just out of interest, what is the max RPM that the old evinrudes are meant to run? <br /><br />I know that later model engines can run to 6000, but my factory manual says 5000. (my manual is for 1971)
For the Big Twins, it's been 4000-5000 since the '56 30hp. I don't think they ever bumped up the 43.9CI engine, even late in the 70s.<br />I forgot to mention, the pulses are negative. <br />(and this has got me back on to that project. I just fitted the 4hp with a test lead. I've been meaning to build a "black box" so we can use a modern tach)
Well, it's just a hobby for me. So I'm a little out of my league especially with analog stuff.<br /><br />I'll post a new topic tomorrow with what I've got so far and where I would like to go. I really could use some opinions & advice from people who know this stuff better than me.
<br />(and this has got me back on to that project. I just fitted the 4hp with a test lead. I've been meaning to build a "black box" so we can use a modern tach)
