Repowering a 54' Donzi Sportfish

Glad to hear that. Sounds like you really hit the mark with the repower and really cannot ask for more, much better fuel economy and speed, new equipment, everything seems to be working as it's supposed to right out of the box (even props). I bet your family will have a great time on the boat.

Why are we up so late,,, again???

LOLOLOL, took a nap this afternoon in between work. Worked 9am-1pm, came home, ate lunch and took a nap, went back out 4pm-6pm......it's too hot to work middle of the day.

This is funny. Near same here.
Sipping a slow one now.
Shopping for some large A/C junk for our own boat. Not fun.
Fixing to crash finally now. Latter bro..

And I thought I retired..

Sounds like you a achieved the best results possible - exceeding your expectations

If you fill out a speed vs rpm chart, make sure and do a two way run to eliminate current effects.

Happy boating!

Congratulations, that is great news.

This is a good idea, as the motors are new, bottom is clean, etc. I'd also write down all pressures and temperatures. Start at 1000 rpms and do 5 minutes every 200 rpms.

Great job giving her new life. You and your crew did a hell of a job and have much to be proud of.

Cat should have the data on lap-top. Ask them for a thumb drive copy and print out.
Good to compare to in the years to come.

Sad part is, this fine crew is not available to the rest of us. To darn far aweigh...

Pre load this question and have it waiting for you when your back in range;
Is da wifie happy?

Agree. At least you can bribe them with warmth and sunshine.

Agreed. Very worthwhile effort, albeit minimal effort. Will give you a terrific reference material for trips, planning, and you'll be quick to identify the sweet spot for your own vessel's setup. Further, you'll be able to identify problems going forward, be them in the engines or on the hull. I recall my sweet spot was in the low 70% load range, but every boat and setup is unique. Best of luck.

Also noteworthy, I developed a strong opinion that the noise made by my Cats raised fish. I hope you find the same.

The inline-6 C18’s just have a unique mechanical ‘symphony”. Hard to be as smooth as a V engine but they have other attributes that shine in an engine room, especially more space between the engines for the guys that like to check things out themselves.

Final fuel - speed - rpm values on loaded boat? Accepted by Cat? Son going to Cat school soon?

Hate to see the end of this thread because I've thoroughly enjoyed.
Happy for you & the outcome.
Outstanding

Me, too.

Those are GREAT numbers. I'd be extremely happy with the results compared to what you had with the 12v92's.