[Stripedo]

Looking for real world experience as far range goes on the 42 with the 660 Cummins. Thanks in advance!

[jgordon]

Looking for real world experience as far range goes on the 42 with the 660 Cummins. Thanks in advance!

I know this is an old thread but I just purchased a boat with this setup.  I had a great trip home but had to winterize it when I got back to port since it was getting cold at night.  I am installing EGT sensors and am looking for any information I can get to understand the best way to run the engines.  Looking for engine reliability as the priority followed by economy.  
Do you mind providing some information on how you run the boat?  Did you ever get your range questions answered? 
Thanks
Joe

[hiccup]

You're smart to be adding EGT sensors to these motors. They were shipped over-propped from the factory and the dry turbo & exhaust manifold design makes the motors extremely sensitive to overload. Make sure you're EGTs are in check, the engine room isn't overheating, watch for exhaust leaks, and if you want to really gear them towards reliability, underprop them!

[Hifirush]

Congrats on the new boat! As mentioned above, under propping is a good way to make your engines last a long time. Check out Seaboard Marine's "Tony's Tips" and the forum. He is a wealth of knowledge on Cummins engines. He likes to run them conservatively and is looking to get the most life out of the motors. sbmar.com