Ok, first, yes it’s my boat. Not sure why you think it’s not. I have done all of the work since 2004. I posted my data in a prior link, so I am not sure what you are looking for. Engines, transmision, gear, WOT, etc.
Engine’s: 6 CTA 8.3 450 C’s
WOT 2700 Photo-Tac Sorry, had 2675, but that was on the gauge. Not the Photo Tac
Serial #’s:
46077285
46077150
Props: 22×23.845 #3 Cup
Michigan Wheels. Nibral 4 Blades
Prop Pockets
Shaft: Aqua met 22 Dripless.
ZF 280 Transmissions
Drive Type: Straight
Gear Ratio: 1:483:1
I cruise about 22-2300 rpm/s. We have a lift on the back, so the sweet spot varies based wind, tide and so forth. With the tender on the lift, it’s heavy, 23-24 MPH. Your water pumps are on the boat, I think I was probably one of the first from boat Diesel. Even took video on how to do the outboard side and make it less painful.
The survey lists several problems as you are aware.
1. States blown Head Gaskets, both motors. Don’t believe it. As you can see from the video, coolant is leaking down from the front while WOT. Based on my research, which I will confirm tomorrow, there is most likely a leak at the thermostat, as I never have had to add Coolant, Cummins of course, to the engine. No change in Over Flow tank. Cant’ even remember the last time I had to put anti-freeze. There are no oil leaks on either engine. Plan is to just pressure test the cooling system, should be able to pin point the leaks on both motors. Right strategy?
2. WOT. States 2700 Starboard and Port 2567. Spent a lot of money getting the props to 2,700. Normally I use sync when going on plane, but for the Sea Trial, which I ran the boat, I did not. I noticed that the Port cable is stretched significantly, so when I was bringing it up even, the port throttle was maybe an inch farther up than Starboard. This would most likely explain the difference in WOT, so while at the boat, I plan to adjust the linkage, and check the play. I expect to find that the throttle is not reaching the max. I am witnerized right now, so running the boat is somewhat limited for another few weeks unless you believe Punsatany Phil.
3. After Coolers. In the pics you will see the pipes are brown, always have been since I bought the boat in 2004. First thing I did was so the prop work. Since 2008, we have not used the boat as much as we did in the beginning. So some years we had less than 20 hours on the motors. The boat sits in fresh water. The starboard cooler gets cleaned more than port, logistics and once I had the grease on it, didn’t worry as much. I find it hard to believe that I have cooler problems. But here I am limited other than puling them again, even thought the were both out.
4. Turbos. The only problems I have has was when I had turbo lag. it was really in the first one or two years, and I did what you told me to do with Dawn Dishwasher and distilled water. Never really had a problem again that I could tell. I did by gauges to test boost a while back, they are still in the engine room, but connection to the turbo was a problem becasue my lines where not metal. I think you sent me instructions on how attach, but I wasnt really noticing a problem
The biggest thing is my buyer hired a guy who is a CAT guy, and is looking for winter work. I say that because of the heads. Right now my buyer has a list of this and a nice price tag to pay this guy, but I just don’t trust his reports becasue of the head gasket and he did not bother to check throttle travel. He’s not a Cummins guy. He’s a CAT guy that works on other stuff.
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