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The Norfolk Broads Forum / Broads Boat Owners Q & A / Winterisation Advice Please
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Posted By Discussion Topic: Winterisation Advice Please

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Naxos
Nov-17-2017 @ 3:09 PM                           Permalink
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Hi. Our boat is currently moored without shore power. I was considering moving to a mooring with this facility to hook up and then use tube heaters to keep the engine from freezing. But I like my current moorings. So is it nessassary or possible to winterise the Volvo Penta and stern drive in the water and safe guard against engine freeze damage?  Also any recommendations for any person  with the expertise that could do this for me? I am a newbie to boating so any advice is welcome   Thanks Paul   Cheers

Cheers - Paul

Paladine
Nov-17-2017 @ 4:35 PM                           Permalink
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If you don't intend to use your boat during the winter, then winterising is advisable. Check to make sure your landlord allows off-site engineers to come in to do work on your boat (some boatyards don't).

Two I would recommend are:

Mark Platten

and

Toby Cox

(click on the links for contact details)

"..for the avoidance of any doubt, the broads are not legally a national park and do not come under the national park legislation, and nor will they."
Parliamentary Under-Secretary of State for DEFRA (Hansard 2015)

Naxos
Nov-17-2017 @ 7:38 PM                           Permalink
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Hi. That’s fantastic. I will contact these marine engineers next week. In regards to my using the boat over the winter months - I would like to but I guess it’s a balance with do I or don’t I in regards to winterising the Engine. I will speak with the experts you have provided and work it from there. Thank you. ??

Cheers - Paul

annville
Nov-18-2017 @ 12:31 PM                           Permalink
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Hi Paul to winterise outdrives turn off sea cock remove the cap and strainer get a gall of 20% antifreeze mixture start engine on tick over pour mixture into strainer while holding a bucket/container under the leg to catch the flushed water, when mixture used up STOP engine immediately replace strainer and cap leave cock turned of, then place a note on ignition that water cock is shut/closed.Heaters wont stop leg from freezing as its outside.What happens to heaters if power supply is removed/trips off and you are not there??.Oh and check that the coolant mixture in engine/heat exchanger is up to strength ie 50% antifreeze.and don't forget to flush toilet with antifreeze as well.John

Cocklegat
Nov-18-2017 @ 12:42 PM                           Permalink
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and remember to only use safe non-toxic marine engine antifreeze that contains propylene glycol.

annville
Nov-18-2017 @ 3:41 PM                           Permalink
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Propylene antifreeze must not be used in engines, it has no anti corrosion properties its for using in freshwater systems and where it would be pumped into the water/river ie hand basins showers,bilge pumps. it contains alcohol which evaporates it is a one shot antifreeze and contains no additive unlike ordinary antifreeze which is toxic and must not be flushed/disposed of into river.John

Cocklegat
Nov-19-2017 @ 10:00 AM                           Permalink
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Don't understand that. So you are using toxic antifreeze for winterisation, but how do you remove it without flushing it into the river?

Naxos
Nov-19-2017 @ 5:37 PM                           Permalink
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Hi Jon.thanks for the reply. I sort of understand the procedure but not so sure with the flushing out section. My boat will remain in the water so how would I drain from the leg or have I got this wrong. I contacted one of the recommended engineers as in previous thread and he quoted £85 which seems reasonable as quoted £150 elsewhere. I’m very green when it comes to these things as I am a new boat owner so some of the technical terms are a mystery to me at present.

Cheers - Paul

annville
Nov-19-2017 @ 6:37 PM                           Permalink
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Hi Paul If the boat is still in the water lift the leg up on the tilt switch or if not electric disconnect the reverse latch and lift the leg up out of the water so you can get a bucket under it. if unable to do this buy the more expensive poly antifreeze which doesn't have the anti corrosion additives and drain/flush as i said before. does your engine have a heat exchanger? this is a header tank that is on top of front of engine with a car type radiator cap in centra this is separated from cooling water and must have ordinary/car antifreeze at a 50/50% mixture  or is it sea/river water cooled, if river water cooled and you can't lift the leg although more environmentally if you can prevent antifreeze from entering river, flush as before then drain the engine block by undoing drain tap on the side of engine  block.John

Dilligaf
Nov-19-2017 @ 7:01 PM                           Permalink
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I have twin VP tmd41a's on shafts and so far I have not had any problems with a good 50:50 mix of freezeban (fish friendly) down the weed filter when you leave the boat, run the engines briefly with the sea cocks off and weed filter lid off till it is empty and shut down, then (as long as your weed filters are above water level) open the seacock to let some water out of the pipe and add an extra splash of freezeban to the weed filter to cover the inlet hose(you can do this as soon as take the weed filter lid off), put the lid back on and job done, this assumes the closed system has good antifreeze in which it should have all season anyway.
Next time you want to run the boat open the weed filter and fill with water to make sure it it primes up or you could run the impellor dry(been there & done that on my port engine, the slightest air leak will do this and burn the inside of the exhaust hose), I have some floating plastic balls in my weed filters so it's easy to see if there is flow through them.
Freezeban is cheaper than regular anti-freeze and non toxic and makes it easier to use the boat during winter, my winterising normally takes only 5 mins to do two engines and the bog and not yet had any issues.
Obviously if a big freeze is forecast do a much bigger job as VP parts are hand crafted from virgin mermaids ovaries and priced accordingly.
Remember the river water rarely drops below freezing and if south has enough other crud to prevent freezing in the leg.

Dave.
Formerly 'LeoMagill'


This message was edited by Dilligaf on Nov-19-17 @ 7:03 PM


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