Nice job, Fossil! I hope to finish mine up this weekend.

(By the way - My super-mega twin battery setup only cleared the starboard right bank headers by 3/8"! :eek: )

Crapper tank
 

We were thinking we were pretty smart guys putting the crapper tank alongside. Dan built a nice tray square and plum.......touched the header when the starboard motor was installed..crap. So we made a sliver wedge to tilt it a little away from the header. I put some foam under to support the center of the tank. It'll work....more news tomorrow..sea trial. I left the hinged floors out. It gives more access to the front I think.we will see

Amazing how well everything clears when the engines are sitting on the shop floor, isn't it?? The bilge looks so big....

it kills me that you have to put the Holding Tank in the ER ..Just seems there would be room under the cockpit floor to the starboard side of the fuel tank ... with the Vacuflush does the tank have to be downhill hill from the head ? I have even thought about under the Gunwales on the side storage area ...it would have to be a thin tall tank though ... shame to mess up all the art work you guys have done with a box of crap ......:cool-smiley-011:

Sea trial
 

WooooHooo....95 first pass WOW. Amazing difference in handling. Turning out. Smooth and quieter than the 525's

how fast before the change? What year again is your boat?

95 is BOOKIN'!! Nice to see big-time results from a big-time project, isn't it?

Congratulations!

Wow... That transom shot is freaking awesome!

05 382 w/gen & ac....the floating condo. 525's 77~78 tops.

congrats on a great sea trial. looks like you did an awesome job installing the 700's.:evilb::ernaehrung004:

That transom picture looks greatttt.... 95 out of a 382 isn't bad either!! Congratulations!! :cool-smiley-026:

nice work!:drink:enjoy

so fossil fuel! still having fun or fixing the boat?

Still runnin
 

Still running great. I changed drive oil and after 25 and 50 hrs it was still clean. XRs were always one surprise after another.

how's fuel consumption compared to the 525?

Merc said it would be about the same, I guess it would be if I did not run it at 85~90 so much. It seems that it is still about 1 gal per mile. 80 GPH at 80 MPH. I get there quicker but do use more gas.....with the price of Diesel me thinks 91 is a bargain.......

Soot on the transom went away with the 3rd tank of fuel. Transom is cleaner that the 525's. I do have a small leak that is driving me nuts. It seems to be coming from under the transmission and only when running 50+, I'm thinking somthing in the raw water inside the gimble housing or transom assy ?????

Is this leak water or is it another fluid?

Its salt water for sure. Only at 50+ and it seems worse when its a little rough. I thought transom assy but it does not leak sitting, transom is out of the water at 50. I can see some staining under the inside transom assy ring. But we cannot see inside the transom assy where the transmission sits.??

Where does the raw water get picked up on this setup? Maybe this is a water pressure issue? Do you have pressure dump valves installed? I fixed a couple leaks and a overheat issue after installing the Merc pressure dump valves in the raw water lines.

OK. This is a STRECH but what do you think. In rougher water I'm into the tabs a little more, the tab down creates way more splash and churn under the swim step. The bilge pump holes are on the underside of the hull in the swim step support as on any other 382. Do you think they could be blasted with enough spray to run back into the bilge ?? I'm lookin everywhere here. Next trip I'm putting corks in all the holes Just to see???? Pickups are on the drives sorta like bravos

As I asked do you have pressure dump valves and water pressure gauges? At the speeds you are hitting you can create some serious water pressure buildup in your raw water lines causing things to leak. I blew two water pumps and had other leaks until I put the Merc dump valves inline before the water pumps - after that everything was good. This is a common problem for high speed boats. My boat only did 80 so yours is probably creating even more water pressure. Could come through your bilge pump, but not as likely - easy to test though as you said just plug the holes and go for a run.

A stretch but not impossible. On a friend's new 350 SS this summer, with the right combination of tabs and passenger weight we had water shooting up into the cockpit from the port floor scupper. The rubber flap in the thru-hull must have been forced open. Weird...

Do you have a sea strainer ? You may need a dump valve on that to.

Your water impellar per the datco engineer's is pumping 35 gallon's per minute at 3,500 shaft Rpm's after that it pretty much cavitates and maintain's 35 gallon's per minute.

However as you reach 100 mph and depending hoe efficient your water pick -up's are it turn's into a presurized system with a capability of forcing 50 gallon's per minute through and past your cavitating impellar.

Mercury has there valve which I think is set at 25 lbs. but that is for your engine block. and furthur research show's 18 lbs is Ideal for the block. But somtimes other blow off lines need to be added to places like the intake manifolds etc. where pressure is building.

Some friends of mine in the racing world running cat's with lambo's running around 170 mph. did a lot of research with data recording info. At one point they could blow the bottom of the cast stainless steel sea strainers right out if the boat aired out and re-entered. Found out in testing they had up to 2200 psi in the sea strainer.

Then is it water pressure or air pressure ?? Either way it was a problem. Everything went to hard pipe. Blow of valves were added to the sea strainer's etc.

Guess I'm saying don't under estimate water pressure at those higher speeds even though your a long way from 170 mph.

Jon

I do not have pressure valves. Merc has different sizes of pickups for the NXT's. They sized them on the initial setup. The Smartcraft screen has water pressure. At speed its about 25 or so. I bought a handful of corks..........we shall see

Yeah, that was very weird. Wish I knew how to re-create it because it was great for cooling off the teak flooring on a hot day!:eek:

Next year we need to look at installing misters!:rolleyes: