OK ... Teaser time ... actually a serious question.

[Refueler]

Take two engines. Both raw water cooled. Boats are now out of water and need Anti freeze through them.

1. Perkins 4-107
2. Yanmar 2GM20

I can supply water via hose if necessary - but am considering whether a 20lt drum with tap at bottom is enough to feed water into raw intake - to get engine warm and then change to Antifreeze. Then once done - drain blocks via the drain taps.
I will not be circulating as I exit water via transom exhaust ....

My thoughts are 20lt would not be enough.

OK ... second idea is to modify the Rydlime idea ... instead of Rydlime - to have container of Antifreeze with controlled flow into raw intake ... collect at exhaust and a bilge pump putting it back into first container .... circulate for reasonable time till fluid is near hot.

Collection from exhaust is easy enough ... a standard domestic large bore pipe propped so exhaust discharges into it ... other end in a bin. This allows gas to vent while fluid is fired into the pipe.

 

[Mudisox]

looks good to me

 

[Refueler]

looks good to me

Which would you go for ?

I must admit I am thinking to just use the hose on slow rate .... but the two above are definitely on the consider card.

Whatever I do - I need to collect the antifreeze, not let it just blow all over the concrete and into the drain. So the pipe and bin would be there.

 

[B27]

I wouldn't consider it acceptable to exhaust anti freeze into the river.

If you want to circulate stuff, why not rig a hose into the mixing elbow to cool the exhaust, and recirculate the antifreeze before it enters the exhaust? You could even leave it full as a closed circuit over the winter?

How much water stays in your engines if you just drain them?

 

[PaulRainbow]

I wouldn't consider it acceptable to exhaust anti freeze into the river.

If you want to circulate stuff, why not rig a hose into the mixing elbow to cool the exhaust, and recirculate the antifreeze before it enters the exhaust? You could even leave it full as a closed circuit over the winter?

How much water stays in your engines if you just drain them?

Who said anti freeze would go in the river ?

For one thing, the boats are on the hard, for another, the OP said "Whatever I do - I need to collect the antifreeze, not let it just blow all over the concrete and into the drain."

 

[PaulRainbow]

Take two engines. Both raw water cooled. Boats are now out of water and need Anti freeze through them.

1. Perkins 4-107
2. Yanmar 2GM20

I can supply water via hose if necessary - but am considering whether a 20lt drum with tap at bottom is enough to feed water into raw intake - to get engine warm and then change to Antifreeze. Then once done - drain blocks via the drain taps.
I will not be circulating as I exit water via transom exhaust ....

My thoughts are 20lt would not be enough.

OK ... second idea is to modify the Rydlime idea ... instead of Rydlime - to have container of Antifreeze with controlled flow into raw intake ... collect at exhaust and a bilge pump putting it back into first container .... circulate for reasonable time till fluid is near hot.

Collection from exhaust is easy enough ... a standard domestic large bore pipe propped so exhaust discharges into it ... other end in a bin. This allows gas to vent while fluid is fired into the pipe.

I don't think 20lt will be enough, i would go for option 2.

 

[Refueler]

I don't think 20lt will be enough, i would go for option 2.

That's my thought .....

Was chatting with a guy other day and he reckoned he only used 20lt .... but for me - it doesn't sound enough - even with very slow rate .... which then risks damage to impellor.

 

[Sandy]

Can you not drain and then blow through with compressed air?

 

[Refueler]

I wouldn't consider it acceptable to exhaust anti freeze into the river.

If you want to circulate stuff, why not rig a hose into the mixing elbow to cool the exhaust, and recirculate the antifreeze before it enters the exhaust? You could even leave it full as a closed circuit over the winter?

How much water stays in your engines if you just drain them?

As Paul correctly said - I am not allowing it into the river.

Many will have realised by now that I am trying to sort a way of doing this without need to try disturb hoses / fittings that example my Perkins has had undisturbed for many years ,.....
I accept that someone will say - arrrr but chance to descale hoses ... and my answer is : I run my engines colder than spec to precisely reduce all that ...

Hopefully after my meeting with Town Mayor - to give him stick about his Tree Commission refusing my trimming of trees - one of which few days ago - then fell and only just missed the house ....

That main trunk is about 1m diameter ... this is no small tree .. its a Horse Chestnut and OLD .....

Anyway hopefully weather will be ok to have a go at the boats ... probably vent my frustration on them !!

 

[Refueler]

Can you not drain and then blow through with compressed air?

Be more hassle to organise than water ....

 

[johnalison]

A friend of mine reckoned that you could check the cooling system by his fuel of fifteen. The exhaust should fill half a bucket in fifteen seconds at fifteen hundred RPM. So, if half a 2-gallon bucket is, say, five litres, that should give twenty litres per minute, for our Volvo 2030s. I have absolutely no idea if this is correct.

 

[James_Calvert]

I have a very simple approach. I hang a bucket over the side of the boat with a syphon tube stuck into the skin fitting for the raw water intake. I keep the bucket topped up with water whilst the engine is reaching operating temperature, then tip an antifreeze mix for the last couple of minutes or so.

I mainly use a hose for topping up, running just fast enough to keep pace with the engine. But one year the yard tap was about 100m away or so and I thought I'd use some 5 gal water containers I had. I used both and had refilled one before the engine was ready to take the antifreeze. Bit of a dash to the tap...

Next time I joined every hose I could find to reach the tap.

So, 21 litres not enough in my view.

 

[Boathook]

As Paul correctly said - I am not allowing it into the river.

Many will have realised by now that I am trying to sort a way of doing this without need to try disturb hoses / fittings that example my Perkins has had undisturbed for many years ,.....
I accept that someone will say - arrrr but chance to descale hoses ... and my answer is : I run my engines colder than spec to precisely reduce all that ...

Hopefully after my meeting with Town Mayor - to give him stick about his Tree Commission refusing my trimming of trees - one of which few days ago - then fell and only just missed the house ....

That main trunk is about 1m diameter ... this is no small tree .. its a Horse Chestnut and OLD .....

Anyway hopefully weather will be ok to have a go at the boats ... probably vent my frustration on them !!

firewood for next winter.

 

[Refueler]

firewood for next winter.

To add to the 15 tons I already have ...

I have a 16kw glass fronted wood fire in the kitchen that heats air box over it - the hot air is then via fan blown to the second floor. Ground floor - the heat from that fire spreads out despite the large rooms ... and if really cold - gas system cuts in.

Met Mayor today - he called Boss of Dept and told him to sort it ... they visit tomorrow to agree more tree topping / crowning. And of course my removal of the half trunk tree left dangerously standing.