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Old 14 October 2003, 08:15   #1
tue
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Engine swap?

I currently have a 200hp Mariner bolted to the transom of my 6.5m Ribtec. I personally feel this is more engine than required and hence burning more fuel than required. The opportunaty has arisen at work of a 150hp Mercury engine. It is 1995 so 4 years older than my current engine but in perfect working order. The owner has offered me his engine plus 1250 for mine. Is it worth the swap do you think, as I don't feel I will loose too much performance about 5mph?
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Old 14 October 2003, 08:28   #2
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Unless the smaller engine is an Optimax and your current one isnt, I would say theres no point in the swap. If they are the same technology (e.g. carb or efi) then the 200hp at cruising will burn the same as or arguably less than the 150hp at cruising speed. Its only when you really open the throttle you would notice the difference.

All FWIW and IMHO of course!

Alan
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Old 14 October 2003, 09:06   #3
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It won't be an Opti, the earliest ones over here didn't arrive untill about 1999.

I aggree with the rest tho, the 200 will work a lot less than the 150 will have to, it is also an older engine so may devalue the boat. A 200 is quite large on that mind you. Good fun I bet.
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Old 14 October 2003, 09:23   #4
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Re: Engine swap?

Quote:
Originally posted by tue
The owner has offered me his engine plus 1250 for mine.
If I could trade my engine in for one that is 4 years younger and 50hp more, for just 1250, I'd jump at the chance. (Think about it, who's getting the better deal here?)
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Old 14 October 2003, 09:31   #5
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Re: Re: Engine swap?

Quote:
Originally posted by Richard B
If I could trade my engine in for one that is 4 years younger and 50hp more, for just 1250, I'd jump at the chance. (Think about it, who's getting the better deal here?)

Good point!

I sympathise with Tue's position - running a carb Johnson VRO 150 lightened our wallets considerably when we first had the DS21. The only true solution is swap the old carb 150hp for a shiny Optimax or HPDI. You might get 1500-2000 for your carb engine vs 7000 or so for an Opti unless you can find a good grey import deal or 2nd hand one but it will transform your ribbing life!
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Old 14 October 2003, 13:17   #6
tue
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There is also a new 150hp Ficht in the shop too, but they want 3500 plus my engine and I can't quite afford it yet as I need more important stuff for my RIB at the moment
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Old 14 October 2003, 16:38   #7
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Quote:
Originally posted by tue
more important stuff for my RIB at the moment
The only thing more important than a 150 FICHT would be a 200 FICHT
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Old 14 October 2003, 17:06   #8
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Quote:
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The only thing more important than a 150 FICHT would be a 200 FICHT
And you say i like my power!
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Old 14 October 2003, 17:09   #9
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hee hee! Getting used to full throttle more and more!

(and so is jackeen!)
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Old 14 October 2003, 18:03   #10
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more important than a ficht..............must be an opti
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