Kad32 winterise in water

Q

QBhoy

Well-Known Member
Joined
11 Mar 2016
Messages
2,620
Visit site
Just a quick one guys. An engine I’ve never worked on. Don’t have the manual to hand.
I know where and how to drain the raw water side...but to run antifreeze through it, is the only method by means of getting it into the suction side of the pump ? I haven’t looked at the engine for any longer than 5 mins to be honest, but presuming pouring it into the sea strainer is not going to work, given what side of the pump it’s on, haha.
This is an outdrive.
thanks guys.
 
I’ll pick up any replies in the morning guys, should there be any. Just in case you think I’m being rude, not replying this evening.
Thanks in advance.
 
To run anti-freeze through the raw water side I used to remove the end of the inlet hose from the pump and attach a hose going into the container containing the coolant before running the engine to pull it through.
 
We had more severe frost in November than since. Presently have a tube heater in engine bay with thermostat set to cut in at 5 degrees. It must have cut in in November as suggested by electricity consumed and judging by very small electricity consumption the heater may have cut in very occasionally in recent weeks.
 
Most antifreeze is toxic and allowing any of it to go into the sea on the raw water side is just appaling...
 
We had twin kad 42 very similar to yours, we were on shafts and all I did was turn off the water inlet sea cock ,take the top off the water strainer,
our strainer was very thin and all I did was bung the pipe from our vacuum cleaner into the top of the strainer and mix a black builders bucket up with 50/50 blue antifreeze and pop the other end of the tube in the bucket and run the engine till it’s all gone. I know it’s the correct amount because one year I had to remove the exhaust silencers they were full of antifreeze , alternatively you could just pour the antifreeze mix straight into the top of the water strainers just don’t forget to turn off the seacock ,
 
Rappey said:
Do you really nedd to wnterise when afloat? Im sure the warmth of the sea helps a lot
Click to expand...
I guess that depends where the boat is located .
eg in Sweden it gets very cold.
In Nottinghamshire (where my boat is) a frost protection heater seems good enough and some people do nothing .
 
MartynG said:
We had more severe frost in November than since. Presently have a tube heater in engine bay with thermostat set to cut in at 5 degrees. It must have cut in in November as suggested by electricity consumed and judging by very small electricity consumption the heater may have cut in very occasionally in recent weeks.
Click to expand...
Thanks for this. Unfortunately not an option, where the boat is moored.
 
Greg2 said:
To run anti-freeze through the raw water side I used to remove the end of the inlet hose from the pump and attach a hose going into the container containing the coolant before running the engine to pull it through.
Click to expand...
Thanks Greg. Appreciated
 
simonfraser said:
i made one of these out of bits on ebay etc
makes the job dead simple
remove the inlet to the pump and slide it on, other side in a bucket
Click to expand...
Thanks so much Simon. Very handy looking that. So will this go onto the inlet to the pump (bottom pipe) ? I worry that by taking that off, it may allow water to get in from outside the hull. I think it’s touch and go if that level is at the level of the waterline outside. May be able to hold it up higher than the water line perhaps, once off.
 
QBhoy said:
Thanks so much Simon. Very handy looking that. So will this go onto the inlet to the pump (bottom pipe) ? I worry that by taking that off, it may allow water to get in from outside the hull. I think it’s touch and go if that level is at the level of the waterline outside. May be able to hold it up higher than the water line perhaps, once off.
Click to expand...

yes slide it onto the inlet of the pump, you can see my old leaking pump in the image i posted

if you need to hold the normal inlet up you'd better rig up a system to hold it :)

as said if the boat is in the water the risk is less, last winter the coldest it got outside my boat on a trailer was -4C and the minor bit of fresh water (from emptying the tanks) in the bilge had not frozen in the morning
 
Since salt is put down to stop ice I wondered if salt water also freezes at zero.
After a little reading and some possibly useless but interesting information,
One litre of salt water contains around 35g of salt (about 6 teaspoons)
The freezing point is below zero but does depend on salinity.
One litre of water with 200g of salt will start to freeze at -6.5c
 
Rappey said:
Since salt is put down to stop ice I wondered if salt water also freezes at zero.
After a little reading and some possibly useless but interesting information,
One litre of salt water contains around 35g of salt (about 6 teaspoons)
The freezing point is below zero but does depend on salinity.
One litre of water with 200g of salt will start to freeze at -6.5c
Click to expand...
Agree with your finding there. For certain, salt water has a lower freezing temp. Alas, this is fresh water. She is in now in a fast flowing river though. Always helps. She wasn’t yesterday. Drained down the cooler today, at least.
 
You must log in or register to reply here.

Share this page

Top