prop spec for 6bta 300HP

[Images]

I have 6bta 5.9 diesels 300HP engines in a 1991 380 AC Searay. I have four blade cupped props. My engines are 2800 rpm no load. I can’t seem to generate the rated top end speed I think I should get. I think I should be doing about 20 kts at 2250 rpm’s. I’m only doing around 17 at that rpm. does any have any suggestions on the spec’s for the props that seem to be optimum on the high end.

Topic

[Tony Athens]

Perceived low power

You need to start here and go thru each step in the order they are presented..

Understanding Low Power Troubleshooting

If you cannot perform these tasks, then you need to hire someone who can.. 95% of all low power complaints are due to over-propping if dark smoke is present, followed by simple things like the throttle is not making full throw, inaccurate tachs, aftercooler needs a full service, exhaust design has ruined the turbo,and then list goes on as in the article..

Also–Post good pics of what you engines & engine room looks like and post serial numbers to ID the exact version the the 6BTA you have.

Tony..

[Author]

Replies