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Old 24 October 2012, 07:46   #1
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advice on buying 150hp O/B

I have a friend who is in the market for a new 150hp O/B and while resonable experienced with smaller engines asked my opinion on the larger ones. The boat it will be going on is 7m Aluminium imported Sports boat not a RIB for reasons which are complex.

Although I don't have one, my view is that he wouldn't be going far wrong with a Yam 150 4S, he has been interested in an etec but while I know members rave about them, they are a bit different and not as common.

He wants the most reliable engine and as a semi retired will be using the boat alot in Norway and the UK.

He will be fishing with family and friends, maybe 6 in the boat max and is thinking a 120ltr tank would be suficient.

Does anyone have any views and experiences with this size Yam, do they have known issues?

Has anyone bought a Yam 150 recently and knows the going price?

Many thanks

Davej
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Old 24 October 2012, 09:53   #2
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My advice Dave especially with engines has always been "Buy the dealer, and not the brand". Depending where you will be you should look at your local dealer and the level of after sales in your area/country.

No point having Brand X if availability of spares in your area isn't good and there aren't any experienced mechanics around.

That being said I would seriously look at the Mercury 150 4 Stroke given that it is a recently designed engine incorporating all the latest bits of technology. The Yam 150 has been around for a while and is certainly known as a very reliable engine, but I don't think it ever wins any awards for Economy or speed.

If you're going to be trolling for extended periods of time, forget the ETEC or any other DI engine. I own a 225 ETEC so I am speaking from experience and spend several hours trolling at between 4-6 knots....stick with a 4 stroke for that.

The DI's will give you more power and be alot more fun to drive, but sounds like for the application you have mentioned that isn't really a requirement.

Can't help you much with prices as am not in the UK, but I have a price infront of me from 2010/2011 for a Yamaha F150AETX at €13,188
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Old 24 October 2012, 15:59   #3
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The Mercury F150 is very cheap to at the minute too!.
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Old 24 October 2012, 16:38   #4
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Don't believe anyone who says a 150hp etec will be more powerful than a 150hp 4-stroke.

Similarly, don't pay much regard to list prices, as discounts are ALWAYS available, but will vary according to the manufacturer.
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Old 24 October 2012, 16:53   #5
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My advice Dave especially with engines has always been "Buy the dealer, and not the brand".
Never a truer workd spoken, Tell him to look at what dealer support is available in his area, make sure he gets the engine that has the best warranty and dont be tempted to save 500 and go with a brand he is not confident will be well supported where the boat is going to be located.

All bands have issues that will need sorting out from time to time and a good dealer will make the whole experience much more bearable.
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Old 25 October 2012, 06:37   #6
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Thank you to for all for the helpful replies, I think we have pretty much deceided on a Yamaha 150 because of its reputation for reliability. Although after looking at the Mercury sales clips it looks a great engine, particularly the DIY servicing and ease of access. However, my own dive club have a mid 90s Yam 115 and its just a bril engine,the only part that we have ever replaced was a starter solenoid anything else has been a service item.

For those of you with the bigger RIBs and similar engines what sort of fuel tank capacity do you have- would a 120ltr tank be about right?

Again many thanks

dave
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Old 25 October 2012, 06:47   #7
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For those of you with the bigger RIBs and similar engines what sort of fuel tank capacity do you have- would a 120ltr tank be about right?
I'd go for as big a tank as possible ...nothnig worse than spending the day tank watching ......120l will work , but if you can go go to 200L + I think you'd be more relaxed ....
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Old 25 October 2012, 07:25   #8
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Great wonder what other people think?

Thanks Dave
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Old 25 October 2012, 08:57   #9
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Depends how far you intend to go.
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Old 25 October 2012, 09:47   #10
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I reckon you would be looking at around 25 litres per hour with the Yam150 on that boat, so that should give you an idea of the fuel tank size you might need.

120L would be around 4 hrs at cruise with approx 20% reserves
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