Winterizing with half system

BurgundyS24

Member
Oct 5, 2014
426
Napa, CA
Boat Info
Sea Ray S24. full delta enclosure. Towed by 2007 Chevy 3500 duramax/allison combo.
Engines
350 with closed fresh water cooling
When i installed my new engine i installed a new half loop closed system. So only my manifolds/risers are raw water cooled. When i decide to winterize whats my best method? Im thinking just pull the lower hoses on the manifolds but what about getting water out of heat exchanger?

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I have the same set up on a small block. I pulled the lower hose as you said and I shop vaced. The manifolds and hoses. I pulled the inlet hose off the exchanger and used the shop vac on the inlet hose. I have alpha drives, so I pulled the inlet hose at the transom and sucked any water out, this also empties the ps cooler. I poured the minus 100 AF thru the inlet hose and also they the manifolds to purge any remaining water and for the anti corrosion aspect. I filled the raw water side of the exchanger with AF also. I did that thru the zinc pencil hole.
 
Burgandy, I've never done anything to winterize here in our area. We usually don't see days and days of freezing weather like our friends elsewhere. We may see an overnight freeze but it will warm up during the day. I guess it depends where you are keeping the boat stored but even when I lived in Las Vegas all I ever did was open petcocks on the block and exhaust manifolds.

Shawn
 
Burgandy, I've never done anything to winterize here in our area. We usually don't see days and days of freezing weather like our friends elsewhere. We may see an overnight freeze but it will warm up during the day. I guess it depends where you are keeping the boat stored but even when I lived in Las Vegas all I ever did was open petcocks on the block and exhaust manifolds.

Shawn

Thanks shawn. Its trailered on the side of my father inlaws house (3 doors down). Unfortunately no petcocks on the manifolds.... i dont want to have to do anything if i dont have to. We will ise the boat throughout the winter for fishing and crabbing.

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