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21 August 2011, 23:11
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#1
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Member
Country: UK - England
Length: 4m +
Join Date: Aug 2011
Posts: 4
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10hp-15hp is it possible?
Hi, I have a zodiac cadet 310s with a mariner 10hp on the back and it is bledy quick. Can get on the plane with 3 adults too. It's rated for a 15, and this got me thinking, I love the engine I have now, is there anyway of tuning it to make 15hp(surely a lighter version than a stock 15??)
The engine is a mariner 10hp late model 2stroke 100:1 ratio.
Believed to be a 2004 ish engine.
Grateful of any help, cheers
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23 August 2011, 18:56
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#2
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Member
Country: UK - England
Town: gravesend
Boat name: curach/Earl
Make: seago/Lifeguard 4M
Length: under 3m
Engine: 3.3 marinar/10 hp
Join Date: Jul 2008
Posts: 802
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Intrested in this aswell,wonder if a 10hp Mercury can bw upped to a 15hp?
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23 August 2011, 19:08
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#3
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Member
Country: UK - England
Town: Plymouth
Length: 6m +
Join Date: Mar 2011
Posts: 2,693
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Short answer is Yes!!!
Peter @ Boatsandoutboards4sale ~ askboatsandoutboards4sale@sky.com ~ 07930 421007
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24 August 2011, 22:48
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#4
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Member
Country: UK - England
Town: gravesend
Boat name: curach/Earl
Make: seago/Lifeguard 4M
Length: under 3m
Engine: 3.3 marinar/10 hp
Join Date: Jul 2008
Posts: 802
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Quote:
Originally Posted by Boats&Outboards
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Cheers peter ,would it cost an arm and a leg to do? and would the prop size have to be changed?
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24 August 2011, 22:50
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#5
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Member
Country: UK - England
Town: Plymouth
Length: 6m +
Join Date: Mar 2011
Posts: 2,693
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No & No not usually but you can play with the Prop too if needed
Not sure on exact requirements for that model but it can be done
Peter @ Boatsandoutboards4sale ~ askboatsandoutboards4sale@sky.com ~ 07930 421007
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25 August 2011, 07:54
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#6
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Member
Country: USA
Town: west palm beach
Boat name: Red Baron
Make: Saturn
Length: 3m +
Engine: 15 hp outboard
Join Date: Jul 2011
Posts: 11
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yes
Quote:
Originally Posted by arvey85
Hi, I have a zodiac cadet 310s with a mariner 10hp on the back and it is bledy quick. Can get on the plane with 3 adults too. It's rated for a 15, and this got me thinking, I love the engine I have now, is there anyway of tuning it to make 15hp(surely a lighter version than a stock 15??)
The engine is a mariner 10hp late model 2stroke 100:1 ratio.
Believed to be a 2004 ish engine.
Grateful of any help, cheers
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yes and if you get access to a parts list from Mariner that as I know was built by Yamaha and compare parts like crankshaft, carburator, reed valves inbetwin 10hp and 15hp if only carburator and reefvalves difer this is what you have toreplece to make it .
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25 August 2011, 08:10
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#7
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Member
Country: UK - England
Town: Plymouth
Length: 6m +
Join Date: Mar 2011
Posts: 2,693
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Quote:
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Originally Posted by papapaul
yes and if you get access to a parts list from Mariner that as I know was built by Yamaha and compare parts like crankshaft, carburator, reed valves inbetwin 10hp and 15hp if only carburator and reefvalves difer this is what you have toreplece to make it .
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This is the Merc build motor in Belgium it was not made by Yamaha in Japan.
Peter @ Boatsandoutboards4sale ~ askboatsandoutboards4sale@sky.com ~ 07930 421007
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25 August 2011, 13:06
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#8
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Member
Country: USA
Town: west palm beach
Boat name: Red Baron
Make: Saturn
Length: 3m +
Engine: 15 hp outboard
Join Date: Jul 2011
Posts: 11
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Quote:
Originally Posted by Boats&Outboards
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Yes you may be wright and the Jaguar you've been driving is made in the Filipines not in the USA by Ford or you drive a Bentley that is made I can be sure not by Wolsksvagen.
Get real
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25 August 2011, 13:40
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#9
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Member
Country: UK - Wales
Town: West Wales
Make: Vipermax 5.8, SR4.7
Length: 5m +
Engine: 150 Opti, F50EFi
Join Date: Sep 2005
Posts: 6,299
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Quote:
Originally Posted by papapaul
yes and if you get access to a parts list from Mariner that as I know was built by Yamaha .....
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Quote:
Originally Posted by papapaul
Yes you may be wright and the Jaguar you've been driving is made in the Filipines not in the USA by Ford or you drive a Bentley that is made I can be sure not by Wolsksvagen.
Get real
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2004 Mariner 10hp motors are Mercury, not Yamaha. 
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25 August 2011, 14:29
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#10
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Member
Country: UK - England
Town: Plymouth
Length: 6m +
Join Date: Mar 2011
Posts: 2,693
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Quote:
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Originally Posted by Downhilldai
2004 Mariner 10hp motors are Mercury, not Yamaha. |
That's what I tried pointing out...get ur tin hat ready!
Peter @ Boatsandoutboards4sale ~ askboatsandoutboards4sale@sky.com ~ 07930 421007
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25 August 2011, 16:46
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#11
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Member
Country: UK - Wales
Town: West Wales
Make: Vipermax 5.8, SR4.7
Length: 5m +
Engine: 150 Opti, F50EFi
Join Date: Sep 2005
Posts: 6,299
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Quote:
Originally Posted by Boats&Outboards
That's what I tried pointing out...
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Exactly! 
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