twin engine

im thinking about buying a 340 with twin 454’s my question is can you run on one motor to save gas

Hi. I bought my 268 with one of the engines removed due to water in the oil. The PO had removed the sea water pump and hoses. I have all of the parts. I went ahead and removed the 2nd engine and had them both rebuilt. I am at a loss on how to reinstall the sea water system I have 2 165's with...

I have a twin setup with one battery dedicated to the generator and starboard engine, and the other engine connected to a two group battery set. Yesterday I started my starboard engine and then tried the port engine. Batteries were dead (another issue to fix!). Anyway, I tried to use the...

I need serious help, from somebody who knows Merc 260/5.7 carb engines inside and out, or at least has knowledge and experience working with them. Knowledge of these as twins, in the Amberjack configuration would be even better. I've got a 87 270 Sportfish (Amberjack flybridge) with twin...

Hi everyone, I'm thinking about buying a boat with twin 5.7L engines. Boat looks great, but I have one nagging issue. The engines don't have the same amount of time (450 vs 550 or so) and the seller is saying it's because one engine was turned off while idling down the river. Is this normal...