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Old 03 April 2006, 05:06   #1
Country: Ireland
Town: Co Clare
Length: 4m +
Join Date: Jan 2005
Posts: 97
Yamaha 80hp 4st

Hi All

Any opinions on the above good/bad ect ?.


TimMcC is offline   Reply With Quote
Old 03 April 2006, 07:07   #2
Simon B's Avatar
Country: UK - England
Town: Leicester
Boat name: Vixen
Make: Ribcraft
Length: 6m +
Engine: Suzuki OB 175
MMSI: 235071839
Join Date: Jun 2004
Posts: 1,621
We have the 100, its the next one up think it uses the same block(?) It is a suberb engine, very smooth across rev range, reliable and so far very economic. Usual good standard of engineering from Yam.

A couple of points; the drag link sheared, this propogated from a crack when it was cold formed in production and dont dismantle the fuel pump if you have the spark plugs out! Those M6 nuts arent captive and are stainless (non magnetic) and are devils for plopping into the pots!

New boat is here, very happy!
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Old 03 April 2006, 11:47   #3
Country: UK - England
Town: Clitheroe
Length: no boat
Join Date: Mar 2006
Posts: 77
Yes we have the 80hp yam, very smooth, and yes it is the same block as the 100 with a different manifold and ECU.
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Old 13 April 2006, 18:34   #4
Country: UK - England
Town: cornwall
Boat name: nothing
Make: rib eye 430
Length: 4m +
Engine: tatsu 50
MMSI: 666
Join Date: Mar 2006
Posts: 1,914
What sort of fuel economy do you get.

Iam thinking about a bigger boat between 50 and 90 hp 4 stroke and the MPG matters a lot to me and wil be a deciding factor in what I end up with .
ian parkes is offline   Reply With Quote
Old 14 April 2006, 06:39   #5
Country: UK - England
Boat name: SOLD
Length: under 3m
Join Date: Jun 2004
Posts: 794
We had a 100hp on a 560 Avon flat out just under a litre a mile
I have had three Yamaha based on my time with the 100 cant say more than that
Roy Smith is offline   Reply With Quote
Old 20 April 2006, 04:22   #6
Country: UK - England
Town: Felixstowe
Boat name: WhaleOilBeefHooked
Make: Ribeye
Length: 5m +
Engine: Yamaha F80
Join Date: Nov 2004
Posts: 66
Have a 5m Ribeye with Yam 80HP 4-stroke.
With 2 adults and 2 children can do 30-40miles cruising or a whole day w/boarding and towing inflatables..never use more than 30 of fuel.


Are you part of the Solution or part of the Problem?
Yuley is offline   Reply With Quote

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