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ContinuousWave: Whaler Performance
Twin to Single engine on 18' Outrage
|Author||Topic: Twin to Single engine on 18' Outrage|
posted 04-06-2004 10:39 AM ET (US)
I have a 1989 18' Outrage with twin 70hp Johnsons and I am repowering with a single Yamaha 150 4 stroke.
I am concerned that the 8 mounting holes from the twin setup will weaken the transom in a single setup. One mechanic told me a aluminum plate mounted over the transom would add strength. I do not think just glassing in the holes would be enough.
The weight of the single yamaha is 15lbs more than the twin Johnsons.
I need as many opinions as possible to avoid a costly mistake.
posted 04-07-2004 12:13 AM ET (US)
The old holes will not weaken the transom. Plug them with epoxy filler and gelcoat. For a quick but ugly fix, plug the holes with through bolts and Lifecaulk, or 3M 4200.
The real costly mistake is buying the 4 stroke. You'll get comparable economy, and better performance with a direct injected 2 stroke, and they're less expensive to purchase.
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