Re: Need opinions on the Evinrude 300hp V8
Cobia,<br /><br />I'll throw in my $.02 worth.<br /><br />1. There is nothing really exotic about the <br />V-8. It was based on the V-4 and V-6 engines that preceeded it.<br /><br />2. I would not recommend an electric fuel pump in a boat. If you break a line, the fuel will be pumped into the boat. The standard fuel pumps are more than adequate, just make sure they are producing what they are supposed to and the fuel system is free of restrictions.<br /><br />3. RPM. "Average load" means what you usually have your boat loaded with: average number of people, average fuel load, average gear. <br />You cannot set up a marine engine with a speedomter, a tach. is absolutly essential. What DHadley was telling you is that the engine should operate at 300-500 rpm. of where the rev limiter is set. The dealer can tell you this. Essentially, this engine does not like to lug, it likes to rev.<br /><br />4. 87 octane fuel is all that is required. Higher octane fuels tend to build deposits in the combustion chambers that cause just what you do not want-detonation. Essentially, higher octane fuels turn an engine (that doesn't require it) into an octane junkie and, you can't hear an outboard "pinging".<br /><br />Outboards run relatively cool by other engine standards. Plus you have the combustion chamber cooling characteristics of the oil in the fuel.<br /><br />5. I've always had the best luck with Champions in OMC's. If DHadley says use them, then I would use them.
