40 sedan bridge forum

my3sons · Sep 30, 2019

The pressure regulator on my boat is 45 psi

Tom Coombs · Oct 1, 2019

I need to replace the anchor on our DB40. The current delta is bent and really doesn't set very well, which caused a bit of a dragging experience this past weekend, and a reset at 2:45am.

I am looking at a Mantus or Rocna in a 35lb or 45lb, and increasing the chain rode to 100' from 25'. I also need to get a stern/emergency anchor and think a Fortress 15.

Anyone use either of those anchors and if so, your experience with them? All inputs welcomed!

Steve Barrett · Oct 1, 2019

What method do you guys use to winterize the dockside water connection?

JASON P GRIFFITH · Oct 1, 2019

Steve Barrett said:
What method do you guys use to winterize the dockside water connection?

That is where the port-o-flush Jr. Comes in hand again

my3sons · Oct 1, 2019

Steve Barrett said:
What method do you guys use to winterize the dockside water connection?

I have done it 3 ways over the years. blow it out with compressed air, pump pink into it, or remove the screen and hose washer and push open the check valve with a blunt object after running the pink through the entire system. When I push open the check valve, pink runs back out through the inlet.
Pick the method that you feel most comfortable with. Busted water fittings in the spring probably suck.

scooper321 · Oct 1, 2019

my3sons said:
I have done it 3 ways over the years. blow it out with compressed air, pump pink into it, or remove the screen and hose washer and push open the check valve with a blunt object after running the pink through the entire system. When I push open the check valve, pink runs back out through the inlet.
Pick the method that you feel most comfortable with. Busted water fittings in the spring probably suck.

Until this year I've had someone else do it. One guy blew it out with compressed air. Others used the pink flush method. Blowing air is obviously less expensive, but perhaps a little more cumbersome the first time (to make sure you have the right fittings). But running pink though it easier. And that's the method I'm using this year. I think the key is making sure you don't overlook or forget any places where water hides. The anchor washdown hose, flushing pink through all of the bilge pumps and drains, vaccuming out the sump box, etc.

And don't forget the toilets. Turn the water system off, flush the toilets to get remaining water out. Then get a pump out. Then add pink to the water tank (like you would to run it through everywhere) and flush to make sure you get pink through toilets, the Vacuflush and the rest of the black water system.

Also, it's a bit of a religious war about whether its wise to run pink through (and leave it in) the hot water tank, or to unplug it and blow it dry. Again, I'm not sure either one is wrong. If you do use the pink, make sure the pink is coming through the hot water lines at the faucets and showers, too. Don't just test the cold lines.

And don't forget about the transom shower. Or the ice maker line (especially if you've removed your ice maker)! Or the transom wash-down.

If I keep typing, I'll come up with more, so I'll stop. It's therapeutic for me, however, as I'm reminding myself of all of this as I type it.

Tigger · Oct 9, 2019

TotallyGross said:
I have a 2002 400 Sedan Bridge with the Cummins 6CTA 8.3's.
Does anyone have a flush kit for the engines (and the gen)? If I venture into salt water next year I would like to have the ability to run fresh water through the system instead of the saltwater. Also my goal is to install it before the winterizing season here in Maryland and use it for running the antifreeze through it. Has anyone bought one or made something they could share what worked well? TIA!

Sea Flush system is the way forward:

I use(d) the Sea Flush snorkel to winterize my Cummins 6CTA 8.3's each year... and my Onan generator... and both A/C units... also used the system to run barnacle buster through the engines periodically... it can be used to effectively flush salt water per your need, too... I cannot speak highly enough of the system.

TotallyGross · Oct 9, 2019

Tigger said:
Sea Flush system is the way forward:

I use(d) the Sea Flush snorkel to winterize my Cummins 6CTA 8.3's each year... and my Onan generator... and both A/C units... also used the system to run barnacle buster through the engines periodically... it can be used to effectively flush salt water per your need, too... I cannot speak highly enough of the system.

Funny thing. I have a sea flush funnel and snorkle and loved it for my gas engines. I was afraid this is too much suction for the snorkle. I may try it with a 15 gallon garbage can and do a fresh water flush. Thanks for the reminder and I'll give that a try before I finish my PVC assembly that I was working on.

Arickosmo · Oct 9, 2019

Steve Barrett said:
What method do you guys use to winterize the dockside water connection?

I use a fitting to adapt to the compressor but also, I never use the dock water. Come to think of it, I'm not sure why I winterize it. I do use that to clear the lines after I've run pink through all of it though so I guess that counts.

I second the Sea Flush usage. I built my own system for this boat thought that threads into the strainers. I'm letting my marina winterize the engines as my insurance won't cover them if I do it myself. Needs to be professional....

Boston-boater · Oct 10, 2019

Hey all,

Not to change the subject but hoping for a little information. I am a currently a 2000 310 owner and thinking a diesel 400db would be the boat to move up to. I am wondering what kind of fuel economy you get at what speed. Thanks so much.

scooper321 · Oct 10, 2019

Boston-boater said:
Hey all,

Not to change the subject but hoping for a little information. I am a currently a 2000 310 owner and thinking a diesel 400db would be the boat to move up to. I am wondering what kind of fuel economy you get at what speed. Thanks so much.

Welcome! I just moved from a 320 to a 400 with Cummins 450’s in April. Fantastic decision on our part. We love it!

I was wondering the same thing but never bothered to check until recently. We did a nice cruise from Baltimore to Cape May NJ - an almost 6 hour cruise with just a couple no wake zones in there. Basically calm seas and minimal winds. We refilled once we got there. According to the track distance on the plotter and the refill fuel quantity, we burned under 35 GPH. I think the actual number was 32, but don’t quote me on that. That’s running at about 2100-2150 Rpm and 22-23 knots with full fuel and 1/2 water (no tender).

Not bad considering my 320 got about 23-24 knots at 30 GPH and it was half the weight.

Steve S · Oct 10, 2019

Boston-boater said:
Hey all,

Not to change the subject but hoping for a little information. I am a currently a 2000 310 owner and thinking a diesel 400db would be the boat to move up to. I am wondering what kind of fuel economy you get at what speed. Thanks so much.

The Cat 3116’s will burn 9-11 GPH each or 18-22 GPH total at cruise RPMs of 2200 to 2400. 2400 RPMs gives me 19.5 to 21 knots in my 400DB depending on the weather conditions.

ZZ13 · Oct 10, 2019

scooper321 said:
Welcome! I just moved from a 320 to a 400 with Cummins 450’s in April. Fantastic decision on our part. We love it!

I was wondering the same thing but never bothered to check until recently. We did a nice cruise from Baltimore to Cape May NJ - an almost 6 hour cruise with just a couple no wake zones in there. Basically calm seas and minimal winds. We refilled once we got there. According to the track distance on the plotter and the refill fuel quantity, we burned under 35 GPH. I think the actual number was 32, but don’t quote me on that. That’s running at about 2100-2150 Rpm and 22-23 knots with full fuel and 1/2 water (no tender).

Not bad considering my 320 got about 23-24 knots at 30 GPH and it was half the weight.

That's a lot of fuel for 2100rpm. Here is the performance curve for your engine.

my3sons · Oct 10, 2019

Boston-boater said:
Hey all,

Not to change the subject but hoping for a little information. I am a currently a 2000 310 owner and thinking a diesel 400db would be the boat to move up to. I am wondering what kind of fuel economy you get at what speed. Thanks so much.

Ours has the Cummins 6CTA. Our slow cruise is 1100 RPM giving 9 smph burning 5 gph combined.
Fast cruise is 2250 rpm giving 25+/- smph burning 30 gph combined.
Those are real world average numbers for our boat, the way we use it, with varying bottom conditions in salt and fresh over thousands of miles.

Jaybeaux · Oct 10, 2019

Boston-boater said:
Hey all,

Not to change the subject but hoping for a little information. I am a currently a 2000 310 owner and thinking a diesel 400db would be the boat to move up to. I am wondering what kind of fuel economy you get at what speed. Thanks so much.

We've owned our 2004 420 with same engines just over 3 years now. All in, all types of trips and daily, sometimes with and sometimes without the generator, our fuel usage is:

Port: 1,483 gallons 250 hours: 5.93 gph
Stbd: 1452 gallons 242 hours: 6.00 gph

Difference in hours attributed to spinning Stbd water pump impeller and limping home on a trip on one engine.

Jaybeaux

scooper321 · Oct 10, 2019

ZZ13 said:
View attachment 75723
That's a lot of fuel for 2100rpm. Here is the performance curve for your engine.

Well, it’s based off of analog tachs, that I have limited confidence in. I need to confirm them against an optical tach tool. And, as I said, it’s one data point. I will monitor more...

ZZ13 · Oct 10, 2019

scooper321 said:
Well, it’s based off of analog tachs, that I have limited confidence in. I need to confirm them against an optical tach tool. And, as I said, it’s one data point. I will monitor more...

Good luck. Without fuel flow meters I have a real hard time figuring it out. I just use the curves and declare that as my burn rate. Ha!

scooper321 · Oct 10, 2019

ZZ13 said:
Good luck. Without fuel flow meters I have a real hard time figuring it out. I just use the curves and declare that as my burn rate. Ha!

Now THAT sounds like a plan! It’s imperfect, to be sure, trying to estimate without them. How do you know you put the same amount of fuel in when you fill, even if you fill completely? You don’t. And the rest is estimating based on chart plotter info (which is probably quite accurate). On my list of upgrades is one of those engine adapters, to bring engine data to the NMEA2000 network. Fuel flow meters would be a great addition at that time. And perhaps digital tank senders too. I searched, and I’m surprised there isn’t more discussion anywhere on CSR about using the Maretron TLM100’s (or similar) as an upgrade.

Which flow meters do you use?

ZZ13 · Oct 10, 2019

scooper321 said:
Now THAT sounds like a plan! It’s imperfect, to be sure, trying to estimate without them. How do you know you put the same amount of fuel in when you fill, even if you fill completely? You don’t. And the rest is estimating based on chart plotter info (which is probably quite accurate). On my list of upgrades is one of those engine adapters, to bring engine data to the NMEA2000 network. Fuel flow meters would be a great addition at that time. And perhaps digital tank senders too. I searched, and I’m surprised there isn’t more discussion anywhere on CSR about using the Maretron TLM100’s (or similar) as an upgrade.

Which flow meters do you use?

I don't have them. Thus my post that I just use the chart. I did install the Aetna digital tachs, so I know my RPMs are accurate.

Boston-boater · Oct 10, 2019

Thanks all! Very helpful.

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