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Don't think about upgrading your boat to diesel, each of my motors holds about 9 GALLONS!

What pressure is indicated on smartcraft? Not 100% accurate because the sensors often go bad, but that was one of the metrics I used to watch like a hawk while underway. While running at 3500 rpm, my pressure indicated 30-32 psi on new impellors.

I did mine. It's fairly easy if you are handy with a wrench. On the port side, I recommend removing the muffler to allow easy access to the pump. Do the starboard engine first, easy access and you will learn what needs to be done before tackling the port.

That's how I fill my racors!

My only real concern with the M-11 motors (now that I've reduced the pitch of my props) is the aftercoolers. I can't really find definitive or even guidelines on what the periodicity is for tearing down and inspecting the aftercooler cores. I have installed a freshwater rinse system, but it...

Head on down to Tides Inn, they are even higher.

He is showing 8.1 motors in his signature, they are injected.

The clear diaphragm models are usually the "on demand" style compressor powered horns. (small compressor directly connected to the horn) They usually use much less pressure than the pump/reservoir with a solenoid valve type. The clear diaphragm type should be fairly loud just with lung power...

It's probably too late to save your weekend but the main panel is on the bulkhead that divides the engine room from the lazarette (port side just forward of the batteries). Disconnect the coax cable. The Sea Ray Systems Monitor is a finicky and not well supported piece of gear. It does provide...

When I pulled my subzero's out I needed to remove the wooden "floor insert" in order to gain enough clearance. The flooring that you see, is attached to a piece of plywood subflooring that is screwed down (with many screws) under the carpet. The staples that held the carpet down were fairly...

+1 on the Bucket Head. I've used mine in a 100% marine environment for at least four years in the bilge and it's still running.

You may also want to consider using a diesel fuel treatment to help with any potential algae growth. I use Biobor JF.

I spent 20+ years in the U.S. Navy, I call the stringy tying up thingies all kinds of different names to confuse some of those purists. It was even more evident (and more funny) when I lived on a 30' Catalina while still on active duty. The sailboaters are even more tight about when a rope...

Both fans should be pulling from the engine area and push it through the vents. (At least that's how it worked on mine.) You should be able to feel air flow from both sides. I would even deflect the air up to my face to smell for gasoline after fueling (just in case). I don't believe they are on...

May want to look at drawstring sheets as well, they worked well on my 360DA.

There were interior changes thru the run of the 480s. I think the first year they may have used Vitricore laminates which have issues if the interior is allowed to get hot and humid in the summertime. Also there are some upholstery differences starting in 2002. They got away from the sort of...

I replaced mine @ 15 years (in 100% saltwater) just for peace of mind. If you are already in there doing the manifolds, the elbows are no more investment in time. I also stenciled the manifold and elbow so I (or the next owner) was sure when they were replaced last. Like the manifolds, you will...

My 360DA had enough room to walk (sideways) between the engines. I don't know how anyone does the maintenance on 340s or 320s without disassembling exhaust / risers and such in order to do basic maintenance and impellers. My 480DB has more room, but I'm stooped over and getting to the port...

Try to make your next boat, your last, two foot-itis can get expensive!

Vince, my 480 has Cummins, but a friend of mine has a 58 with the 900 MAN engines. All parts are more expensive and the 1000 hr check is about 10K per engine. Get an actual MAN man to do your survey. They are good engines and MAN is very proud of their product. But I have seen a few of these in...