Captain Jaxon
Seaman Apprentice
- Joined
- Jul 24, 2010
- Messages
- 30
Re: can you convert a carburated motor to EFI?
Yeah I don't want to get silly about this. Reliabilty is a huge part of my decision making process. If I wanted to build a real high output motor I don't think this is the boat for it. Great advice, thank you.
To op, you will NOT see any HP increase by just adding TBI system. Fuel injection was developed for the purpose of economy and cleaner pollution not HP gains. FI when properly done it will cost more than a used big block. You have to not only have to change over the carb but the whole fuel delivery and return system, electronic engine control module and proper tuning etc,etc. MPI (multi port injection is even more involved as it will require swapping manifolds, timing components etc, etc. Turbocharging will most likely melt your boat from within but a supercharger will double the horsepower output for every 14.7 pounds of boost, on a used motor that is a big gamble since there will be no asphalt for the pistons to bounce off of when she lets go. Beside adding boost will definitely increase your fuel consumption. As others said changing the motor is best way to gain performance. A merc 5.0MPI will put out 260 HP and same VP will do 270 prop horsepower, no solution will be cheep. For the special occasions where you need to impress someone just get NOS installed, that will be like getting extra 150 HP at a push of a button - this last one was a joke and please don't add explosive gas to your boat.
Yeah I don't want to get silly about this. Reliabilty is a huge part of my decision making process. If I wanted to build a real high output motor I don't think this is the boat for it. Great advice, thank you.