CUMMINS

Craig Mac · Post by **Craig Mac** » Sep 12th, '08, 10:48

Going with a friend to sea trial a boat with QSD9--380HP---what should be the WOT RPM want to confirm she is propped correctly.

Craig Mac · Post by **Craig Mac** » Sep 12th, '08, 12:09

Typo QSB9-380 HP

dougl33 · Post by **dougl33** » Sep 12th, '08, 15:00

Craig,

I don't think there are a lot of guys running the QSB's on this site. I looked at both Boatdiesel and Cummins' site. I'd say to make sure they can hit 3000rpms in gear @ WOT with a full load.

Craig Mac · Post by **Craig Mac** » Sep 12th, '08, 15:24

Thanks--any idea how fast you should cruise them? 2500?

dougl33 · Post by **dougl33** » Sep 12th, '08, 15:49

I think you could cruise them at 2500-2600rpms. That's just a guess. I'd head over to boatdiesel.com to educate yourself prior to the sea trial.

In Memory Walter K · Post by **In Memory Walter K** » Sep 12th, '08, 17:36

Usually 200 rpm's under wot....at least that's what the rule is with the 6b's.

bertram31.com

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