Welcome to Carver Yachts Owners Forum

We are a boating forum for owners of Carver Yachts to enthusiastically discuss all aspects of Carver Boat ownership. Whether you are looking for your first Carver or currently own one, you are sure to feel at home on CarverYachtOwners.com

You are currently viewing our board as a guest which gives you limited access to view most discussions, articles and access our other FREE features. By joining our free community you will have access to searching the forum topics, post topics, communicate privately with other members (PM), respond to polls, upload your own photos and access many other special features. Registration is fast, simple and absolutely free so please, join our community today!

winterizing closed-loop system

GAS engine, transmission and generator repair and maintenance discussion forum.
User avatar

Topic author United States of America
Scienceguy
Scurvy Dog
Scurvy Dog
Posts: 17
Joined: July 10th, 2016, 4:20 pm
Vessel Info: 2000 Carver 406 aft cabin
Location: Clayton, NY 1,000 Islands
Been thanked: 2 times

winterizing closed-loop system

Postby Scienceguy » September 19th, 2016, 4:44 pm

Hi All,


I've never winterized an inboard. So I need some affirmation.

This is a closed - loop system, so besides the heater hoses on the port engine, what else is there after you blow it out thoroughly with anti-freeze? I can't see where else there could be water. Am I correct on this?

I appreciate your thoughts.

User avatar

United States of America
mjk1040
Admiral
Admiral
Posts: 1506
Joined: July 30th, 2015, 8:15 am
Vessel Info: 1998 355 AC/MY "Deja Vu"
Location: Savannah, NY
Has thanked: 9 times
Been thanked: 236 times

Re: winterizing closed-loop system

Postby mjk1040 » September 19th, 2016, 5:55 pm

Well you should drain your exhaust manifolds, heat exchangers, oil coolers, fresh water pump and mufflers. Then I would suggest filling them with -50 RV antifreeze by hooking the fresh water pump up to a 5 gallon can of RV antifreeze and running the engine until u have pink antifreeze coming out the exhaust. Check your manual or go on the Carver site and look up your manual. Just in case I missed something. Mike
Mike :down:
I'd Rather Be Boating!
1989 Sea Ray Seville
1986 Carver Mariner 32'
1990's Thompson 22' Cuddy Cabin
1990's 4Winns 245 Vista Cruiser
1980's Thompson 19' Open Bow
User avatar

Topic author United States of America
Scienceguy
Scurvy Dog
Scurvy Dog
Posts: 17
Joined: July 10th, 2016, 4:20 pm
Vessel Info: 2000 Carver 406 aft cabin
Location: Clayton, NY 1,000 Islands
Been thanked: 2 times

Re: winterizing closed-loop system

Postby Scienceguy » September 19th, 2016, 7:43 pm

Hi Mike,

Why do you have to drain when you're using anti-freeze to push everything out?

United States of America
tomschauer
CYO Supporter
CYO Supporter
Posts: 2290
Joined: March 28th, 2016, 10:52 pm
Vessel Info: 1998 Carver 355
Suspicious Fishes !
2022 Kawasaki 310X
Location: upper chesapeake bay
Has thanked: 313 times
Been thanked: 581 times

Re: winterizing closed-loop system

Postby tomschauer » September 19th, 2016, 8:08 pm

You don't have to drain, but if you don't you will need to use more anti freeze as it will not just "push" the water out, it will mix with the water and dilute the antifreeze. You then need to run a few more gallons through to make certain you have sufficient protection.

Canada
Viper
CYO Supporter
CYO Supporter
Posts: 5799
Joined: July 10th, 2015, 9:58 pm
Vessel Info: 1989 Carver 3807 Aft Cabin
Location: Ontario, Canada
Has thanked: 431 times
Been thanked: 1586 times

Re: winterizing closed-loop system

Postby Viper » September 19th, 2016, 11:18 pm

If the manifolds are raw water cooled, drain them first. If you have mufflers that are not self draining, drain those as well. I do not recommend pumping antifreeze without draining the water first, not worth the risk IMO.
User avatar

Topic author United States of America
Scienceguy
Scurvy Dog
Scurvy Dog
Posts: 17
Joined: July 10th, 2016, 4:20 pm
Vessel Info: 2000 Carver 406 aft cabin
Location: Clayton, NY 1,000 Islands
Been thanked: 2 times

Re: winterizing closed-loop system

Postby Scienceguy » September 20th, 2016, 7:25 pm

OK.

Thanks guys!!

Return to “Gas Engines/Transmissions”



Who is online

Users browsing this forum: No registered users and 41 guests