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Old 21 January 2013, 15:34   #1
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20/25hp 2 Stroke Shortshaft Outboard

Want a little extra power this year and am after a 20/25hp.

Two stroke/Shortshaft/Tiller control.

Must be tidy and reliable.

Ideally Mariner/Mercury or Yamaha twin cylinder.

I do have a 2005 9.9hp Shortshaft Johnson Fourstroke in mint condition less than 75 hours use I could P/X or swap.
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Old 21 January 2013, 18:38   #2
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2008 short-shaft 25hp models at Bill (how much) Higham!
Buy Used Outboards yamaha 25hp short shaft, manual start, tiller control 25.0HP Outboard at Bill Higham Marine
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Old 21 January 2013, 20:58   #3
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There are no modern 20 HP in 2 strokes mentioned brands, just 25 & 30 HP upwards. Get any Tohatsu, Nissan, Mercury 25 and pas it to 30 HP for peanuts cost. Or check the Yam 25 conversion kit price to pass it to a 30HP. Both 25 & 30 mentioned engines brands are same size & weight, just HP restricted.

Happy Boating
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Old 22 January 2013, 03:18   #4
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There are no modern 20 HP in 2 strokes mentioned brands, just 25 & 30 HP upwards. Get any Tohatsu, Nissan, Mercury 25 and pas it to 30 HP for peanuts cost. Or check the Yam 25 conversion kit price to pass it to a 30HP. Both 25 & 30 mentioned engines brands are same size & weight, just HP restricted.

Happy Boating
Not 'any' Merc 25 though, only the one which is a Twatsoo under the paint.
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Old 22 January 2013, 10:50   #5
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converting a modern tohatsu 4 stroke from 25 to 30 will involve

ecu
cam
inlet throttle body
throttle cam
stickers

I would guess 800 for parts

converting a yamaha 25hp 2 stroke to 30hp is not possible.. 4 stroke is as above?
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Old 22 January 2013, 11:55   #6
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Quote:
Originally Posted by simsy View Post
converting a modern tohatsu 4 stroke from 25 to 30 will involve

ecu
cam
inlet throttle body
throttle cam
stickers

I would guess 800 for parts

converting a yamaha 25hp 2 stroke to 30hp is not possible.. 4 stroke is as above?
A four stroke is out the question due to weight.

Yamaha did do a 25/30 from a two cylinder block, the one on bill highams site. That's too much though!

Yamaha also did a slightly smaller 20/25 again 2 cylinder, I did have one of these once, 1992, but I have seen them maybe up to 2002, not sure if they were done any later. I think these were usually autolube.

I like the merc/mariner 25hp as they are simple, I forgot about the Tohatsu 25 that would also be good.

I like Yamaha and Mariner as I have access to the parts for these, and as mariner rebadge the Tohatsu 25, these are good aswell.
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Old 22 January 2013, 13:53   #7
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The 3-cyl Yam 25/30 is a good motor, but very rare in 25hp guise.
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Old 25 January 2013, 11:24   #8
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Originally Posted by Downhilldai View Post
The 3-cyl Yam 25/30 is a good motor, but very rare in 25hp guise.
I think these are about 60kg, possibly a little more, a little on the heavy side for me. Trying to keep the weight as close to my current set up with the fourstroke as possible.

I like this one, if it was 495 cheaper!

http://www.ebay.co.uk/itm/MERCURY-20...item2a212778b7
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Old 25 January 2013, 12:45   #9
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Just sold a 2005 20hp yam, same as 25hp, except exhaust and carbs...
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Old 25 January 2013, 12:55   #10
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Quote:
Originally Posted by samt View Post
Want a little extra power this year and am after a 20/25hp.

Two stroke/Shortshaft/Tiller control.

Must be tidy and reliable.

Ideally Mariner/Mercury or Yamaha twin cylinder.

I do have a 2005 9.9hp Shortshaft Johnson Fourstroke in mint condition less than 75 hours use I could P/X or swap.
We have one, belongs to a customer info@bembridgemarine.com and I will send you some pictures etc.
Jim
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