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Old 03 September 2004, 05:43   #1
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underwater flushing

Hi,

First off, a quick thank you to the members here.. I bought an Avon 4m Searider a couple of weeks ago.. Just before I got it, Stuart over at Saxon Wharf suggested this place as an ideal point of reference, and since then I have managed to avoid making a load of faux pas's. I have also managed to convince myself that a 5.4m Rib would be a nice Christmas present from the wife..

As for the query, my rib is moored, (95% of the year), at Royal Clarence Marina in Gosport.. It is only coming ashore for periods of maintenance, diddling etc.. (They have no slip, and the public slips in Gosport are tide restricted). I thought this would make it a lot easier to go out for a tootle any time I wanted.. Plus with two young girls, launching and recovery seemed the harder option.. However, various threads here recommend flushing through after every use, and as I don't really want to take the rib out of the water every time, I was wondering if I could attach a pair of muff's, and flush it through with freshwater whilst the rib is moored at the marina.

Thanks,
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Old 03 September 2004, 05:47   #2
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Never done it, neither have I heard of anyone doing it but I guess if you can raise your engine high enough for the water intakes to be clear of the water then I guess there is no reason why you can't do it.

Someone may correct me though!

Well done on you purchase.

Hope that helps.

Tim
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Old 03 September 2004, 05:55   #3
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Hi Tony and welcome. What O/B do you have, as some have a water inlet which is blanked off. You can remove this blanking plug connect up and adaptor to a hose and Bob's yer Mothers brother!!. We have this facility on our Yam's but must admit we've never used it.

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Brian

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Old 03 September 2004, 05:55   #4
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Well, what if......

........the engine was left down, in the water, would this not mean that the water would remain in the casing, through the exhaust and thus no salt crystals would form ?
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Old 03 September 2004, 05:58   #5
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Yes, but would.....

Quote:
Originally Posted by ashbypower
You can remove this blanking plug connect up and adaptor to a hose
........you still be able to start the engine on the tilt so that the prop and inlets were out of the water. My Yam had the hose connection you mantion, however, this did not overide the usual inlets where one usually connecs the phones.
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Old 03 September 2004, 06:08   #6
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Agree mate. However you by-pass the water pump therefore the water pressure from the hose helps flush out the coolant gallaries.
Your first point about leaving the engine down, I follow your logic but you must consider that salt water will remain in the powerhead and when dry will leave the Crystal deposits. Not wishing to teach mothers and egss etc
The main reason for fresh water flushing is to remove the salt water before deposits form.


All IMVHO of course,

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Old 03 September 2004, 06:15   #7
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Thanks for the quick replies.. The engine is a mariner 30hp. I must confess I had hoped to leave the engine down, assuming that the muffs would only allow the freshwater into the intake. But if the engine can be flushed on the tilt, so much the better.. I am not sure what is meant by the "blanking plug", does this mean when flushing I would have to remove something prior to attaching the muffs and hose??
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Old 03 September 2004, 06:16   #8
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Ahhhh, now I didn't.....

Quote:
Originally Posted by ashbypower
However you by-pass the water pump therefore the water presure from the hose helps flush out the coolant gallaries. Consider that salt water will remain in the powerhead and when dry will leave the Crystal deposits. Not wishing to teach mothers and egss etc
..........know this. Anyway, never been too good at sucking eggs, usually pay someone to do it for me. That said, I'm a pretty good pheasant plucker !
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Old 03 September 2004, 06:19   #9
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Quote:
Originally Posted by tcwozere
Thanks for the quick replies.. The engine is a mariner 30hp. I must confess I had hoped to leave the engine down, assuming that the muffs would only allow the freshwater into the intake. But if the engine can be flushed on the tilt, so much the better.. I am not sure what is meant by the "blanking plug", does this mean when flucsing I would have to remove something prior to attaching the muffs and hose??
NO if flushing using Muffs the plug remain in. I'm unsure if your engine is fitted with such a device. It would be mounted somewhere on the "Leg" normally between the lowerpart of the powerhead and the gearbox.
And looks similar to the gearbox filler plug. DO NOT USE THE GEARBOX PLUG!!!

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Old 03 September 2004, 06:21   #10
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Quote:
Originally Posted by MeMe
..........know this. Anyway, never been too good at sucking eggs, usually pay someone to do it for me. That said, I'm a pretty good pheasant plucker !
Great news for you then!! the Pleasant season is not far away now so your gonnabe busy

Brian
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