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Old 28 May 2012, 05:06   #1
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Country: UK - England
Town: Chesterfield
Make: Avon Searider 5.4
Length: 5m +
Engine: 80hp 2 stroke
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Age of Mariner 80hp Blueband and Avon SR5.4 help please

I have just recently bought an Avon SR5.4m with an 80hp blueband Mercury engine.

Took it out down the Menai Straits and around the stacks at Holyhead at the weekend and managed 27mph.

Just wondering how do I determine the age of the hull and engine.

a plate on the back of the transom is AVB19600M831-A does that means it's a 1960 hull ?

and the engine serial is 9367654


The tubes are in perfect condition with no patches anywhere, the only "negative" is where the bow dodger was removed leaving the glue stain.

Also, wondering if that's all the power I am going to get from the engine. Sea state was reasonable, not flat, with 2 up and 40 litres of fuel.
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Old 28 May 2012, 13:27   #2
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Nice setup you have there.

We are tarting one up of similar age...

1978 Avon Searider 5.4 Restoration.

Your serial # comes back as an 1980/81 engine.
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Old 28 May 2012, 13:30   #3
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Country: UK - England
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Make: Avon SR4 Zodiac 310
Length: 4m +
Engine: Merc 40 2s Merc 15 2
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Im guessing your engine is 1981 -82 ,as for your speed you will need to know what rpm your engine is doing at wide open throttle first .
The hp on Mercury engines was rated at the flywheel upto 1984 and from the prop thereafter and your engine then became the the new 75 hp in 1984, prop rated.
Max rpm for your engine is 5000 - 5500
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Old 28 May 2012, 16:28   #4
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Love the photo
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Old 28 May 2012, 18:36   #5
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Quote:
Originally Posted by Nick Hearne
Love the photo
And me, hope to see you about the menai some time.
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Old 29 May 2012, 03:33   #6
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Country: UK - England
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Make: Avon Searider 5.4
Length: 5m +
Engine: 80hp 2 stroke
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can't see your photos.

We are tarting one up of similar age...

1978 Avon Searider 5.4 Restoration.

Hi Alan,

I can't see your photos on the forum page.
Is there something in the settings i am missing ?

Mark
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Old 29 May 2012, 03:34   #7
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Country: UK - England
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Make: Avon Searider 5.4
Length: 5m +
Engine: 80hp 2 stroke
Join Date: May 2009
Posts: 19
I don't have any guages on the boat, so have no idea what rev's it's doing. Is it worthwhile ( economically speaking ) to retro fit a rev counter / speedo to this age of engine ?

Cheers
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