hey all i have a 27ft fletcher v hull with fixed surface drive and single yanmar diesel 440 running about 60mph i was thinking of upgrading to twin 440s on fixed surfacedrives
would the xtra weight kill the boat
or is twin fixed drives adviseable
i would like to hear your what you guys think and what kind of speeds i would get
should i or should i not
o the current all in weight is 5000lbs
I would imagine the cost of converting would be prohibitive.
Why not just put a 700HP 540 in it and enjoy?
Yes, but probably not at 80+ mph.
700 hp by cca 5.500 lb will be probably 85 mph or more.
I am hear, that two classic surface drives are the best of the best, but one it is "murder" for fast boats.
Last edited by sinus; 08-07-2010 at 01:00 AM.
thanks for your replys guys
i had thought of one big v8 but at todays gas prices over here is $10 a gallon
the fixed drive im using at present is brilliant at low speeds tho anything over 50 in a chop becomes hard work
the diesel engine is 1000lbs i can cruise at 50mph for 20miles and use 5 gallon of diesel witch costs less than $4 dollars a gallon
Well you know you'll have to do a lot of transom work for twins but I say go for it. You could drop down to 370s and save some weight too.
Alum Metal Fab
Custom Marine Sales
Dave's Custom Boats
Diamond Performance Parts
Double R Performance
Elton Porter Insurance
Fastboats Marine Group
GGB Exhaust Technologies
Grand Sports Center
Ilmor High Performance Marine
Lake Cumberland Marine
Lake Havasu Boat Show
Marine Technology Inc
McLeod Design Group
Performance Boat Center
Performance Marine Trading
Potter Performance Engines
Ron Sporl Performance
Speed and Custom Marine
Total Dollar Insurance
Teague Custom Marine
Wake Zone Marine Insurance
Young Performance Marine