Author Topic: Boat Winterization  (Read 32982 times)

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Offline Joel

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Boat Winterization
« on: September 13, 2010, 09:30:15 PM »
Can anyone walk me through a standard winterization of an inboard boat, including all the engine petcocks, plugs, etc, that need to be drained prior to the first big freeze???  I think I missed draining the heater lines last year which resulted in a busted heater core...   live & learn.

Any guidance, assistance, experience, direction, or just plain ole help would be greatly appreciated  :)
Joel - Columbus, OH - 1991 Advance

Offline John Doerfler

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Re: Boat Winterization
« Reply #1 on: September 14, 2010, 07:04:31 AM »
Joel,
     I always get a 5 gallon bucket full of radiator fluid and place the intake hose in the bucket, start the engine, and suck the whole bucket dry.  Then Change the engine oil and filter. Change the fuel water separator filter. Grease trailer bearings. Remove battery and place it on a battery tender all winter. And lastly buff, wax, and cover boat.
John Kyle Doerfler

Offline chrisheile

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Re: Boat Winterization
« Reply #2 on: September 14, 2010, 07:48:34 AM »
I seem to recall that it is best to get the engine up to operating temperature prior to using the fake-a-lake so that the thermostat is wide open?  I disconnect the heater hoses and blow them out first so that they are completely empty before getting anti-freeze.  For those of you with newer boats, do not forget to disconnect the speedo tubing from the Medallion MDC.  I made that $400 mistake once!!
2002 American Sker Pro

Offline Midskier

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Re: Boat Winterization
« Reply #3 on: September 14, 2010, 10:56:24 AM »
I thought for sure I had posted this in this forum last season(?) I can't find it

sucking antifreeze out of a bucket is almost right- I use Propylene glycol AUTOMOTIVE Antifreeze , NOT the pink RV stuff , Sierra / Low Tox
find it @ Tractor Supply , Ace can order it

hopefully you added fuel stabilizer to your fuel on your last outing, if not do it now
I prefer stabilized fuel and as little of it as possible left in the tank, 1/2 tank is least desirable, Full tank is ok , but you end up with a full tank of stale gas
in the spring, so burn it off wakeboarding, not barefooting. Stabil is the crowd favorite, but lately I've really come to like "Sea Foam" it's in a metal 1 pint can
(good stuff)

I like to pull the intake hose off @ the trans oil cooler input side then I can clean the debris out of it (mostly for those without sea water strainers)
(I have a 3-4' length of hose and attach it to the cooler and place the other end in my bucket)

before you run it on your bucket of antifreeze run it on fresh water to get it to temp, position the trailer so the water goes away from the boat
not under the boat.

get it up to operating temperature so she starts back up right away and idles smoothly

have all your other supplies ready too, spray fogging oil for carbed engines and TBI , multi port port motors are DRY intake and need to stay DRY
so do not fog your MPI

Drain the water from the block and exhaust manifolds, manifold cooling hoses, water pump hoses etc
the less water in the engine and surrounding hoses the less your solution will be diluted

re secure the drain plugs / hoses etc (EFI carefully remove knock sensor, drain , re-install)

some of us like to remove the t-stat - when removed it allows a more direct path to the engine for the antifreeze,
(the housing does have a small bypass hole, so this is not manditory)
without the t-stat installed there's a much bigger path.  otherwise most of the solution will go right to the exhaust manifolds.

remove the spark arrestor

fill your bucket with antifreeze solution good for your area ( mine will be good for @ least -20), usually 4-5 gallons

fire it up and let her suck it down (another reason Fake a lakes suck)

with about a gallon left start spraying your fogging oil down her throat choke it out just as the last of the antifreeze gets sucked down

what's left?  put it all back together , did you change your oil yet?  I might have done that while the water was draining from the block
but be careful you want water out the transom drain , oil drain hose out the center drain (garbard drain if Ron is reading)

if your engine is @ temp your oil will flow freely, if not it takes FOREVER. (and now you know why you want it dry under the boat :)

fresh oil and filter in the fall not the spring,  double check the level before you clean up

fix anything else that may be broken or worn out do it now b4 you put it away for the winter.

cap, rotor , wires, & plugs (?)

grease rudder shaft

remove the battery from the boat, put it somewhere that will be above freezing and NOT directly on Concrete

trailer maintenance

CLEAN THE BOAT wax it, get the carpet dry, ETC ETC ETC   

Did you reinstall your T-Stat?  (I use a perma-seal gasket RTV instead of a new gasket)


Electronic gauge owners carefully take the little hoses off @ the MDC to drain any water that may be there, if not you'll be calling me in June       


about the only thing required to do in the spring is reinstall your freshly charged battery
insert transom and center / garbard drain plugs
and top off the tank with fresh fuel, everything else should have been put back together b4 winter..........


that about covers most of it

good luck or bring it over

Dan T

 
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Offline Mike Harry

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Re: Boat Winterization
« Reply #4 on: September 14, 2010, 11:25:39 AM »
Stupid question here. I never see the 40's much less below... do I need to winterize?

Ill probly put her in the lake just to ride around once or twice a month till it gets hot again.

Just curious. I dont plan on doing the gas stuff, cause I plan on running it out, or running it monthly. I was wondering about all the block stuff and antifreeze though.

Offline RonT

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Re: Boat Winterization
« Reply #5 on: September 14, 2010, 02:22:34 PM »
Simple answer is No, that said here in the South we still get cold snaps that can damage an engine. Areas that see high 20's at night & warm to 40's in the day have little to worry about. The 24hr+ below freezing is when damage begins, MDC's on newer boats, heater cores & showers are the first to go. An Iron engine block takes a while for the remaining heat to be absorbed. There are 2 things southern skiers do to get through, A) leave the boat in the water absorbing heat from the lake (covered of course) or B) place a 100W Conventional light bulb under the oil pan & cover back up. For those who didn't ask its 91 here today.

Offline John Doerfler

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Re: Boat Winterization
« Reply #6 on: September 14, 2010, 05:31:13 PM »
Great advice Ron!
John Kyle Doerfler

Offline Midskier

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Re: Boat Winterization
« Reply #7 on: September 16, 2010, 11:22:21 AM »
it's only 71 here today :(

up here in the north we winterize our boats generally b4 Thanksgiving , usually a lot sooner
when does rust grow best on cast iron?  when it's wet with water or dry?
with our season so short and 6-7 months in storage anti-freeze in block not only
protects again freezing ,,,,,,, but also includes rust inhibitors, and that's why I keep my winterized
engines "wet" the anitfreeze stays in the block and all the plugs are re-installed
Florida boys can get away with a light bulb when the concern is near

it was 47 labor day morning...... we still skied :)

Dan T
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Offline Joel

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Re: Boat Winterization
« Reply #8 on: September 16, 2010, 01:07:30 PM »
47 degrees!!!   Your an ANIMAL!!!!    ;D   My brother skies competitively and he has some pics of his younger years in a dry suit coming around a buoy with snow flakes in the air...  I dont think he's THAT dedicated anymore   8)
Joel - Columbus, OH - 1991 Advance

Offline Midskier

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Re: Boat Winterization
« Reply #9 on: September 16, 2011, 02:57:49 PM »
bump (so I don't have to write it again  ;) )

Dan T
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Roger

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Re: Boat Winterization
« Reply #10 on: September 17, 2011, 08:33:40 PM »
The light bulb works great untill you have an ice storm and loose power for a week like we did in 2000.

Offline chrisheile

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Re: Boat Winterization
« Reply #11 on: September 20, 2011, 02:03:30 PM »
I didn't realize that I could fog TBI.  Where do I put it?
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Offline RonT

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Re: Boat Winterization
« Reply #12 on: September 21, 2011, 07:21:42 AM »
SLOWLY pour down both Throttle bores alternating side to side while engine is idling, as soon as engine begins to run rough & spew smoke your done, I prefer to use 2 stroke oils.

Offline chrisheile

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Re: Boat Winterization
« Reply #13 on: September 21, 2011, 02:45:37 PM »
Thanks.  I have done it with a carb before.  Didn't think I could do it with TBI.  I will take a look
2002 American Sker Pro

Offline Midskier

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Re: Boat Winterization
« Reply #14 on: September 23, 2011, 06:59:30 AM »
TBI no problem
Direct injection / MPI - DO NOT FOG
Carb - no problem

I prefer fogging oil in a spray can - point and shoot
Midwest American Skier Boats Parts and Service
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www.MidwestAmericanSkier.com
midskier@hotmail.com
Buy Barefoot International / Fly High Products at:
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