advice re outboards

fitou · 06 April 2009, 08:48

Hi have been looking around for a RIB and have seen a Ribtech that I am interested in it has a 135hp 2.5 V6 2 stroke outboard. Is this engine going to be thirsty or what is it likely to cost me to run fuel wise and servicing, thanks

K&S · 06 April 2009, 09:03

Easier to answer the question knowing the length of the boat.

Poly · 06 April 2009, 09:03

Quote:

Originally Posted by fitou

Hi have been looking around for a RIB and have seen a Ribtech that I am interested in it has a 135hp 2.5 V6 2 stroke outboard. Is this engine going to be thirsty or what is it likely to cost me to run fuel wise and servicing, thanks

Compared to cars all outboards are thirsty!
2 strokes are particularly thirsty.

That engine will be burn 50L of fuel per hour if you give it the chance. How thirsty depends on fast you want to go, the load, the boat, the waves, the driver etc.

I can't comment specifically on servicing but IMHO everything marine is expensive, on top of which most marine mechanics are associated with main dealers which keeps prices high. I'm not aware of particular brands being more or less expensive, with the exception of the E-tecs with their 3 yr service interval.

Downhilldai · 06 April 2009, 19:09

If it's a 135 Optimax, then it will be more economical than the carb version. A 135 Opti on a 6m(ish) RIB will cruise at around 1.2nm/litre. Full pelt would be around 0.7nm/litre.

Annual servicing should cost £150 - £200.

Bigmuz7 · 06 April 2009, 20:54

Quote:

Originally Posted by Polwart

That engine will be burn 50L of fuel per hour if you give it the chance.

I had one (merc 135 2 str) on a 5.8 that never burned anywhere close to that, was a lightish boat mind you,.. but that sounds a bit heavy to me

Kernow Buoy · 06 April 2009, 21:28

Would I be right in thinking its a Ribtec 5.85 with a 135 Verado?

Mollers · 06 April 2009, 21:29

Quote:

Originally Posted by Kernow

Would I be right in thinking its a Ribtec 5.85 with a 135 Verado?

A Verado is a 4st ya clown.

Kernow Buoy · 06 April 2009, 21:42

Quote:

Originally Posted by Mollers

A Verado is a 4st ya clown.

well my moneys still on it being this
http://www.boatsandoutboards.com/view/F195817

Downhilldai · 07 April 2009, 01:27

Quote:

Originally Posted by Mollers

A Verado is a 4st ya clown.

Soooopercharged too. Now they do like a drop of fuel.

fitou · 07 April 2009, 16:39

Thanks for the replies it is on a Ribtech 585 that is advertised here

http://www.theyachtmarket.com/boats_...engthunit=feet

any comments gratefully appreciated. This is the sort of set up I am looking for but just a bit unsure about the engine don't want anything that is going to be to expensive to run.
thanks

Bigmuz7 · 07 April 2009, 18:51

Quote:

Originally Posted by fitou

Thanks for the replies it is on a Ribtech 585 that is advertised here

http://www.theyachtmarket.com/boats_...engthunit=feet

any comments gratefully appreciated. This is the sort of set up I am looking for but just a bit unsure about the engine don't want anything that is going to be to expensive to run.
thanks

Well .. when it comes to boating inevitably some things become expensive

I like that engine, you'll get decent economy with it on that set up, compared to most other makes of its age, I really miss the 150 optimax I had, it was very frugal on a 6.3m I had

, they both share the same V6 block, and it runs sweetly

might be worth paying someone to check the motor if you can before you buy though ..

Kernow Buoy · 07 April 2009, 18:57

Fitou
I've got a Ribtec 5.85 with an elderly 90 Yamaha 2 stroke, it's seriously under powered having a top speed speed of 30kts, I'm looking to re-engine with either a 135 or 150 opti, I reckon the set up your looking at is bang on.

PS probably seen it but this thread http://rib.net/forum/showthread.php?...ht=ribtec+5.85 is a mine of info about the 5.85.

Mollers · 07 April 2009, 19:16

Quote:

Originally Posted by Kernow

Fitou
I've got a Ribtec 5.85 with an elderly 90 Yamaha 2 stroke, it's seriously under powered having a top speed speed of 30kts, I'm looking to re-engine with either a 135 or 150 opti, I reckon the set up your looking at is bang on.

PS probably seen it but this thread http://rib.net/forum/showthread.php?...ht=ribtec+5.85 is a mine of info about the 5.85.

Don't the SR 5.4 boys do cartwheels over those Yam 90's?

If it's a beauty, it might do rather well.