RE: Design
FF makes a good point about having an EGT. Our boat has one (a single instrument with a dual readout) and it's very useful. It's the only way, really, to know what your engine is actually doing. I'm used to EGTs because of aviation, but it's a very handy instrument on a boat, too. As a point of reference, at 1,700 rpm the EGT on our engines is 600 degrees. At full throttle it is more than double that.
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