Wow all my years in Ottawa I don't think I used 5 gal. I did run some
through probably about a gallon. Then I would go and
drain the engine through the frost plugs as per Yanmar recommendation.
I figured anything left in the engine would have enough
antifreeze to keep it soft enough. 11 years with my C&C 30 and 5 years
with my bayfield...no issues...and Ottawa can be cold
to -40 or so...
Cheers,
Jeff
On 10/22/2015 11:48 PM, Marek Dziedzic via CnC-List wrote:
Rob,
You may not have overly low temperatures in Halifax, but 2 gal of AF
would not be enough here (in Ottawa). Have you ever checked the actual
concentration of AF that is _/leaving/_ the exhaust? I use about 5 gal
(20 l - 25 l). The extra $3.50 is a cheap insurance for not busting
(bursting) the heat exchanger or the muffler.
Some interesting tests at Compass Marine:
http://www.pbase.com/mainecruising/engine_freeze_protection .
Marek
1994 C270 “Legato”
Ottawa, ON
*From:*CnC-List [mailto:cnc-list-boun...@cnc-list.com] *On Behalf Of
*robert via CnC-List
*Sent:* October-22-15 21:19
*To:* cnc-list@cnc-list.com
*Cc:* robert
*Subject:* Stus-List Hydrolocked!
Chuck / Dave:
Chuck, I am with you....I don't understand how a few cups of
antifreeze would get to the engine this way.
Dave, I do something similar to winterize the engine, but no exactly
the same. While on the hard, I fill a 5 gallon bucket in the cockpit
with a fresh water garden hose keeping it filled and over flowing if
it happens....I run a hose from the bucket to the raw water pump
(remove the raw water hose to the pump, of course)......start the
engine to flush the salt water and warm up the engine....shut the
engine down......empty the bucket of fresh water.....put a gallon of
concentrated antifreeze plus one gallon of fresh water in the
bucket....restart the engine until I see the antifreeze exiting the
exhaust thruhull....system full of antifreeze......shut down the
engine.....my Yanmar 2GMF engine and exhaust system takes about the 2
gallons .....always a little left which I put in the head.
Are you absolutely sure you have a hydrolock? As mentioned by a
lister, first check your impeller in the raw water pump......if it is
fine and all intact, I don't know how you could have a hydrolock but
I am no marine engine mechanic.
Rob Abbott
AZURA
C&C 32 - 84
Halifax, N.S.
On 2015-10-22 8:55 PM, Chuck S via CnC-List wrote:
Dave,
I'm surprised a few cups of antifreeze would get to the engine by
the way you describe. The point where the raw water shoots into
the exhaust should be angled to enter the exhaust and not the
engine. Before it backs up into the engine, your hose from
cockpit to engine, raw water strainer, the heat exchanger, exhaust
hose and muffler needs to fill first, before it can back into the
engine. That's a lot of water to move. Also, remember if the
engine was stopped, the exhaust valve is closed on 3 of the 4
cylinders, so the intrusion is limited. Starting the thing might
blow it all out?
If I remember right, I can open a water hose under pressure to my
raw water pump but it doesn't pass through the impeller until I
start the engine turning. I suspect your pump impeller may be
worn and need replacement?
I'm hoping it is not hydolocked, but not starting for some other
reason probably electrical, key off, switch off, batteries turned
off. Did you hear the solenoid click? Did the starter whine or
hum at all?
Chuck
Resolute
1990 C&C 34R
Broad Creek, Magothy River, Md
------------------------------------------------------------------------
*From: *"David Pulaski via CnC-List" <cnc-list@cnc-list.com>
<mailto:cnc-list@cnc-list.com>
*To: *cnc-list@cnc-list.com <mailto:cnc-list@cnc-list.com>
*Cc: *"David Pulaski" <davepula...@hotmail.com>
<mailto:davepula...@hotmail.com>
*Sent: *Thursday, October 22, 2015 3:47:46 AM
*Subject: *Stus-List Hydrolocked!
Thanks all for the words of advice! I'm going to be a wreck until
Sunday when I can get there to try to resolve this situation.
So here's how I managed to do this:
I was attempting to winterize the engine, boat still in the
water. First I just ran the engine normally for a while, maybe
30-45 minutes, while I got everything ready. After I shut it down
and closed the raw water intake seacock, here was my winterizing
plan: 5 gallon bucket sitting on the cockpit sole, filled with
pink antifreeze. A length of hose running through the opening
port in the aft cabin from the cockpit to the engine compartment,
connected to the raw water side of the water strainer. Seemed
simple enough: I could start the engine and watch the level in the
bucket, adding more if necessary.
My big mistake was attempting to prime the hose with antifreeze.
I was just using a small cup to pour some antifreeze into the hose
from the end up in the cockpit; no pressure. It didn't occur to
me that the small height differential would be enough to push
water past the raw water pump into the cylinders, but apparently
it did. I didn't realize what had happened until I attempted to
start the engine, and it wouldn't turn over. At first I thought
the batteries didn't have enough juice to restart after my cold
startup a few moments earlier. I stabbed the button a couple of
times, and then it dawned on me.
I went back down below and disconnected the exhaust hose from the
manifold riser, and sure enough, pink poured out. Perhaps I'm
having a stupid moment but I'm really still scratching my head
over this. I really didn't pour much down the hose, just a couple
of cups. But I'm actually somewhat hopeful that the contents of
the cylinders is mostly antifreeze - should give some corrosion
protection I'm hoping.
Until sunday...
-Dave
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--
Boat_Sig Cheers,
Jeff Nelson
Muir Caileag
C&C 30
Armdale Y.C.
Halifax
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