kolyo
Well-Known Member
Anyone know what model this is?
PLANING BOAT PECULIAR USE QUESTION
- Thread starter kolyo
- Start date
ontheplane
Well-Known Member
Do you mean what model boat or what model engine?
kolyo
Well-Known Member
Sorry, my bad
. Engine model?
. Engine model?Ferris
Well-Known Member
I have seen a number of bayliners, very often the 2556, converted to diesel by using a marinised Izuzu 2.8 out of the Trooper. I suspect the marinization was a lancing marine kit. Also the coupling etc. was available for bravo drives also. The power is 90-100hp? Mostly these boat seem to be inland waterways based.
Displacement speeds only obviously and I think I would leave the current motor where it is
Displacement speeds only obviously and I think I would leave the current motor where it is
ontheplane
Well-Known Member
Whilst I'm still in the leave current motor alone camp. You could buy a cheap old Ford Transit engine and get a Lancing Marine marinisation kit.....
kolyo
Well-Known Member
Funny enough I owned a Trooper with the same engine years ago. Bulletproof and undemanding! Thanks for the input.
kolyo
Well-Known Member
Thanks for the suggestion. I may very well join the leave current motor alone camp if Lancing Marine fail to convince me that some of their diesel engine swap kits will be suitable for my particular needs..
Whippersnapper
Well-Known Member
This is an important point. Without the big iron lump the boat will be stern high. it does seem the obvious choice if you aren’t to just sell it and buy something else is to keep the boat as is and just tootle about. I can’t imagine a 30 year old petrol v8 is worth anything much anyway?
Whippersnapper
Well-Known Member
If you change to a diesel you will need a new leg as the gearing is different because the diesel doesn’t rev as high. Also diesel legs are stronger to handle the torque.
kolyo
Well-Known Member
I definitely want to keep the Bravo 2 and would go for a swap with a smaller/ lighter diesel ONLY if direct drop in is possible. I am told it is.
As for keeping the COG and the weight I'm told it can be done by adding the right amount of properly distributed sand bags. The guy in the outboard conversion video I posted did it quite successfully.
kolyo
Well-Known Member
You see, I looked and looked and looked and looked and looked... to find a different boat but none came even close to the 2556 as far as our needs and aesthetic demands are concerned. if only the 30 year old 454 didn't need so much maintenance and time wasted on waiting for replacement parts to arrive. BTW, here in Greece such an engine in running condition could fetch 2 - 3000 euros.
ontheplane
Well-Known Member
I still think take engine out and a really massive service and pop back in would be far cheaper than an engine swap. Get an expert to tell you all the bits likely to fail and change them - still won't cost as much as an engine swap unless you can get a small diesel very cheaply
bowler
Well-Known Member
A good friend of mine is planning on putting a 1.9 rover diesel in a Bayliner 2255. All DIY marinizing, no kit as such. He has done this many time before and is convinced it will plane. I am sceptical. Alpha 1 leg.
He is a seasoned mechanic and works on everything and anything.
Will be interesting if he gets round to it...
D
He is a seasoned mechanic and works on everything and anything.
Will be interesting if he gets round to it...
D
kolyo
Well-Known Member
I may have found the best solution after all. A very experienced fellow 2556 owner has convinced me to keep the 454 but swap the 12 x 12 OEM Bennett trim tabs with 12 x 24 ones. By doing this he was able to stay on plane down to 7 kts, resulting in quite a nice fuel economy plus the all important to me ability to drive the boat at semi displacement speeds without the ploughing effect. If I could achieve this my problem will be solved.
ontheplane
Well-Known Member
That's a good idea - is that 12" long (out from the boat) x 24" wide (across the transom) or the other way around.
I've often thought that larger tabs at low speeds were a good idea - I had a woefully underpowered Fairline Weekend 21 and fitting tabs helped a lot with that - I often think I should have fitted bigger tabs to it - it would have been better still. I have often thought making the tabs longer (as in waterline length) would improve their effectiveness no end.
I've often thought that larger tabs at low speeds were a good idea - I had a woefully underpowered Fairline Weekend 21 and fitting tabs helped a lot with that - I often think I should have fitted bigger tabs to it - it would have been better still. I have often thought making the tabs longer (as in waterline length) would improve their effectiveness no end.
scottie
Well-Known Member
See post 7
kolyo
Well-Known Member
12" long x 24" (or as near that as possible) wide
kolyo
Well-Known Member
I don't see it as an imperfection if the larger trim tabs will allow me to drive the boat at semi displacement speeds while remaining on plane. Quite the contrary as I've outgrown the temptation to dash to a destination. Although I wish I could say the same for some other temptations
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ontheplane
Well-Known Member
Or would 24"x24" be even better - my logic being you are effectively increasing hull length, plus if you mount the rams in the same place, for a given deflection at the tip (3" say) you only need half the trim angle? Or is my logic badly flawed there?
kebab
N/A
Dream on. A doubling of the trim tab size is not going to turn a boat which likely planes at about 12-15kts currently into a boat that planes at 7kts. The max hull displacement speed of your boat is around 6kts so a 7kt speed even with your new tabs fully down will just be a very uneconomic displacement speed and in fact might even make the boat use more fuel at that speed because of the extra drag
