| Author |
Message |
    
matt
Senior Member
Username: matt
Post Number: 144
Registered: 04-2006
| | Posted on Saturday, April 07, 2012 - 06:19 am: | 
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Matt here , i am soon to re_engine with a diesel, a small Nanni 10 hp twin.
The boat originally had a petrol engine so there was no need for a return line, the tank is under the foredeck and above the engine .
To remove the tank would be a real pain , has anyone got any ideas on how to get a return line system going that would not mean altering the tank, any help would be great.
Matt. |
oslin04
Senior Member
Username: oslin04
Post Number: 65
Registered: 10-2006
| | Posted on Saturday, April 07, 2012 - 10:25 am: |
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Hi Matt, have a look at your fuel filter if there is an unused take off with the arrow pointing towards the filter (cav type) you can take the return back to there, if not you will have to run another line back to the tank, if there is no fitting in the tank for it and it is thick enough and metal you can drill and tap a hole in the top of the tank or the bottom of the filler tube and screw a fitting in there to accept the return,
Keith, Marine Engineer |
matt_morehouse
Senior Member
Username: matt_morehouse
Post Number: 119
Registered: 12-2009
| | Posted on Saturday, April 07, 2012 - 10:25 am: |
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I would install a small "daytank" near the engine. Put a petcock on the bottom to drain it and pour the fuel back in the main tank.
A one or two gallon daytank should not need emptying any more often than once a week for a small diesel. |
matt_morehouse
Senior Member
Username: matt_morehouse
Post Number: 120
Registered: 12-2009
| | Posted on Saturday, April 07, 2012 - 10:29 am: |
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Another thought; you could plumb the daytank so it tees into the main fuelline. When the daytank is close to full turn off the fuel from the main tank and run for a few hours on the daytank.
This would save the hassle of draining the daytank. |
jimdereynier
Senior Member
Username: jimdereynier
Post Number: 57
Registered: 08-2007
| | Posted on Saturday, April 07, 2012 - 10:06 pm: |
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Matt
Now I know why i kept the the old fuel filter on the Sabb Engine. It has the return line in the top. ( Up stream of this filter is a Parker Hannifin 30 micron and then a glass bowl with a screen) |
matt
Senior Member
Username: matt
Post Number: 145
Registered: 04-2006
| | Posted on Sunday, April 08, 2012 - 01:26 am: |
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Thanks a lot guys the return line into the filter sounds the goods.
I had no idea when deciding to re engine with a diesel how much i would have to change, such as prop, coupling, filters, battery and engine controls, but i cant wait for the day when i just turn the key and push the button.
Regards Matt. |
jimdereynier
Senior Member
Username: jimdereynier
Post Number: 99
Registered: 08-2007
| | Posted on Saturday, May 17, 2014 - 11:08 am: |
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Need a source for making fuel injector fuel line- Bosch.
I stripped the # 2 line on my Sabb H and the return line now has a neak- $300 from Sabb for both lines.
Metro Fuel Injector here in CT has no source.
Attached is a picture of the #2 line- Is this end bushing unique to Bosch? |
jimdereynier
Senior Member
Username: jimdereynier
Post Number: 100
Registered: 08-2007
| | Posted on Saturday, May 17, 2014 - 11:26 am: |
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here is the picture of the end bushing |
nobby
Advanced Member
Username: nobby
Post Number: 41
Registered: 12-2005
| | Posted on Sunday, May 18, 2014 - 12:14 pm: |
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Jim,
Here are a couple of possibilities for line fabrication. Also the first one I listed East Coast Diesel I've never had to ask them and they do not mention they do it but may well be a good candidate and they are here on LI. Atlantic definitely does it. I have more in my notes but they are further away. I would not be surprised though if you wind up paying close to Sabb pricing.
http://www.ecdieselsvc.com/index.html
http://www.atlanticfuelinj.com/index.php?pr=Services
Cheers
Nobby |
bad
New member
Username: bad
Post Number: 3
Registered: 06-2012
| | Posted on Sunday, May 18, 2014 - 11:47 pm: |
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Jim - I hate when this happens.... I would be interested in hearing what you find out as to non-SABB replacement. The supply line is steel and the fitting is a standard Bosch style. The line needs to be custom bent though. I think the injector fires at 100 bar or 1400 psi. The return line is copper with metric banjo fittings and a flared end on top of the fuel filter. i imagine that one could be replaced with a hose line, and it can return anywhere upstream of the injector pump. |
