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Old 18 September 2007, 12:31   #1
Member
 
Country: Canada
Town: Bella Coola
Boat name: Water Rocket
Make: Polaris
Length: 9m +
Engine: twin Yamaha 150 hp
Join Date: Nov 2003
Posts: 123
How our Engines did this summer.

Hi Gang,
First off it was a great summer to be out on a boat for 85 days. Cruising around the coast of British Columbia Canada.
The main engines in the big boat ( 8V71 Detroit diesels x2) ran prefect as long as you kept feeding their habits-oil and fuel.
The Deutz powered gensets never missed a beat.
The twin 150 Yamaha 4stroke outboards on the Water Rocket RIB were excellent and what a blast to drive.
Our larger sport fishing boats have 115hp. Mercury's and they ran and ran.
But the brand new Yamaha 9.9hp trolling motors ( with electric choke) "made oil" and would foul out the plugs. I figured out the problem and after the motors were warm I'd disconnect the wire to the choke and they would run fine--back to the dealer for them.
Our 2 smaller boats with Honda 40hp where what I'd judge all other motors against- great motors no problem ( they are on year 6 of hard use)

Which brings me to our 2 mid size sports fishing boats with brand new 60hp
Mercs- fuel injected easy starting but on long runs they would puke out all the oil- they ran smooth but not for long with out oil.
The 60hp Mercs would lose it's oil but we could not see where it was going.
The plugs were clean.
I pulled one 60hp. off the boat and had another older USED one sent up( at great expense and hassle) and it developed a problem of the top cylinders fouling out but we limped it thru the rest of the season.

So the larger Yamaha and Mercs worked fine but the smaller Yama's and Mercs just didn't make it .
As I said before the Honda's are our work horses. Big Yamaha are smooth and powerful.

my two cents Canadian
hank
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Old 18 September 2007, 19:05   #2
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Country: UK - Wales
Town: swansea
Boat name: Too Blue
Make: BLANK
Length: 8m +
Engine: Suzuki DT225
Join Date: Mar 2004
Posts: 12,791
Sounds like you had a good time - what a life. How about some pictures??? Did you post before about the big boat - can't remember!!!

Are those Detroits thirsty compared to modern engines?
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Old 19 September 2007, 19:49   #3
Member
 
Country: Canada
Town: Bella Coola
Boat name: Water Rocket
Make: Polaris
Length: 9m +
Engine: twin Yamaha 150 hp
Join Date: Nov 2003
Posts: 123
Well the screaming Jimmy Diesels do burn their share of fuel
2X 8V71 GMC 2 cycle diesel
71 cubic inches per cylinder 568cu in 250 hp @1800rpm each
old rule of thumb for Jimmys engines
1 gal per hour per cylinder (16 gph for us)
pushes the big boat while towing up to 7 skiffs at 9+ knots
Old school engines but feed their habits and they will run a long time.

-the Jimmy's are also known as the Green Drippers - in like if they aren't dripping oil they are out of oil
excellent motor for getting parts at least in North America if needed

Our Water Rocket has a Radar and Plotter?Sounder with the plug in charts. After going over the paper charts and plotting the course
we got to explore the Goose Islands group a few miles off the coast in the middle of BC. Whales, sea lions rocks lots of interesting floatsum
on the wind swept beachs.

I got some good dives in.
On one trip we had a filming crew on board and I got to find the sea life and crabs for the hero to "show to the camera".

We have a Leader Board on the boat you get your name down for the largest fish caught.
I went out one morning and caught a huge 28 lbs. Ling Cod .
So I got my name down 30 minutes later one of the guests caught a 28 1/2lb. Ling.
A few Chinook and coho salmon also found my bait -
so beside my 30 minutes of fame I had a nice big box of frozen fish to take home at the end of it all.











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Old 19 September 2007, 22:46   #4
Member
 
Country: UK - Wales
Town: swansea
Boat name: Too Blue
Make: BLANK
Length: 8m +
Engine: Suzuki DT225
Join Date: Mar 2004
Posts: 12,791
I will say it again - what a life. Yes I remember you posting the pic of the mother ship - a lovely old tub - just my kind of boat!!!
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