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Old 24 November 2004, 14:39   #1
Country: UK - England
Town: Hemel Hempstead
Make: Scorpion
Length: 8.1
Engine: inbord diesel 300hp
Join Date: Oct 2002
Posts: 25

Does anybody know where to get the zinc rod that goes into a Yanmar engine anode???
Buying a set of these for 80 and replacing the ones on the leg as well gets expensive.
Has anyone else found these dissolve very quickly when the boat is moored up, I keep it in the Hamble or Island harbour I.O.W and already replaced one set this year and now need a another. Can any help!!!

Sharky is offline   Reply With Quote
Old 24 November 2004, 15:08   #2
Country: UK - England
Town: Paignton, Devon
Make: Chinook and Viking
Length: 7m +
Engine: 150 Etec + 125 Merc
Join Date: Jul 2003
Posts: 526
I assume your engine is attached to Mercruiser drive? If so make sure it has a Mercathode unit (It replaces the anode where the Power trim pipes split to the rams). Make sure it is working correctly. There is a test that any Mercruiser centre can do for this. Also make sure there aren't any other irregularities in the wiring that could cause the engine/drive to be permenantly live which will cause anodes to corrode very quickly.

How bad are they whan you replace them? We only replace anodes that are over 1/2 corroded.

The bloke anodes do tend to errode quicker then the ones on the drive (I think because they use a brass nut to hold the anode in the Aluminium block).

Brixham BSAC
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Old 24 November 2004, 16:49   #3
Country: UK - England
Town: Plymouth
Boat name: 2XS
Make: Halmatic Pacific 24
Length: 7m +
Engine: 135hp Honda X2
Join Date: Jan 2004
Posts: 521
Hi Sharkey
I have a customer that i have changed his anodes 4 times this year alone, he has twin Volvo duo prop outdrives, stainless props, on permant shore power with the cable dangling in the water and backed up to a pontoon post, all these contrubute to erroding anodes, Oh and what are the anodes like on the boats around yours as this does not help either.
Ian A
Ian Austin is offline   Reply With Quote
Old 22 December 2004, 10:40   #4
Country: UK - Wales
Town: Barmouth
Boat name: Blue Marlin
Make: Ribcraft
Length: 7m +
Engine: Yanmar 315/Bravo 2X
MMSI: 235020218
Join Date: Jun 2003
Posts: 827
No 341 in a series of daft questions...

On a marina based boat (so in the water 100% of the time), but not used as often as I would have liked (42 hours in the last 4 months ) - would you expect the anodes on the drive to corrode quicker, slower, or in about the same time as the engine anodes?

My outdrive anodes definately need replacing - but the whole lot is due for a service in 8 hours - although I don't know how long it will take me to get to the 50 hr mark.

Also - is changing the engine anodes difficult, or is it just one out and one in?

And finally, referring to the first post - is there an alternative source of anodes? 192.16 every 4 months is going to add up.........

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Old 22 December 2004, 11:58   #5
Country: UK - England
Town: Southampton
Boat name: TBA
Make: TBA
Length: no boat
Engine: TBA
Join Date: Sep 2004
Posts: 8
Try Keypart, seem to remember seeing some at the London Boat Show.

whitewater is offline   Reply With Quote

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