Bertram31.com General Bulletin Board

Re: Cummins

Posted By: vic Roy
Date: Saturday, 18 March 2006, at 9:33 p.m.

In Response To: Cummins (Greg)

Greg - both the 270 (same as the old 250) and the 330 have a turbo and an aftercooler. The 6BT 210, now 220 hp has the turbo and no aftercooler. I have the 250s and they are near bulletproof. The 300-315-330 get the added hp by running the rpm up from 2600 on the 250-270 to 2800 on the 300-315, and as I remember, to 3000 on the 330.

There is all the information you ever want to know about the Cummins B series on boatdiesel.com. Consensus seems to be that running the 300s like the 250s (2400 high cruise) is the way to go, and underprop them to turn about 5% over max rated rpm with a full load.

Great engines.

UV

Messages In This Thread

Cummins
Greg -- Saturday, 18 March 2006, at 9:03 p.m.

Re: Cummins
vic Roy -- Saturday, 18 March 2006, at 9:33 p.m.

Re: Cummins
Brianb -- Sunday, 19 March 2006, at 12:08 a.m.

Re: Cummins
Brianb -- Sunday, 19 March 2006, at 12:25 a.m.

Re: Cummins ...Sir UV
JP Miller -- Sunday, 19 March 2006, at 9:00 a.m.

Re: Cummins ...Sir UV
vic Roy -- Sunday, 19 March 2006, at 10:00 a.m.

Re: Cummins ...Sir UV
JP Miller -- Monday, 20 March 2006, at 7:59 a.m.

Re: Cummins
JP Miller -- Sunday, 19 March 2006, at 8:29 a.m.

Re: Cummins
Greg -- Sunday, 19 March 2006, at 9:27 p.m.