Upgrading Mercruiser 165 to throttle body

[Ike]

My 1972 Sea Ray has a Mercruiser 165 (GM 250). I had the Rochester 2GV carb rebuilt 4 years ago, but it still has some problems with flat spots and stalling, all of which I am familiar with and can work around by playing the throttle. But it is getting worse and I have been looking at replacements. (this is the OEM carb and is 44 years old) Of course I can just buy a new carb and drop it on and problem be gone. However, I got to overthinking this as I am wont to do (I'm an engineer, LOL), and was looking at throttle body fuel injection. The throttle bodies are cheap, but the rest of the package isn't.

Have any of you done this on an old inboard engine. If so how complex is it? If so does it significantly improve the engine performance? I am not as interested in HP improvement as in smooth running without flat spots, stalling etc. Of course better fuel consumption would always be welcome.

Any constructive thoughts on this would be welcome.

 

[hottoddie]

Replace the carb or have it rebuilt by someone who knows what they are doing. Converting to TBI is chasing good money after bad and do nothing for resale.

 

[Ike]

Thanks. That is what I am planning to do.