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Old 29 January 2013, 07:35   #1
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New Dive RIB Engine

Hi all, I'm looking for some help and advice on a new outboard engine for our dive club RIB.

We have a 6.5m Humber Destroyer, currently with a 140hp Yamaha 2-Stroke which is about 15 years old. The engine runs well and we like the power we get from it. What we don't like is the noise, smell, reliability and mostly the fuel economy we get from it.

So we're looking for something new that will cut our fuel bills.

The small amount of research we've done some far has brought up options such as the Yamaha F150 4 stoke, Mariner 150 4-Stroke or a 2-Stroke Evinrude e-etc.

We're looking for something that will give us similar performance to what we're used to with improved fuel economy.

Any one have any input advice on any of the above enignes or indeed any others that might be suitable for us?

Mark
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Old 29 January 2013, 08:12   #2
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The new Mercury/Mariner 150 looks good on paper.

A few of us on here have had trouble with Etec Engine Management Modules - at a grand to replace one - personally, I'd avoid...

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Old 29 January 2013, 09:18   #3
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The new Mercury/Mariner 150 looks good on paper.

A few of us on here have had trouble with Etec Engine Management Modules - at a grand to replace one - personally, I'd avoid...

As Willk says the new Merc looks great....funnily enough I was having a poke around with one yesterday (one of a pair of twins)..... The owner (commercial) was full of praise for them.....

For me (and poss because we live in a rural area) a good relationship with the local dealer would be a deciding factor..... that said, we now use 'Black Dog' in Looe wherever possible (post on here) who depsite the geographic seperation have always been a LOT more helpful /knowledgeable than some of our local (ish) dealers....
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Old 29 January 2013, 09:47   #4
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We run the yam 115 four stroke, great engine, good fuel consumption. Heard very good results about the Suzuki 140s fours also. Be aware all the fours are considerably heavier though!
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Old 29 January 2013, 13:27   #5
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I have heard of several Yam F115s getting rusty oil pans which basically requires replacing the powerhead since the oil's ruined. Don't know about the others.
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Old 29 January 2013, 16:02   #6
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I have heard of several Yam F115s getting rusty oil pans which basically requires replacing the powerhead since the oil's ruined. Don't know about the others.
Funny that, i have a F100 Yam in at the min with a rusty sump full of water!
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Old 29 January 2013, 16:08   #7
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If you want the same performance that you get from your 2 stroke Yam then go with the E-tec. Make sure you get the 5 year warranty though and ensure you have good fuel filters / water seperators fitted.

I know Mollers and Willk had EMM issues but I would not let a couple if instances put me off. They are great engines and there are 141 people on here who have not reported EMM problems.

That's less than 2% emm failures
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Old 29 January 2013, 16:12   #8
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We re-powered with a Merc 150hp 4 stroke;

Re-powering a Ribcraft 585
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Old 29 January 2013, 16:32   #9
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I know Mollers and Willk had EMM issues but I would not let a couple if instances put me off. They are great engines and there are 141 people on here who have not reported EMM problems.
140. Pikey Dave lost one too. I lost both of mine.

I couldn't in all honesty recommend them to another based on two out of two failing. Maybe they were abused by the previous owner - I dunno. Nice engine to use, nippy and frugal. Not sure they're suited to a Dive Club unless the maintenance is up to scratch...
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Old 29 January 2013, 16:35   #10
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See your point, would not stop me from buying another though, which just goes to show how much fun they are !
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