BroadCove
Veteran Member
- Joined
- Oct 1, 2019
- Messages
- 78
- Location
- United States
- Vessel Name
- Say Goodbye
- Vessel Make
- Grand Banks 47 Eastbay FB
Good morning, all. In April I purchased a boat with twin Cummins QSM 11s, rated at 661 hp. The engines are 2005, and they had 790 (port) and 815 (starboard) hours. The previous owner had the boat for about 6 years. I have all of his service records, and I followed up recently with the selling broker to make sure there wasn't service performed elsewhere. With that, I confirmed the PO had done annual "basic" maintenance: oil and filters, zincs and impellers when needed, but that's about it. No evidence that aftercooler was ever scoped or pulled, gear cooler was serviced, or other major items.
Since we took possession, we've put nearly 150 hours on the engines. They've run flawlessly. The starboard engine needed about a quart of coolant added, and between the two engines I've added about a gallon of oil over that time. Exhaust is normal, oil color is normal, temps are normal and stable, rpms, everything runs as one would hope.
We're a planing hull, so I'm running at around 2000 rpms. Engines are slightly underpropped, so I can hit the 2350 limit with a normal load (two of us plus regular provisions). I like it that way.
Long story short, in light of the lack of evidence of major service, I've got a reputable Cummins mechanic scheduled later this month. They've got seven days scheduled to do the work, hoping to complete it in five days if all goes well.
For those with these engines, is there anything in particular I should be asking them or looking for? I've read everything on the Seaboard Marine site about these engines, and talked to the Cummins tech that surveyed the engines for me, but this service is a big "investment" and I don't want to miss anything obvious.
Thanks in advance.
Since we took possession, we've put nearly 150 hours on the engines. They've run flawlessly. The starboard engine needed about a quart of coolant added, and between the two engines I've added about a gallon of oil over that time. Exhaust is normal, oil color is normal, temps are normal and stable, rpms, everything runs as one would hope.
We're a planing hull, so I'm running at around 2000 rpms. Engines are slightly underpropped, so I can hit the 2350 limit with a normal load (two of us plus regular provisions). I like it that way.
Long story short, in light of the lack of evidence of major service, I've got a reputable Cummins mechanic scheduled later this month. They've got seven days scheduled to do the work, hoping to complete it in five days if all goes well.
For those with these engines, is there anything in particular I should be asking them or looking for? I've read everything on the Seaboard Marine site about these engines, and talked to the Cummins tech that surveyed the engines for me, but this service is a big "investment" and I don't want to miss anything obvious.
Thanks in advance.