winterising error,blew out end caps of exchanger.

[wajajaja02]

Fortunately that was all of the damage, and I was able to pick up replacements at the marina, he keeps them in stock for the alpha one.
now what did ii miss so i don't do this again. we took the hose off to allow drainage of the exchanger, but apparently not good enough.

 

[EddiePetty]

Re: winterising error,blew out end caps of exchanger.

....no clue what kinda set-up we're talking about here, but, most heat exchangers have drain plugs on the underside of the shell, several in fact. Our 4" Mercruiser has a drain **** installed in the aft-most drain plug hole to facilitate draining the sea water side.

Ed in 'ol Virginny

 

[nola mike]

Re: winterising error,blew out end caps of exchanger.

what engine? on a 470, there are 2 plugs on the exchanger--the aft plug drains the seawater section, the fore plug drains the coolant. did you pull the right plug?

 

[wajajaja02]

Re: winterising error,blew out end caps of exchanger.

the fresh water side froze, the coolant side is fine,thats the internal chamber of the exchanger. its a 170 merc with a alpha one i/o

 

[nola mike]

Re: winterising error,blew out end caps of exchanger.

then your mistake was pulling the hose instead of either pulling the endcaps or (easier) pulling the plug on the underside of the exchanger.