Originally Posted by Sailor of Fortune
The 8.2's were pretty quiet. Mine were 250 HP versions. To say the Cummins engine is loud, is a new one on me. The 6BT is the 6-71 of the new millenium. Thousands of them in all kinds of service grinding it out day in day out without problems. The 8.2 never did anywhere close or it would have had a production run longer than a good lunch hour.
It's true that I didn't have proper soundproofing for my 6BT 300hp, standing over it in a pilothouse and all, so I guess i gassed myself. Too many of them running around in obnoxious over-squared pickups, tormenting me at traffic lights...
Methinks that 8.2's are reliable Detroits, like your cited 671, a WWII tank engine. They did have a cooling problem if an air pocket wasn't cleared, but in later versions you have a turbine-type 4 cycle howler Andy Granatelli would have liked.