Engine Anodes Perkins ST6.3544M
- Thread starter CaptTom
- Start date
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If you have answers, please help by responding to the unanswered posts.
If you have answers, please help by responding to the unanswered posts.
Edelweiss
Guru
A lot of the early 6.354's had no pencil zinc in the block. Mine has one on the top of the heat exchanger and one on the bottom of the oil cooler. Nothing else in either of the blocks.
Gulf Comanche
Guru
- Joined
- Dec 16, 2007
- Messages
- 1,045
- Location
- U.S.A.
- Vessel Name
- Old School
- Vessel Make
- 38' Trawler custom built by Hike Metal Products
My 4-236 has them on the heat exchanger and oil cooler.
moonchaser
Member
I have twin 1988 Perkins 6.354s in my Heritage East Sundeck and I too am looking for the zincs. I will check the oil coolers & heat exchangers. Thanks
moonchaser
Member
Looked all over but cannot locate???
DensPT35
Member
Perkins engine zincs
I have a 1984 PT 35 Sundeck with a single 6.354 Turbo and have never found zincs. Had a guy look and he found nothing. Can zincs be added? My thought is after all this time if it's had no zincs why bother. I do have 2 on the shaft, one on the rudder, one each on the trims and 2 large on the stern.
I have a 1984 PT 35 Sundeck with a single 6.354 Turbo and have never found zincs. Had a guy look and he found nothing. Can zincs be added? My thought is after all this time if it's had no zincs why bother. I do have 2 on the shaft, one on the rudder, one each on the trims and 2 large on the stern.
Coalman
Veteran Member
Changing engine zinc anodes
I have a Perkins 6.354M natural aspiration Diesel engine in my 1996 Monk 36 trawler and have a question regarding changing out the pencil zincs. I believe there are only one or two zincs to maintain, may be wrong about that. My question is do I need to take any precautions before unscrew them, pressure behind them, excessive water or oil or coolant out pore, etc.? Any ideas?
RICK
MTOA
MOA
AGLCA
I have a Perkins 6.354M natural aspiration Diesel engine in my 1996 Monk 36 trawler and have a question regarding changing out the pencil zincs. I believe there are only one or two zincs to maintain, may be wrong about that. My question is do I need to take any precautions before unscrew them, pressure behind them, excessive water or oil or coolant out pore, etc.? Any ideas?
RICK
MTOA
MOA
AGLCA
Duvie
Senior Member
- Joined
- Nov 5, 2011
- Messages
- 341
ST6.3544M coolers
I think many think the aluminim muticoolers and manicoolers with the bronze end caps need zincs due to the dissimilar metals. If you actually look at the way they work you will see there is no need for zincs.
The bronze end caps seal to both the aluminum casing and the bronze tube stack separating the two. The raw water flow through the coolers only touches the bronze components. Never the aluminum unless there is an O-ring failure in which case you are going to have other issues.
The coolant, engine oil, reverse gear oil and charge air in the case of a turbo are on the side of the cooler where there is both the aluminum and bronze present. These fluids do not act as an electrolyte therefore no protection is needed.
There are 1/4 inch drain plugs on the end caps of both the mani and multi coolers and I think some fit them with zincs but in my opinion they are not needed.
I think many think the aluminim muticoolers and manicoolers with the bronze end caps need zincs due to the dissimilar metals. If you actually look at the way they work you will see there is no need for zincs.
The bronze end caps seal to both the aluminum casing and the bronze tube stack separating the two. The raw water flow through the coolers only touches the bronze components. Never the aluminum unless there is an O-ring failure in which case you are going to have other issues.
The coolant, engine oil, reverse gear oil and charge air in the case of a turbo are on the side of the cooler where there is both the aluminum and bronze present. These fluids do not act as an electrolyte therefore no protection is needed.
There are 1/4 inch drain plugs on the end caps of both the mani and multi coolers and I think some fit them with zincs but in my opinion they are not needed.
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DensPT35
Member
Perkins engine zincs
As to zincs in a Perkins 6.354 engine, I've looked at all the logical places then had a diesel mechanic look it over and he couldn't find any. Mine is a Turbo 6.354 and my boat is a 1984 and runs great. 2 large shaft anodes, trim tabs and rudder zinced and 2 whole grounding units on the transom.
As to zincs in a Perkins 6.354 engine, I've looked at all the logical places then had a diesel mechanic look it over and he couldn't find any. Mine is a Turbo 6.354 and my boat is a 1984 and runs great. 2 large shaft anodes, trim tabs and rudder zinced and 2 whole grounding units on the transom.
STB
Guru
The engine, itself, isn't zinced. The coolers often have zincs, depending upon what they are made from. Manicoolers, multicoolers, and intercoolers are often not zinc'ed. Traditional heat exchangers often do have zincs. Trans+Oil coolers are probably more likely to have zincs than not.
The only way to know is to go looking or to find out who made the cooler and find some documentation or ask them.
The only way to know is to go looking or to find out who made the cooler and find some documentation or ask them.
Coalman
Veteran Member
Fantastic everyone, really appreciate your advice! I know I have one pencil zinc (will include a photo of it and location) on our engine, located on upper rear, port side of engine. Also the previous owner kept a baggie of pencil zincs onboard so there must be some, perhaps on Onan generator.
Coalman
Coalman
