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19 November 2011, 11:28
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#1
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Member
Country: Luxembourg
Town: Hesperange
Make: Searider 5.4
Length: 5m +
Engine: Yamaha 75HP
Join Date: Oct 2008
Posts: 170
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Need advice - SR 5.4 + Yamaha 115HP 4 stroke?
I found 5 years old Yamaha 115 HP 4 stroke and I do not know if this engine could go to my Avon Searider 5.4?
Is it not to heavy?
Really need your advice guys.....
Thank you
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19 November 2011, 11:41
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#2
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Member
Join Date: Jun 2010
Posts: 2,934
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that is going to be too heavy i'd say.
most seem to go with 90hp yam 2 strokes as the ideal setup.
cheers
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19 November 2011, 14:15
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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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No chance. Best bet is to let me buy the 115hp and I may have a Yam 90hp 2 stroke here at the moment which could be available at the right money
Peter
Peter ~ Boatsandoutboards4sale ~ askboatsandoutboards4sale@sky.com ~ 07930 421007
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19 November 2011, 19:58
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#4
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Member
Country: UK - Wales
Town: Southampton
Boat name: DynaMoHumm/ SRV/deja
Make: Avon8.4, 5.4 & 4.777
Length: 8m +
Engine: Cat3126 Yam 90 &70
MMSI: 42
Join Date: Dec 2003
Posts: 6,562
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The transom might handle the weight id you beef up the support bars. ,make something up out of scaff poles and plate but it would porpoise a lot providing the stern didn't didn't forget to float. A Yam 115 2 stroke however is a lovely solution.
How heavy is the four stroke I'm thinking 195 kilos which is a lot of weight tats even more than me!
The Suzi 90 (new model) is a light 4 stroke and that comes in at 148 kg but thats still a bit lardy
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20 November 2011, 19:38
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#5
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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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SR5.4 is rated to 90hp max.
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20 November 2011, 19:49
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#6
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Member
Country: UK - England
Town: Mighty Penryn
Boat name: Little Joe.
Make: Avon Searider
Length: 4m +
Engine: Honda BF50
Join Date: Aug 2005
Posts: 8,872
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Quote:
Originally Posted by Downhilldai
SR5.4 is rated to 90hp max.
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But apparently " Hull rateings are flexable and open to change." 
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22 November 2011, 05:45
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#7
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Member
Country: USA
Town: Alaska
Boat name: Heavy Hitter
Make: Zodiac
Length: 5m +
Engine: 115hp Outboard
Join Date: Nov 2011
Posts: 26
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The 115 4-stroke would be a bit heavy...I run a 115 2-stroke on my 5.3 Zodiac and it does very well. Like others have said the 2-stroke 90 will get the job done. The Zuki 4-strokes in that class are impressive too.
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24 November 2011, 20:25
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#8
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Member
Country: UK - England
Town: devon
Boat name: hoopla
Make: avon
Length: 5m +
Engine: suzuki
Join Date: Feb 2011
Posts: 15
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My 5.4 Searider states 120 hp and 8 persons on its build plate?
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24 November 2011, 20:53
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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 monkeydiver
My 5.4 Searider states 120 hp and 8 persons on its build plate?
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Back in '91, I bought a new Fletcher 140 that was rated to 85hp on the manufacturer's plate, while the handbook, sales brochures and all other 140s I've seen from that era were rated to 75hp.
And No, I hadnt' tinkered with the plate. 
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25 November 2011, 08:17
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#10
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Member
Country: UK - Wales
Town: N Wales Chester
Boat name: Mr Smith
Make: Humber
Length: 6m +
Join Date: Feb 2009
Posts: 5,238
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Too heavy, even if transom takes it, it will sit too low in the water. Water would come over the transom if a duck swam past! As for reversing, best have a bilge pump ready or some plastic scoops.
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25 November 2011, 09:01
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#11
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Member
Country: UK - England
Town: Fareham
Length: 6m +
Join Date: Sep 2003
Posts: 7,866
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So how heavy is a 90/115 2 stroke? I'm guessing the 4 stroke is around the 200 kilo mark.
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Andy
Looks Slow but is Fast
Member of the ebay Blue RIB cover club.
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25 November 2011, 10:03
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#12
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Member
Country: UK - England
Town: Plymouth
Length: 6m +
Join Date: Mar 2011
Posts: 2,693
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90 yam (3C) 2 stroke is about 125kgs.
115 2 stroke (V4) Yam is about 160kgs.
100 4 stroke is 170kgs.
115 4 stroke Yam is 190kgs.
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02 December 2011, 15:55
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#13
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Member
Country: Luxembourg
Town: Hesperange
Make: Searider 5.4
Length: 5m +
Engine: Yamaha 75HP
Join Date: Oct 2008
Posts: 170
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What with Opti 90 HP?
or E-Tec 90HP?
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02 December 2011, 18:44
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#14
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Member
Country: UK - Scotland
Town: West Scotland
Boat name: Orca
Make: Humber Ocean Pro 5.5
Length: 5m +
Engine: Tohatsu 115 TLDI
Join Date: Oct 2007
Posts: 172
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Quote:
Originally Posted by HUMBER P4VWL
Too heavy, even if transom takes it, it will sit too low in the water. Water would come over the transom if a duck swam past! As for reversing, best have a bilge pump ready or some plastic scoops.
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Agreed.
Years ago my old dive club had an early '80's SR5.4 with a 115hp Yam 2 stroke, great fun but it shipped water over the transom even when lightly loaded, mind you it did have a double A frame weighing about 2 tonne. 
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05 December 2011, 10:01
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#15
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Member
Country: UK - Scotland
Town: Glasgow
Boat name: snagglepuss
Make: Shetland
Length: 6m +
Engine: 90 hp Outboard
Join Date: Nov 2011
Posts: 562
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Hi Zubol
you sorted yet? and did you find out how many hours the yamaha had on it?
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