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Old 16 January 2011, 13:56   #1
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Country: UK - Scotland
Town: cuan ferry
Boat name: spartan
Make: humber
Length: 5m +
Engine: yamaha F115
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optimax 150hp

Hi all wondering if anyone can shed light on longevity of these engines mercury optimax 150hp any problems, thinking of getting one, who out there has the most hours on theres?
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Old 16 January 2011, 17:56   #2
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Country: UK - England
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Boat name: SMH Rib / War Shot
Make: Ribtec / Scorpion
Length: 4m +
Engine: 10hp Yam / 150hp opt
Join Date: Sep 2003
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2001 680hrs

We have a 2001 with, I think 640 or 680hrs.

Generally pretty reliable.

Only problems have been:

Running a little hot at displacement speeds at the beginning of the season. New impeller sorts that.

Random relay failure. Engine just wouldn't start. New relay sorted.

HT lead chafed through causing small loss of power. Took ages to find but cheap fix in the end.


Still running well. Reasonable on fuel and fantastic torque.

Been really happy with it.
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Old 16 January 2011, 18:12   #3
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Country: UK - Wales
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Make: Vipermax 5.8, SR4.7
Length: 5m +
Engine: 150 Opti, F50EFi
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Posts: 6,298
The biggest downside to me is they're very noisy at idle. compared with a fourstroke. This may not be an issue for you though.
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Old 17 January 2011, 03:33   #4
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The Harbour patrol in Christchurch have this Opti and the service Guy tells me the hours on the engine is now 1200+ !
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Old 17 January 2011, 06:07   #5
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Fantastic torque and speed. Brilliant V6growl through the mid range, but quiet enough on the plane or at idle. Slightly noisier than 4S but heh, they aren't like the old oil burners. Quiet enough for us. Pretty good on fuel too, IMHO.

We had a lead rub through the rubber, which caused intermittent power problems also. Not sure if it was the HT one. PITA, but once sorted all excellent.
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Old 17 January 2011, 18:38   #6
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Country: UK - Scotland
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Join Date: Jan 2011
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optimax

Thank you for all your help but the one I was going to buy has gone.
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Old 18 January 2011, 18:12   #7
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Country: Ireland
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Make: avon 6m\ osprey 6,25
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Engine: outboard suzi df140
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optimax 150

cant see it been as good as your yam115 2 stroke
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Old 19 January 2011, 04:09   #8
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Country: UK - England
Town: Southampton
Boat name: Hissing Sid
Make: Ross Smith Cobra
Length: 6m +
Engine: 200HP Optimax
MMSI: 235038046
Join Date: Jun 2002
Posts: 3,803
I think Tim Griffin on here got over 3000 hrs out of his 150hp....

He would need to confirm that mind
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Old 19 January 2011, 13:38   #9
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Make: Valiant
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Cracking package the 150.

Have a few customers with 500 hrs upwards showing on them and still going strong.
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Old 22 January 2011, 10:59   #10
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Country: UK - England
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Boat name: Hissing Sid
Make: Ross Smith Cobra
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Engine: 200HP Optimax
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Not to mention mine's got about a 1000 hours....
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