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Old 10 December 2018, 16:16   #1
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Country: UK - England
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Engine Flushing Tank

Hi all,
I have a poor water pressure at home which isn't good enough to get a water flow through my Yamaha 150 four stroke pee hole, if I use engine muffs with the motor running or the engine flushing point connected to the hose. I don't want to risk not fully flushing the motor so I cut the top out of an old IBC tank that I can keep where I'll store my boat (once garden is finished...), requires a bit of a clean but once I clad the outside in some larch I have left over from a log store build it should look OK in the garden. Then just a case of reverse the boat back to the tank, drop the outboard down into it, run the motor to flush, pull forward a couple of ft then drop the outboard again to drain. I'll make a lid for it too to keep leaves and crap out of it, also easy to change the water as required, just have to open the drain valve.
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Old 12 December 2018, 15:58   #2
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A 55 gallon plastic drum cut at 2/3 would normally be able to do the trick for a 25" XL legged outboard.
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Old 17 December 2018, 20:45   #3
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transom reinforcing plate

ive got to do a transom reinforcing plate for my rib and I am looking for the bolt hole spacing for the motor its a honda 150 can any body point me in the right direction
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Old 18 December 2018, 06:01   #4
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I use an old garden water butt with the top 12inches cut off as an outboard flush
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Old 21 December 2018, 06:02   #5
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I've yet to come across such low pressure that an outboard won't flush properly, are you sure you don't have a pump issue. Anyway the company I use for saltaway solution sell flush bags, surely boating stores in the U.K. have such items. https://www.salt-away.com.au
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Old 21 December 2018, 08:12   #6
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My Suzuki will thrown an overheat alarm on muffs, use a cut down 55 gallon plastic drum now.
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Old 21 December 2018, 10:01   #7
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No problem with the water pump/impeller, Yamaha main agent confirmed that the 150 is not great on muffs and often you can’t get the stream out the pee hole. I had the tank at home and wasn’t been used so made sense to convert it for engine flushing. Plenty of space at home so no need to buy a flushing bag. The tank is nice and deep too.
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Old 22 December 2018, 10:19   #8
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Quote:
Originally Posted by Pipster100 View Post
No problem with the water pump/impeller, Yamaha main agent confirmed that the 150 is not great on muffs and often you can’t get the stream out the pee hole. I had the tank at home and wasn’t been used so made sense to convert it for engine flushing. Plenty of space at home so no need to buy a flushing bag. The tank is nice and deep too.
That's interesting, I have a friend with twin Yam 150's which pump ok on muffs but not as well as his twin 300 Suzuki's on muffs. Maybe it's a Yam thing, can you post if yours improves using a tank, thanks.
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Old 22 December 2018, 11:40   #9
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Hi Jonp, engine runs perfectly in the tank, strong flow from the pee hole, engine temp normal as if the boat was launched.
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Old 22 December 2018, 22:48   #10
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Honda 225 does the same on muffs and needs a tank to flush , evinrude no probs on muffs
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Old 23 December 2018, 22:23   #11
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Apparently both 2 and 4t yams don’t run well on muffs. My hpdi wouldn’t get s tell tail spout on muffs but worked fine in a tank.

Yam specialist says you need a head of water above the intake to ensure a good pick up. Cut down Ibc looks like a good idea
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Old 23 December 2018, 22:31   #12
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My Suzuki DF140 would not show water from the pee hole on muffs with the type that feeds water from both sides, but works fine on the type that only feeds one side. Go explain [emoji848]
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Old 24 December 2018, 20:19   #13
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I'm finding it very hard to understand why flushing on muffs is such an issue for the UK side of the pond. My local ramp will have at least 200 boats launching from its ramps daily now we are in school holidays, with almost every owner flushing from the 12 wash down bays. The next town to my south has far more boat launches daily where once again each boat flushes and washes from the provided facilities.

The only time I ever here of issues flushing is after someone has driven through mud or sand blocking the tel-tale outlet. Most outboards are large here and mostly set up as twins.

Why is the pressure so low in the UK, I don't remember ever having such poor water pressure in any of the areas I lived back there ( I moved around a fair amount ). How long would it take to put 20lt into a drum.
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Old 24 December 2018, 20:21   #14
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Just found this, which sounds pretty pathetic https://www.watersafe.org.uk/advice/...r_must_supply/
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Old 24 December 2018, 20:40   #15
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Personally I don't mind it now, I just flush without running it most times is flush port and then a trip to loch lomond (fresh water) couple times a year to give engine and trailer a good rinse off.
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