Looking at buying a single carb new motor set up making around 600hp... With some tweeking... My merc 500efi's could get close. I have a triple 500 set up in my 47 fountain. If i switch to single carb motors... Will i show any gas savings? Will it effect resale value up or down?? Any suggestions are greatly apreciated!!

the EFi's will be better on gas , don't go backward's to carb's

mike

that was my thought... just seems that there are a lot of single carb options out there that look pretty good right now with the HP ratings and gass consumption. If I am down in the middle of the bay... I can fix a carb motor with a few tools.... the EFI?... entirely different bag of tricks.

My hp500EFI's have been very reliable, start any time any temp.

Why would you be worried about fixing a motor on the water when you have 3?

I understand your worry, I used to think the same thing a long time ago when I got my first injected bike. One season of mountain riding changed that.

Injection is great, what percentage of time do you think you would have a electronic failure, that a carb motor may be better to work on compared to run time without failure.

All you need to get a 500efi a decent bit over 600hp is a good set of AFR heads and some custom cams from Bob Maddera. (RMbuilder on here) He knows just how to do it . Losing your EFI would be a mistake. Most buyers of large boats like yours want stock power that is reliable. My 500efi (that is now a 540) made 693HP on the dyno. Jeff Wurl