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Old 07-23-2014, 08:41 PM   #21
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A thing I find very useful now that I'am not working on stuff everyday is to take pictures with my iPhone of things before I take them apart.
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I don't like making plans for the day because the word "premeditated" gets thrown around in the courtroom.
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Old 07-24-2014, 06:47 AM   #22
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Return lines for high volume is not too common on small engines where the fuel is not used to cool the injectors .

Will be interesting to see if the return flow is drops or an actual stream of fuel.

Keep track of the tank temp if the return volume is high , you may need to use two tanks to keep the fuel cool.

Cool is anything you can touch and not get burned with.
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Old 07-24-2014, 11:51 AM   #23
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Eric,

Sounds like you are getting ready to Leave Latitude. Where is your new moorage?
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Old 07-24-2014, 12:39 PM   #24
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Every diesel I've worked on has some sort of built in lift pump, so tank can be below level of engine. Might be plunger type, diaphragm type, gear type or electric. But I bet there is one there somewhere.

Can you post a photo of your engine, showing the fuel system? Not familiar with that specific engine by your description.
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Old 07-24-2014, 03:42 PM   #25
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Ff,
Very interesting about the fuel cooling. The return line is quite small so I'm not expecting much flow. The return line will go through the plastic cap pon top of the tank and I intend to put a clamp of sorts to prevent the return hose from coming out and dribbling diesel all over the boat. And at 40hp there's probably not much heat .. but I'll check. But if this engine were on a generator there could be times where max power for a long period could come to pass.
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Old 07-24-2014, 03:47 PM   #26
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Ski,
Don't have a photo that would show that and doubt I could get my head down there either. HaHa though I could stick my camera down there and see for myself what's there. Hmmm. I'll try both.

I did talk to the marineizer and he said they all came from Mitsubishi w the electric pump.
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Old 08-02-2014, 09:29 AM   #27
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Update;

The aux tank I had made up leaked where the outlet valve was attached an inch above the bottom. I tried to fix it w JB Weld but it still leaked .... very little however.

SO .. I took FFs advice and cleaned up an old OB tank. No rust inside so it's good and clean. Tested the flow .. w my little aux pump .. it's good. Didn't know the little pump could pump that much.

And in the end I did use the electric fuel pump. Once I got the wiring sorted out Mitsu started instantly and ran perfect.

Decided I didn't have time for experiments as I've got an overwhelming amount of other projects before launch. About a month. Hope the 2 shower a day hot weather will be gone by then.
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Old 08-02-2014, 12:55 PM   #28
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Are you working on Willy or a project boat?
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