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Old 21 January 2013, 07:50   #1
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Country: UK - England
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30hp 4s - 50hp 2s?

Hi All

I'm new to the forum and would love some advice from experienced boaters out there......

I have a 5m rib with rear bench and separate console and intend to move the console forward and install a jockey to improve balance and comfort - while I'm at it I am contemplating swapping my 30hp 4s for a more powerful 2s.

We use the boat for fun only; short trips and mostly estuary so economy isn't too much of an issue. Weight though, is. Before converting to ribs I had a ski boat with a Yam 50 Autolube and loved it as was cheap and easy to fix and maintain and survived multiple dunkings (not that I intend those anymore!)

Does any one know of the weight comparison between these 2 engines -
Current: Suzuki 30hp 4s
Proposed: Yam 50hp 2s

And welcome any other intel... pros/cons, value, examples of similar jobs

Thanks in advance

Charlie
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Old 21 January 2013, 08:34   #2
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Fuel consumption and noise levels are the pro's of the 30hp...

I think you will NEED the xtra power of the 50hp...

I would expect the weight to be the same give or take..
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Old 21 January 2013, 10:42   #3
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Suzuki DF 30 (4 stroke) 243 lbs
Yamaha 50 (2 stroke) 189 lbs max, model dependent.
Note that the Yam would have to be second hand as you can no longer buy them new in this country; killed by emissions regs.
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Old 21 January 2013, 11:13   #4
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Thanks Ian/Simsy

Good to know - would be second hand. Will try to exchange/part exchange.

C
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Old 21 January 2013, 14:39   #5
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I have a Yam 50, requires prepping for sale. Immaculate (autolube). Not ready yet but will be by start of season.
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Old 21 January 2013, 15:01   #6
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keep me posted RIB-teccie!

If anyone out there has a single Jockey with back rest: I'll have no excuse but to get on with it!
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Old 21 January 2013, 16:33   #7
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Originally Posted by RIB-Teccie View Post
I have a Yam 50, requires prepping for sale. Immaculate (autolube). Not ready yet but will be by start of season.
Fantastic engines the 50G model... like hen's teeth these days!
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Old 21 January 2013, 17:23   #8
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Suzuki 30 hp 4 stroke with power trim and tilt.... Weight (lbs/kg) 216.00 lbs / 97.98 kg! Short shaft, long as above.
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Old 21 January 2013, 17:28   #9
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Quote:
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Suzuki 30 hp 4 stroke with power trim and tilt.... Weight (lbs/kg) 216.00 lbs / 97.98 kg! Short shaft, long as above.
Wow ! my 50 long is 'only' 115kg....
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Old 21 January 2013, 17:31   #10
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I thought the suzuki's were all mega light. My tohatsu is around 80kg or so, 30 hp 4 stroke efi all whistles and bells....

I tHink the 2 stroke yamaha's are really well built.... To the point whee they are bullet proof..
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