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Old 28 June 2012, 15:20   #1
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Country: UK - England
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Force outboards

Hi all as a relative newcomer to the Rib scene,i have a narwhal 4m with a johnson 40hp on but have just aquired a Avon sr5.4 a bit rough but a work in progress for the next few months looking at a 90 plus power unit and have seen a couple of force units for sale whats the thoughts and opinions of the experts please as to quality and reliability

regards Geoff
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Old 28 June 2012, 15:22   #2
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Country: UK - England
Town: The wilds of Wiltshire
Boat name: WhiteNoise/Dominator
Make: Ballistic 7.8/SR5.4
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Run. Fast. Ancient and out of production for many years.

Force


SR5.4 is rated for MAX 90hp anyway.
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Old 28 June 2012, 15:34   #3
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Cheers for the reply there was a 90 for sale at Bill highams seemed like right money so was interested
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Old 28 June 2012, 15:36   #4
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Run. Fast. Ancient and out of production for many years.

Force

Agree 100%, depending on age/size they are either Chrysler engines designed in the 60's or Chrysler engines designed in the 60's and tarted up by Mercury in the 90's

You can find parts in the USA, but will struggle over here. There are much better engines out there.

EDIT

Just seen your next post, I have been using Bill for a long time, if he will give you a decent warranty on it and you budget for some repairs, it doesnt look like a bad price. But I would still run away as fast as my short fat little legs would carry me :-)
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Old 28 June 2012, 15:42   #5
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Thanks i will keep my eyes out for something a bit more modern the boat came with a old mercury 50hp four cylinder but we will be going out from the east coast and i feel that may be underpowered and it looks like it may have powered noah,s ark
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Old 29 June 2012, 06:07   #6
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4 Cyl 50 Hp merc? Of a similar design age to the Force.

Also your Merc is a 4 cyl 50 it is likely named by it's crank HP, so you are probably only looking at around 45 gee gees at the prop. On the plus side, if Bill H has another, you could probably run "twin 50s" and stay within the transom limits
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Old 29 June 2012, 10:53   #7
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Country: UK - Scotland
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Boat name: Sula
Make: Ribcraft 4.8m
Length: 4m +
Engine: Tohatsu 60hp + aux
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Your first name isn't Luke is it?

A lightweight Yammie is the perfect match for your 5.4. Only trouble is everyone wants one. That said they do pop up occasionally, but you'll need to have the cash ready, be prepared to travel and see it running.

Worth checking the compression on all cylinders, check all electrics work including trim, and that the tell-tale is nice and strong. The owner of this one says it chugs a bit from cold. Could be the carbs just need stripped and and balanced.

90's model here on EBay. Yamaha 90hp outboard on Glastron Bow Rider | eBay
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Old 29 June 2012, 12:25   #8
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Your first name isn't Luke is it?



90's model here on EBay. Yamaha 90hp outboard on Glastron Bow Rider | eBay

We had that model from new on a ski boat in the 80's, it wiped the floor with every other 90hp out there. Fantastic engine, in addition to the comments I would also have a look at the gear lube, they munch gear boxes if its not changed and checked.
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Old 29 June 2012, 14:00   #9
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I would also have a look at the gear lube, they munch gear boxes if its not changed and checked.
+1

Pull the lower drain plug slightly. If it comes out like mayo, then it's emulsified and there's water contamination.
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