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Old 03 December 2009, 03:55   #11
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Originally Posted by chewy View Post
Someone mentioned on another thread you just need a larger injector to get 30hp, anyone know a part number or where to get one?
That will depend on the make & model of your 25. I have successfully upped a 25 to 30 with a change of throttle link cam. I've also seen posts by Loco-z that essentially mean you are not far off a total rebuild where the bits you keep are not much more than the block & leg (- er I mean driveshaft housing at risk of starting that sub-thread again!)


Do you actually mean injector? I ask because that would imply 4- stroke, which in turn means added lardyness. As Nasher says, if you get an old premix twin pot it will be substantially lighter. Have a look at http://www.old-omc.de/j_1977/seite_29.jpg ('77 Johnson Catalouge) - The 35Hp short shaft (I assume you'd have that for a SIB) is all of 114 Lbs - call it 51Kg. My 3-pot Suz DT25 was 15 years younger and nearer the 70Kg mark...

The twin system for the forces I think is used on twin 40s - so you get a portable 80Hp rig.
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Old 03 December 2009, 03:58   #12
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Meant jet, sorry.
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Old 03 December 2009, 04:31   #13
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Thought you might. My commets in the first paragraph still apply!
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Old 03 December 2009, 05:54   #14
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25hp it is then.
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Old 11 December 2009, 16:58   #15
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Yeah, we do a TEST kit for the twin 25/30hp, its a lot of modification to make it all work and probably pretty expensive!!
2nd hand ones are very hard to come by but we can also get you a new one!.
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Old 11 December 2009, 17:01   #16
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Here is a picture for you, these are the old model 25hp 2 strokes, but we do it for the new 25/30 as well now.
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Old 11 December 2009, 17:31   #17
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Looks good but I bet it costs more than the engine and boat.
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