 6/18/17, Mark Cole <boatnboot at q.com> wrote:

 Subject: Re: [C320-list] Perkins Perama M30 Engine Air Cleaner
 To: C320-List at Catalina320.com
 Date: Sunday, June 18, 2017, 12:28 PM
 
 I’ve only had my 320 for a
 little over a year and, while I was thinking of checking to
 see if there was a filter in that box, it hasn’t come to
 the top of my priority list yet.  The last air filter box I
 opened up did not have a replaceable filter element inside,
 just the metal screen on the outside and a metal baffle
 inside and neither really needed any cleaning.  I asked a
 diesel maintenance guy in the marina and he was the one that
 told me  marine engines aren’t exposed to the same
 contaminants as road vehicles are.
 
 While on the subject of the Perkins M30, I have
 only been able to find two “manuals” specific to the
 engine.  One is a very simple two pages that tells how to
 start the engine and gives amounts and types for oil,
 transfer fluid and the like.  Very basic info.  The other
 is the full shop manual that gives very in depth information
 on disassembling and reassembling the engine.  I haven’t
 found anything in between these two extremes.  I’m
 looking for a basic maintenance guide; something in between
 these two extremes.  
 
 One
 specific piece of information I haven’t been able to track
 down is wether or not the water cooling system on the M30
 has any pencil zincs inside and where they are located. 
 Have you found/changed zincs on you engine?
 
 Mark
 Fiddler’s Green, #8