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Electric fuel pump on our Ms ?
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tundrarules
#1 Posted : Wednesday, May 18, 2011 6:01:54 PM(UTC)
tundrarules

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Anyone using electric fuel pumps? Just curious as it has crossed my mind. I guess you would just wire it to ignition pwr wire. Mount and run rubber marine grade fuel line. Plug up hole where manual fuel pump is and go.

Not sure they are as dependable as the old manual style. Looks like the cost is about the same.

Any thoughts?
1985 Marinette 29 Sedan bridge
Twin 318s, 660 hours
New Edelbrock 1409 carbs (working like a charm)
Original Electronic Ignition, Blaster 2 coils, 90 deg plug wire universal kit cut to fit
Raw water system
Freshwater always
Located Pickwick Lake, TN,MS,AL

RETRO BOATS ARE COOL

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ComputerJoe
#2 Posted : Wednesday, May 18, 2011 7:34:08 PM(UTC)
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Wouldn't a return line be needed back to the fuel tank?
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tundrarules
#3 Posted : Wednesday, May 18, 2011 9:07:33 PM(UTC)
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The current mechanical pumps we run don't have one. Supplies pressurized fuel to carb just like an electric one.
1985 Marinette 29 Sedan bridge
Twin 318s, 660 hours
New Edelbrock 1409 carbs (working like a charm)
Original Electronic Ignition, Blaster 2 coils, 90 deg plug wire universal kit cut to fit
Raw water system
Freshwater always
Located Pickwick Lake, TN,MS,AL

RETRO BOATS ARE COOL

If the guys on this forum take their time to help you, have the courtesy to update your thread with the resolution.
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jimski2
#4 Posted : Thursday, May 19, 2011 7:02:51 AM(UTC)
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I do not think the USCG likes electric fuel pumps as a gasoline source since a leaking gasoline line would keep on spraying gasoline in your engine compartment. I have heard of electric fuel pumps priming your engine before starting up like on aircraft, but in boats, no.
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Barkleydave
#5 Posted : Thursday, May 19, 2011 7:55:58 AM(UTC)
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Yes you can use a marine grade USCG approved electric fuel pump.

Here is the Partsman's site with the product and required oil pressure sensor for proper installation.

FYI Only.


http://www.marineenginep.../store/html/page81.html



safe boating,

dave



None
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dougrose
#6 Posted : Thursday, May 19, 2011 9:54:51 AM(UTC)
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Virtually all mechanical and most electric fuel pumps "draw thru" so that they can be put in series, and only one pump has to work to keep the engine happy.

Most small aircraft have an electric fuel pump and a mechanical one, in series. The electric one is on a switch. Start procedure is to turn on the electric fuel pump, verify fuel pressure to show that it works, then start the engine. After the engine is running, shut off the electric pump and verify fuel pressure to show that the mechanical pump is working. Of course, both pumps are used for takeoff and landing, otherwise just the mechanical one.

I don't know if this would be a good idea for boats, but some members complain about how long they have to crank to get fuel into the carburetor. An electric pump would certainly help with that, and provide "get-home" capability if the mechanical pump failed.


1975 32' Flybridge Sedan, twin Perkins 6-354 diesels, 1:1.53 velvetdrives, 16 X 19 props. Merritt Island, Florida
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yooper
#7 Posted : Thursday, May 19, 2011 11:01:37 AM(UTC)
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We need one of you big buck guys to quit foolin around with half measures and install one of these EFI kits.

http://www.affordable-fu...e_TBI_System-31-47.html
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tundrarules
#8 Posted : Thursday, May 19, 2011 1:30:43 PM(UTC)
tundrarules

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Besides the crank time the manual pumps seem to have proven dependable. At twice the cost and some labor time, I think sticking with the manual fuel pump is the way to go for me. Thanks fo all the input.Applause
1985 Marinette 29 Sedan bridge
Twin 318s, 660 hours
New Edelbrock 1409 carbs (working like a charm)
Original Electronic Ignition, Blaster 2 coils, 90 deg plug wire universal kit cut to fit
Raw water system
Freshwater always
Located Pickwick Lake, TN,MS,AL

RETRO BOATS ARE COOL

If the guys on this forum take their time to help you, have the courtesy to update your thread with the resolution.
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dougrose
#9 Posted : Thursday, May 19, 2011 2:59:46 PM(UTC)
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Yooper:

These are "open loop" systems. I think that refers to the fact that there is no 02 sensor in the exhaust to tell you (or the computer) if you have the right mix or not. Jeff would know.

I wouldn't mind a system that had a fuel mixture lever like many airplanes. You get the throttle you want, then ease back on the fuel mix until a cylinder misses, then ease forward a bit. In choppy conditions you would run richer to handle the changing load.


1975 32' Flybridge Sedan, twin Perkins 6-354 diesels, 1:1.53 velvetdrives, 16 X 19 props. Merritt Island, Florida
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yooper
#10 Posted : Thursday, May 19, 2011 6:17:30 PM(UTC)
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Doug,

I don't know how they solved the need for computer sensors in the wet boat exhaust systems. I just know I am still struggling trying to get a new long block to work right in my project 28'. The trouble with a new long block is you bolt a lot of old stuff right back on. We installed an electronic ignition. It still lugs out and starts to stall at about 2700 or 2800 RPM. A lot of owners on this site have similar problems. If I can't solve it soon, a kit like this would be tempting because it replaces all of the electrical and fuel delivery systems.
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Barkleydave
#11 Posted : Thursday, May 19, 2011 8:01:36 PM(UTC)
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I have monitored and provided minimal input on engine issue for a long time I have come to my personal solution regarding this issue.

1. As I get older and older!...my boating time seems more important to me.
2. I have less energy and far less patience dealing with mechanical issues etc.
3. The cost of fuel has become an issue, and probably will determine whether I stay in power boating or revert back to my roots in wind machines.

When my engines fail and they will they all do.. I will either

A. Sell cheap and get out or..
B. Bight the bullet and have crate engines and trans installed and enjoy hopefully trouble free boating with the time I have left with my passion and the people I have had the opportunity to meet and spend time with.

So Crate it is for me.

dave
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