Zincs on Perkins 4-108

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Bill Michne

Zincs on Perkins 4-108

Post by Bill Michne »

Does anyone know if this engine uses zincs in the cooling system? None of the literature I have on the engine mentions it. I have zincs on the prop shaft and on the keel grounding plate but am not totally convinced that the brass innards of the heat exchanger are adequately protected.

Bill Michne
Mintaka
CD 40 #7
Ken Coit

Re: Zincs on Perkins 4-108

Post by Ken Coit »

Bill,

I don't think so, but I could easily be wrong. Somewhere I read something about that, maybe in my owners manual? I will check next time I am at the boat.

Maybe someone else knows? Maybe it depends on the version?

Ken
Bill Michne wrote: Does anyone know if this engine uses zincs in the cooling system? None of the literature I have on the engine mentions it. I have zincs on the prop shaft and on the keel grounding plate but am not totally convinced that the brass innards of the heat exchanger are adequately protected.

Bill Michne
Mintaka
CD 40 #7


parfait@nc.rr.com
Dub Baker

Re: Zincs on Perkins 4-108

Post by Dub Baker »

Bill Michne wrote: Does anyone know if this engine uses zincs in the cooling system? None of the literature I have on the engine mentions it. I have zincs on the prop shaft and on the keel grounding plate but am not totally convinced that the brass innards of the heat exchanger are adequately protected.

Bill Michne
Mintaka
CD 40 #7
There should be a screw-in zine in the heat exchanger. I believe that is the only one, but it is a learning process.



rbaker3@tuelectric.com
matt Cawthorne

Re: Zincs on Perkins 4-108

Post by matt Cawthorne »

Bill,

Not all Perkins 4.108's had them. If you have the thin skinned round heat exchanger that sits across the back of the engine then you have
one. If you have the heavy rectangular heat exchanger that is mounted fore and aft on the port side then you probably do not have one. I
asked the same questions of a Perkins mechanic and he assured me that my engine did not have one. It is rather discomforting to not have
one, but the heat exchanger is very heavy.

matt



mcawthor@bellatlantic.net
Ken Coit

Re: Zincs on Perkins 4-108

Post by Ken Coit »

Bill,

I have the Perkins 4.108M owners manual (Handbook for Marine Diesel Engines 4.108M) in front of me and I find no reference to any zinc anodes for any version of the engine. They are not listed as a preventative maintenance item.

However, that doesn't make me feel completely comfortable, so I will continue to look.

Ken Coit
S/V Parfait
Raleigh, NC
Bill Michne wrote: Does anyone know if this engine uses zincs in the cooling system? None of the literature I have on the engine mentions it. I have zincs on the prop shaft and on the keel grounding plate but am not totally convinced that the brass innards of the heat exchanger are adequately protected.

Bill Michne
Mintaka
CD 40 #7


parfait@nc.rr.com
Jeff Barnes

Re: Zincs on Perkins 4-108

Post by Jeff Barnes »

Bill:

Matt is correct in his reply regarding the round exchanger that sits on the back of the engine. It has a zinc, on the port side I believe. If you have this exchanger, you may however have to cut some of the end of the zinc before screwing it in all the way.

Jeff



jbarnes@oxbio.com
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