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Old 16 January 2007, 12:03   #1
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Suzi or opti?

This is a very broad question indeed, but which is better in terms of, well, everything. Speed being the odvious one.

Suzuki 140 4 stroke or Mariner Optimax 225
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Old 16 January 2007, 12:08   #2
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What are you up to?
Very different engines for different size boats for a start!
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Old 16 January 2007, 12:09   #3
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Very different engines for different size boats for a start!
Perhaps you could expand on that point a bit more.....
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Old 16 January 2007, 12:14   #4
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Perhaps you could expand on that point a bit more.....
Are you taking the piss?

140 Susie good for 6m rib, no good for a 8m one!

225 Optie good for a 8m rib too much for a 6m!
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Old 16 January 2007, 12:15   #5
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Mercury OptiMax look better than the Mariner versions I reckon.
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Old 16 January 2007, 12:51   #6
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Are you taking the piss?

140 Susie good for 6m rib, no good for a 8m one!

225 Optie good for a 8m rib too much for a 6m!
No Im not. Sorry if this sounded like a stupid question; I should have been more specific.

We're talking about a 7m RIB here, nothing heavy duty like an Arctic 22 - just a normal 7m RIB.

I'll throw my thoughts in here for people to comment on:
Suzi is much more economical, it is a 4 stroke so sounds quiter and smoother. Speed will be in the reagion of about 35 knots I would imagine.
Opti is a much bigger engine. I would imagine top speed would be around the 50 knots mark. It will be noiser I would think (although the sound of a 225 does apeal to me more than the gentle hum of a suzi 140) and will drink more fuel (and oil of course).

Basically I'm trying to weigh up what is better
Suzi for quiteness and economy
Opti for performance and speed.

Do people think that there would be a dramatic increase in fuel used at say 30 knots with the Opti as opposed to the suzi?
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Old 16 January 2007, 13:13   #7
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Do people think that there would be a dramatic increase in fuel used at say 30 knots with the Opti as opposed to the suzi?
IVHMO i downt fink yew shud bee allowd enywher neer a bote

IHMVO yew unnerstand

gArf
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Old 16 January 2007, 13:20   #8
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That's rich
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Old 16 January 2007, 14:08   #9
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Tim

I don't think the fuel consumption will be very different at 30knts.

The Opti would be running well down its rev range and the Suzi near the top of its rev range.

The Opti then gives the option to tear around when you want to as well.

I honestly think that if you go with the smaller engine you'll regret it very soon. 7M is quite big for 140HP

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Old 16 January 2007, 14:14   #10
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Thanks Nasher, that was pretty much what I wanted to hear
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