Quote:
Originally Posted by Bigshrimpin
Propped to hit max rpm 300 hpdi on a 247 Grady voyager is 4000rpm 14gph
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one thing I can say is that running 12 - 14mph 2500 - 3000rpm in heavy seas . . . you burn a ton of fuel like 1mpg.
Here's some performance bulletins.
http://www.yamahaoutboards.com/sites...c-z300turd.pdf
http://www.yamahaoutboards.com/sites...5-z300txrc.pdf