Posted by dmrose on 04/25/09 - 9:38 AM
#1
I have my 1985 90hp 3cyl Yammie running great right now. I generally like to cruise around at 4000 to 4200 RPM. My manual says that the cruise range for that motor is 4500 to 5500. I would like to run it harder but I'm afraid to blow it up. A friend of mine explained that these old 2 stroke motors were designed to run at max cruise so pushing it isn't a big deal. Any suggestions?
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Posted by TexasOutrage on 04/25/09 - 12:03 PM
#2
I have a 1995 90hp Yamaha on a flats boat. I typically run at 4400rpm.
The boat is a 20' tunnel hull boat with fixed trim tabs, fiberglass cavitation plate and CMC jack plate....runs in six inches of water.