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Old 09 July 2008, 08:13   #1
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Ideal engine for 4.8m

Hey guys,

We're looking to purchase a 2008 4.8m rib, it's currently fitted with a 50hp 4 stroke.

Is this going to be powerful enough? Or should we be looking more at 75hp+?

Thanks,

Paul
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Old 09 July 2008, 08:37   #2
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you need to ask the manufacturer the maximum weight the transom will take, even if you find an engine that matches that weight, it may ride stern heavy, SO an engine that falls under the weight is best!!
what rib is it??
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Old 09 July 2008, 09:44   #3
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All depends on the boat and what you want to do with it. I suggest using at least 75hp if you want to travel with heavy load or rough water. If you only drive it without much in the boat you could go with just 60hp.
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Old 09 July 2008, 10:09   #4
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Originally Posted by paul325i View Post
Hey guys,

We're looking to purchase a 2008 4.8m rib, it's currently fitted with a 50hp 4 stroke.

Is this going to be powerful enough? Or should we be looking more at 75hp+?

Thanks,

Paul
Go for the manufacturers recommended max HP in the lightest engine you can find-it'll ride better. DONT go past the manufacturers recommendations-your insurance company will shaft you if you have an accident and you may ruin the handling. Worst is, you won't know if you've ruined the handling til you've paid for it...
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Old 09 July 2008, 11:26   #5
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Agree with Matt, 75 hp is likely to be OTT. If it already has a 50 hp outboard then try that first, ideally taking it for a good trial.

The round GB lads had some good fun with small ribs and 50 hp outboards.






Pete
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Old 09 July 2008, 11:51   #6
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Agree with Matt, 75 hp is likely to be OTT. If it already has a 50 hp outboard then try that first, ideally taking it for a good trial.

The round GB lads had some good fun with small ribs and 50 hp outboads.






Pete
Crikey! That is good advice, am I in the wrong site?
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Old 09 July 2008, 12:04   #7
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am I in the wrong site?
nope, but Matt is right why spend money on an engine change when it probably has an ideal sized engine.

Pete
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Old 09 July 2008, 16:04   #8
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The RIB we were looking at is made by lamberti, i've read up on them a little and they don't seem to be much cop, made in hong kong with no real UK dealer base and max rated at 50hp...

I'm also looking at a valiant 490 with 75hp, i think this might be the better option, unless anybody has any advice against buying a valiant?

We're replacing a 4m Chinook, i posted re locked engine a few weeks back. We dismantled the block last night and it's melted the nylon oil pump drive, starved the crank bearings, broken up several of the valve casing bolts and distributed them amongst no 3 and 4 pistons.

We'll either sell the Chinook as it is, as it's in excellent condition otherwise, or source a cheap used engine for it to sell as a complete boat again.

4.8 ish size is really what we want, much more room onboard.
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Old 09 July 2008, 17:52   #9
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er here we go again!!! Nos would you like to recommend a 4.8??? Jace, got anything like a Ribcraft 4.8 hanging around???
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Old 09 July 2008, 18:59   #10
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I'm also looking at a valiant 490 with 75hp, i think this might be the better option, unless anybody has any advice against buying a valiant?
I've never owned a Valiant but Ian Parkes was out with us in his old 490 last year off Looe when the weather started to blow up a bit and it did look to be doing rather well. We were easily holding 20-25 knots in quite a choppy sea. I was quite impressed by the performance with 3 people and a load of kit aboard too.

Course, I'd buy a 4.7 Searider, but that's just me
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