Re: Blue Note repower thread
Jim, Look forward to the update and photos, please! What about the engine room itself when your old motors are pulled? Awlgrip, Imron, rewire, movement or relocation of any mechanicals? Enjoyed my tour of your boat the other week and look forward to a ride with the new motors.
Re: Blue Note repower thread
Actually, I painted the engine room when the repower was done years ago. We will probably just clean up what's there, and do selective repainting of the areas that need it.
It's always the "while-you're-in-theres" that get you on a job like this. For example, I think that the shaft alley bearings and strut bearings are okay...but if they turn out not to be, they get replaced this time around. The DC wiring and all the plumbing should be okay. If I can afford it, I am going to ask for those fancy blue silicone exhaust hoses. :D The genset and other mechanicals are pretty much where they ought to be and AFAIK they are all okay. There will be some cleaning up, no doubt, but hopefully not a lot of relocation to do.
In my boat, as in a lot of ours, things have been added along the way. One of the things that may happen is that ZMI will take a look at everything that needs to go back in there, and come up with a more-user friendly way to do it all. For example, the service points on cummins diesels can be set up so that all the oil and filter changes can be done from the middle of the engine room. Given my increasing girth and the small size of the 36C ER, this would be good. Also, there is an oil-change system, genset fuel filter, mains fuel filters, etc, that all have to go back in there. They will probably have suggestions about how to organize this so it is easier to work with. Fine with me. But there's only so much you can do with a small space like that, and all these mechanicals.
Re: Blue Note repower thread
Jim what are you doing about packing glans staying with what you have or dripless if you didn't have them already can't remember?
Also the Big question do they have a plan yet for exhaust are they going to have dry riser's??
If not I would do surge tubes and flapper's.
Also change the front mount next to the pump like Athens say's, I did not and already regret it :o .
Re: Blue Note repower thread
Dan, when we put the Caterpillars in we installed PSS shaft seals. They have worked fine so far; I will just have them review those and make sure everything is okay.
We are looking at the motor mount issue; I have a photo of one of Tony's mounts, which cradles the front of the engine and allows you to change the seawater pump. His concerns are well-founded.
ZMI wants to have elbows made of Inconel, which they like for longevity in applications involving hot seawater. I have a drawing from Slane's group that shows the piece they use for this application. We'll see how this all works out. I am not a fan of flappers, but may be willing to use them if need be. The drawing that I have shows a dry riser with the injection point on the way downhill. There also needs to be room for pyrometer probes as well.
Re: Blue Note repower thread
Sounds good Jim
I too have the PSS seal the paper work says change the boot every 6 years, How old are yours now might be a good time since your there.
Exhaust sounds like they have a good plan and you won't need the flappers.
I already did my mounts prior to finding Tony's comments on the mount :mad: . But I only have a few small things the rest I am happy with and I can't wait to here your comments on the difference between the two engines ;) .
Re: Blue Note repower thread
Jim: I have put comments in several threads about my stringer problems when I had the Cummins 300s installed. The hull was flexing from the high torque from these engines and as a result the top of the engine would move about 2 inches. The engines were removed and the stringers were reinforced and a couple of cross grids added. No problems since the repair. I believe your Blue Note is a couple of years younger than Samurai so you may not have the problem. I know you will like the Cummins in that hull. Good luck with your project. Bob
Re: Blue Note repower thread
Jim,
As far as the exhaust. I got all the figerglass pipe, silicone hose , clamps and such from Oceana. I even ordered 6 inch surge tubes, and made everything work.
As far as the Athens engine mount , I have not seen these.I will suggest that you use the Caterpiller engine mounts and not the Cummins , unless they fixed them. I had all mine replaced with Caterpillers.
Changing the impellers is a PITA on the cummins, as well as the water pump. but it can be done just takes a a little time.
Good luck.
Also I am not sure where your genset is, But I placed mine in between the engine aft. Freed up some romm for toher things.
JW
Re: Blue Note repower thread
JW, my genset is already aft between the stringers. The exhausts may work as they are; they are 6" FRP tubes, probably from Trident or whoever makes them...the Athens engine mount avoids the issue of being unable to change out the seawater pump without removing the engine mount.
As far as the torque goes, the peak torque on the 3116s is nearly 800 ft/lbs, so it can't be that different. I have not noticed hull flexing but I will watch for it when we seatrial the boat.
Re: Blue Note repower thread
Jim,I'm pretty new to the forum, but also have a series one 36C (1977) repowered with Cummins 330s last year at Tolchester here on the bay. I have lots in process of engine room pictures if you are interested and I can figure out how to post them. Would also be glad to share lessons learned, costs, and discuss pros/cons of work done on Baby Grand. We keep her at home on a creek off the lower Potomac. You will love the repower - like a new boat! Regards, Bob Kuzmick