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Old 25 August 2009, 15:21   #1
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Country: Ireland
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Make: HUMBER DESTROYER 5.8
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Mercury optimax 90

What are peoples opinions of these?Good engine?

Cost of running?
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Old 25 August 2009, 16:21   #2
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I have the 115 Opti, which uses the same 3 cylinder block. Love it to bits, reminds me of the old KH750 motorcycle I had back in late 70's.
Had it 3 years now and put just under 200 hours on it, and have not had a single issue (oh god, that has just cursed this weekend).
Its got instant power when you want it, economical (1.5miles/ltr at 30kts) and sounds great!
Servicing being mercury not the cheapest, but worth it.
Regards
Steve
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Old 25 August 2009, 16:38   #3
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i would agree, the 3cyl opti's are great. We had a 90 and it was so quiet and good on fuel. We used it on a 5.4 searider and it was perfect. Still miss it and the boat. Never had any problems other than those we caused ourselves with water in fuel. Started first time every time for 4 years. Can't beat the two stroke punch, so easy to control the boat in the rough. 4 strokes i find aren't as responsive. Horses for courses.

We now have the 175 which is the v6, sounds really growly which is good if you like it.

Optis and Etec seem to be very popular, plenty of people will probably comment. I have seen some say the 3 cyl optis use less fuel than some of the fours stroke equivalents. (cue arguement!)
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Old 25 August 2009, 16:42   #4
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Hi Paul
Just a quick note to say that we recently dinked our prop, so put your/our spare on and it runs very sweetly, thanks again. Original off to be refurbed, when I can find a good recommendation.
Cheers Steve
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Old 25 August 2009, 16:59   #5
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Quote:
Originally Posted by 250kts View Post
Hi Paul
Just a quick note to say that we recently dinked our prop, so put your/our spare on and it runs very sweetly, thanks again. Original off to be refurbed, when I can find a good recommendation.
Cheers Steve
Thanks, cant say im glad to hear it has been used, as id rather you never needed it! We had got them done through ABC boat yard in Beaumaris, Anglesey, though i imagine that is a little far for you!! Start a thread, someone will know where to go.
Good luck.
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