Reply
 
Thread Tools Search this Thread
 
Old 27 March 2012, 05:53   #1
Member
 
Country: New Zealand
Length: 3m +
Join Date: Nov 2011
Posts: 22
Flushing through motor

I have a 30hp 2 stroke and wondering if flushing through with gravity fed water from a 20L container would suffice. The motor would be on its stand and the container would probably be on top of the car linked to the ear muffs by hose pipe. This would be done straight after coming out of the sea.
__________________
rich hand is offline   Reply With Quote
Old 27 March 2012, 06:47   #2
Member
 
m chappelow's Avatar
 
Country: UK - England
Town: yorkshire
Boat name: little vicky
Make: avon ex RNLI
Length: 3m +
Engine: tohatsu
Join Date: Mar 2008
Posts: 2,310
Quote:
Originally Posted by rich hand
I have a 30hp 2 stroke and wondering if flushing through with gravity fed water from a 20L container would suffice. The motor would be on its stand and the container would probably be on top of the car linked to the ear muffs by hose pipe. This would be done straight after coming out of the sea.
Don't see why not ,Atlantic class lifeboats use a similar idea for warm up whilst on the trailer going from boat house down to the waters edge,
__________________
m chappelow is offline   Reply With Quote
Old 27 March 2012, 07:48   #3
Member
 
Country: UK - Scotland
Boat name: Wildheart
Make: Humber/Delta Seasafe
Length: 5m +
Engine: Merc 60 Clamshell
MMSI: 235068449
Join Date: Apr 2007
Posts: 4,667
I would geuess your biggest issue might be getting enough water up there to be meaninfgful, especicially as flush muffs are notorioulsly bad at sealing on the leg.....

I've never worked out how much watetr you would actually need, but having run a small jetwash form a 5 gallon container in a similar scenario I would guess more than you might want to lift up there......
__________________
9D280 is offline   Reply With Quote
Old 27 March 2012, 08:19   #4
Member
 
Erin's Avatar
 
Country: UK - Channel Islands
Town: A large rock
Boat name: La Frette
Make: Osprey Vipermax
Length: 6m +
Engine: 200 Suzzy
Join Date: May 2004
Posts: 2,893
Would a 20 litre container of the right shape not be just about big enough to sit the leg/prop into and then flush in the normal manner?
Erin is offline   Reply With Quote
Old 27 March 2012, 09:40   #5
Member
 
Country: Other
Town: Stanley, Falkland Is
Boat name: Seawolf
Make: Osprey Vipermax 5.8
Length: 5m +
Engine: Etec 150
Join Date: Mar 2006
Posts: 3,726
Bear in mind a cold tap usually chucks out 30-40L a minute, I don't think 20L is going to last long or if it does the water pump might not like it?

We have a low pressure supply at our house (about 0.5 bar / 5m head from supply tank) and I found it completely useless for muffs, its fine with the E-TEC inlet adaptor which only needs low pressure and isn't losing water, but I'd be worried about doing something unpleasant to the water pump due to lack of water actually getting to it.
__________________
A Boat is a hole in the water, surrounded by fibreglass, into which you throw money...

Sent from my Computer, using a keyboard and mouse
BogMonster is offline   Reply With Quote
Old 27 March 2012, 10:28   #6
Member
 
Country: New Zealand
Length: 3m +
Join Date: Nov 2011
Posts: 22
Many variables. I suppose the best way would be to get a small barrel with a large screw lid to stop water leaking whilst in the back of the car. I probably would have to carry the fresh water with me you see.

When flushing by way of mains tap water and hose connected to ear muffs how long is the motor best run for? The other way would be to simply test my original idea and see how much water is pump through and how long the container lasts.
__________________
rich hand is offline   Reply With Quote
Old 27 March 2012, 11:48   #7
Member
 
neil.mccrirrick's Avatar
 
Country: UK - England
Town: Oldham
Boat name: Miss Isle
Make: Solent 6.9
Length: 6m +
Engine: 225 optimax
Join Date: Jan 2008
Posts: 1,409
I run mine with double ear muffs off the tap for about 5 mins, and all has been well so far ,

While we are on this topic tho, it occurs to me, if you are moored at sea, and don't use the engine for a week or so, what risk is there in creating a build up of salt?
__________________
neil.mccrirrick is offline   Reply With Quote
Old 27 March 2012, 12:30   #8
Member
 
Country: UK - England
Town: Ipswich
Boat name: Jammy Dodger
Make: Avon Adventure 7.20
Length: 7m +
Engine: 200 Yamaha
Join Date: Dec 2008
Posts: 365
Send a message via MSN to willfinch36
Quote:
Originally Posted by m chappelow View Post
Don't see why not ,Atlantic class lifeboats use a similar idea for warm up whilst on the trailer going from boat house down to the waters edge,
Got a picture of the said idea? Would be interesting to see....
__________________
willfinch36 is offline   Reply With Quote
Old 27 March 2012, 12:49   #9
Member
 
Country: UK - Scotland
Boat name: Wildheart
Make: Humber/Delta Seasafe
Length: 5m +
Engine: Merc 60 Clamshell
MMSI: 235068449
Join Date: Apr 2007
Posts: 4,667
Quote:
Originally Posted by rich hand View Post
When flushing by way of mains tap water and hose connected to ear muffs how long is the motor best run for?
Here there be many discussions.....

Most would agree at least long enough for it to warm up & open the thermostat. Which instantly opens up a huuuuge volume of water passages inside the head that the hose might not be able to keep up with, and how do you know when that has happened?
__________________
9D280 is offline   Reply With Quote
Old 27 March 2012, 19:01   #10
Member
 
Country: New Zealand
Length: 3m +
Join Date: Nov 2011
Posts: 22
Quote:
Originally Posted by willfinch36 View Post
Got a picture of the said idea? Would be interesting to see....
Ive not actually but just imagine a container of water sat on top of a car with a hose leading to the motor down below, nothing else to it im afraid. This gravity fed system will provide far less water flow than a mains fed tap.
__________________
rich hand is offline   Reply With Quote
Old 27 March 2012, 19:02   #11
Member
 
Country: New Zealand
Length: 3m +
Join Date: Nov 2011
Posts: 22
Quote:
Originally Posted by 9D280 View Post
Here there be many discussions.....

Most would agree at least long enough for it to warm up & open the thermostat. Which instantly opens up a huuuuge volume of water passages inside the head that the hose might not be able to keep up with, and how do you know when that has happened?
I for one don't know?
__________________
rich hand is offline   Reply With Quote
Old 28 March 2012, 10:36   #12
Member
 
Country: UK - Scotland
Boat name: Wildheart
Make: Humber/Delta Seasafe
Length: 5m +
Engine: Merc 60 Clamshell
MMSI: 235068449
Join Date: Apr 2007
Posts: 4,667
My point exactly!
__________________
9D280 is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off




All times are GMT. The time now is 11:18.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2024, vBulletin Solutions, Inc.