Cummins Marine Diesel Repower Specialists › Forums › All Other Marine Diesels › Volvo D4 which test do you trust › Reply To: Volvo D4 which test do you trust
Tony Athens
Engines: QSB 6.7 550 HP
Location: Oxnard, CA
Country: USA
1) Vessel speed now at 2400 (WOT) vs. when things were good?
2) If the vessel is not on plane at 2400, is it possible to remove a lot of weight just for testing purposes? Super low fuel, everything off the boat..
3) Dark smoke– This is important–Remove the exhaust elbow/mixer ( or ??) and let me SEE inside the exhaust turbo outlet.. Clear & in focus from about 6-12″ away
4) Is the bottom super clean along with the props?
5) Was this change in performance over 1 day, a week or ??
6) Is this a in-line drive, out drive, or?.. Post the actual engine rating/RPM (there more than one version of this engine )
Tony