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Old 05 November 2002, 13:44   #21
Country: UK - England
Town: Salisbury
Length: 5m +
Join Date: Dec 2001
Posts: 459
agree with


My comments about flushing an inboard were based on my experience of owning a mercruiser 4.3 petrol which i understood was totally cooled by seawater, hence flushing it was important because of internal corrosion

boating =money pit

unless you own something like a wooden mirror dinghy !

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Old 05 November 2002, 15:01   #22
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Country: UK - England
Town: Berkshire and Devon
Make: Lodestar
Length: under 3m
Engine: Mercury 5hp
Join Date: Jul 2002
Posts: 5,015
- or a SIB!

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Old 08 November 2002, 13:58   #23
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Country: UK - England
Town: Gosport
Boat name: April Lass
Make: Moody 31
Length: 9m +
Join Date: Aug 2001
Posts: 4,837
Ear muffs are very easy to use for both inboards and outboards. So should inboards be flushed? Have a look at the price of heat exchangers which should answer the question, they are not cheap.

My Pacific will be spending large amounts of time on a trailer, however I would like to run the engine up without having to launch her each time. Because she draws water though a sea cock rather than the stern drive ear muffs can't be used. Here is a pic of the modified top of the sea cock with some 3/4 inch marine plumbing so an ordinary hose can be attached. With the main sea cock closed and the red valve opended water flows into the engine heat exchanger and out through the exhaust. Cost of the bits 11 and half an hour in a machine shop.

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