1995 Dodge Cummins 4x4 WVO conversion, FPHE, 3 valves

A description and pics of your SVO WVO Vegetable Oil conversion, help the next person who gets that model.

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Re: 1995 Dodge Cummins 4x4 WVO conversion, FPHE, 3 valves

Postby MikeGoodman59 » Sun Aug 05, 2012 2:21 pm

What is your connection to the cut fuel line. I am guessing you cut it. Does a 3/8 hose going over it seal tight enough or is it a source of air ... tthought of a compression fitting if double clamps don,t work. Right now it's siphonig ou when I remove it so I know I have fuel there. Gettinv soaked right now. Could plumb it up to the supply hose (vice gripped and then grt on real fat. Your thoughts? I know your way works but this is shat I have.
Mike Goodman
High Point, NC
1983 MB 2-tank (Modified Greasel, 2005)
1982 VW Rabbit Truck (Custom Conversion, 12/09)
1998 Dodge 12V 5.9L (Golden Fuels, 07/12)
DieselCraft processor
Tinkering w/BD
2.8 KW grid-tie/batt back-up
6-4x10 solar heat/HW wood stove
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Re: 1995 Dodge Cummins 4x4 WVO conversion, FPHE, 3 valves

Postby MikeGoodman59 » Sun Aug 05, 2012 3:41 pm

Sun ... may have posted this already, but was from a "smart" phone. You have to cut the hard fuel supply line at some point, right? Where mine is cut, on the rail below, I just have a 3/8 ID hose slipped over and double-clamped. That may be a source of leaking. If so, I'm thinking of a compression fitting. How's that sound?
Mike Goodman
High Point, NC
1983 MB 2-tank (Modified Greasel, 2005)
1982 VW Rabbit Truck (Custom Conversion, 12/09)
1998 Dodge 12V 5.9L (Golden Fuels, 07/12)
DieselCraft processor
Tinkering w/BD
2.8 KW grid-tie/batt back-up
6-4x10 solar heat/HW wood stove
MikeGoodman59
 
Posts: 31
Joined: Tue Dec 23, 2008 10:49 pm
Location: High Point, NC

Re: 1995 Dodge Cummins 4x4 WVO conversion, FPHE, 3 valves

Postby SunWizard » Sun Aug 05, 2012 7:44 pm

MikeGoodman59 wrote:If so, I'm thinking of a compression fitting. How's that sound?

All of mine are cut and hose slipped over. No air leak problems in 6 years of hard use. Compression would work but you need to go to hose somehow even with compression, and it could leak at any fitting or hose connection, so less fittings is better. Moving a clear inline filter around is the best way to spot where its coming from.
YVORMV - Your veg. oil results may vary.
95 Dodge Cummins 4x4 SVO WVO conversion.
81 Mercedes 300D- stock and happy on V80/D20 blend.
Low fossil net zero house- 100% solar power and heat.
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Re: 1995 Dodge Cummins 4x4 WVO conversion, FPHE, 3 valves

Postby MikeGoodman59 » Sun Aug 05, 2012 8:09 pm

SunWizard wrote:
MikeGoodman59 wrote:If so, I'm thinking of a compression fitting. How's that sound?

All of mine are cut and hose slipped over. No air leak problems in 6 years of hard use. Compression would work but you need to go to hose somehow even with compression, and it could leak at any fitting or hose connection, so less fittings is better. Moving a clear inline filter around is the best way to spot where its coming from.


I agree with the idea of more fittings. It went on tight. ....
No problem on WVO. Have nylon braid where I need to see. It's not as good @ sealing on the barbs.

On diesel I have solid line, then rubber hose (dbl-clamped), to the RACOR. Plugs are sealed but the filter isn't full to the upper plugs. I think it's coming in at the barbs which are cheap ... or at one of the plugs. It's getting air at the inlet of the lift pump ... (again, not your way) ... electrical.

The reason I know they are cheap barbs is because the nylon-braid wouldn't hold a column of fluid just on the barbs alone, kept going down before clamping. The diesel filter had it's outlet going by nyl-braid to the selector valve (solenoid - GFS) and I changed that to black rubber. Then the selector valve out to the lift pump is still nyl-braid. Thought that solved it. Next day was a charm. Now I'm back to getting air, but only on diesel.

I am prepared to come off the L-Barbs (MIP to barb) with pipe fittings to "better" barbs from Lowes. But there, too, more fittings. It shut down alright. Will see in the morning.
Mike Goodman
High Point, NC
1983 MB 2-tank (Modified Greasel, 2005)
1982 VW Rabbit Truck (Custom Conversion, 12/09)
1998 Dodge 12V 5.9L (Golden Fuels, 07/12)
DieselCraft processor
Tinkering w/BD
2.8 KW grid-tie/batt back-up
6-4x10 solar heat/HW wood stove
MikeGoodman59
 
Posts: 31
Joined: Tue Dec 23, 2008 10:49 pm
Location: High Point, NC

Re: 1995 Dodge Cummins 4x4 WVO conversion, FPHE, 3 valves

Postby MikeGoodman59 » Sun Aug 05, 2012 8:10 pm

One good thing is that when I momentarily removed the hose from the hard line, which is at about the same place the original supply/return were, is that it siphoned out ... granted, all over my T-shirt ... but the good thing is that I'm pulling solid fuel, best I can tell.
Mike Goodman
High Point, NC
1983 MB 2-tank (Modified Greasel, 2005)
1982 VW Rabbit Truck (Custom Conversion, 12/09)
1998 Dodge 12V 5.9L (Golden Fuels, 07/12)
DieselCraft processor
Tinkering w/BD
2.8 KW grid-tie/batt back-up
6-4x10 solar heat/HW wood stove
MikeGoodman59
 
Posts: 31
Joined: Tue Dec 23, 2008 10:49 pm
Location: High Point, NC

Re: 1995 Dodge Cummins 4x4 WVO conversion, FPHE, 3 valves

Postby Bear Pen » Fri Aug 30, 2013 7:24 am

I'm just finishing up working out the bugs on my conversion of my '98 Dodge. One thing I found is that it was a mistake using 3/8 rubber fuel line to attach to the metal lines I had to cut. 5/16 is a lot closer to the size of the metal lines. The other day the 3/8 line attached to the fuel pump outlet blew off and I spent an unhappy hour in a parking lot in 100 degree heat putting it back on. Now it's changed to 5/16 and double-clamped. Yesterday we drove 200 miles on veg--I think she's ready to go........
Off-Grid for 40 years
Solar powered home and shop
''85 MB 300D
'98 2WD Dodge Cummins w/ homebuilt 2-tank system
Belarus 240AN tractor--Diesel
Kubota 4400 diesel tractor
'39 Allis Chalmers "B" tractor gasburner
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Re: 1995 Dodge Cummins 4x4 WVO conversion, FPHE, 3 valves

Postby dark_flame221 » Fri Aug 30, 2013 3:36 pm

why do we need a return to the diesel tank if we can simply tee back the wvo juste before the lift pump ? :oops:
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Re: 1995 Dodge Cummins 4x4 WVO conversion, FPHE, 3 valves

Postby SunWizard » Fri Aug 30, 2013 4:53 pm

dark_flame221 wrote:why do we need a return to the diesel tank if we can simply tee back the wvo juste before the lift pump ? :oops:

If you look at the diagram in post 1, on WVO it is looped to just before the lift pump. On diesel it uses the stock return. This makes for much faster purges, like 1 minute instead of 15 minutes.
YVORMV - Your veg. oil results may vary.
95 Dodge Cummins 4x4 SVO WVO conversion.
81 Mercedes 300D- stock and happy on V80/D20 blend.
Low fossil net zero house- 100% solar power and heat.
SunWizard
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Re: 1995 Dodge Cummins 4x4 WVO conversion, FPHE, 3 valves

Postby dark_flame221 » Fri Aug 30, 2013 5:59 pm

SunWizard wrote:
dark_flame221 wrote:why do we need a return to the diesel tank if we can simply tee back the wvo juste before the lift pump ? :oops:

If you look at the diagram in post 1, on WVO it is looped to just before the lift pump. On diesel it uses the stock return. This makes for much faster purges, like 1 minute instead of 15 minutes.



I know that there is one from the factory, but my question is if we can tee back the wvo return right before the lift pump, could we do the same thing with the diesel ? so i would not need a valve for the return... :?:
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Re: 1995 Dodge Cummins 4x4 WVO conversion, FPHE, 3 valves

Postby SunWizard » Fri Aug 30, 2013 6:43 pm

dark_flame221 wrote:
SunWizard wrote:
dark_flame221 wrote:why do we need a return to the diesel tank if we can simply tee back the wvo juste before the lift pump ? :oops:

If you look at the diagram in post 1, on WVO it is looped to just before the lift pump. On diesel it uses the stock return. This makes for much faster purges, like 1 minute instead of 15 minutes.



I know that there is one from the factory, but my question is if we can tee back the wvo return right before the lift pump, could we do the same thing with the diesel ? so i would not need a valve for the return... :?:

Yes you could but then your purges would take 15x longer or more. The return also helps clear out any air that gets in there while sitting or from a filter change.
YVORMV - Your veg. oil results may vary.
95 Dodge Cummins 4x4 SVO WVO conversion.
81 Mercedes 300D- stock and happy on V80/D20 blend.
Low fossil net zero house- 100% solar power and heat.
SunWizard
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Re: 1995 Dodge Cummins 4x4 WVO conversion, FPHE, 3 valves

Postby dieselsragem » Wed Sep 17, 2014 1:21 pm

Is a 1/4" I boats valve going to give adequate fuel delivery?
Their out of stock on the 3/8 valve.
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Re: 1995 Dodge Cummins 4x4 WVO conversion, FPHE, 3 valves

Postby SunWizard » Wed Sep 17, 2014 1:36 pm

Yes 1/4 NPT iboats valve is what I have been using for >8 years.
YVORMV - Your veg. oil results may vary.
95 Dodge Cummins 4x4 SVO WVO conversion.
81 Mercedes 300D- stock and happy on V80/D20 blend.
Low fossil net zero house- 100% solar power and heat.
SunWizard
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Location: N. Colorado

Re: 1995 Dodge Cummins 4x4 WVO conversion, FPHE, 3 valves

Postby vegnomad » Fri Oct 03, 2014 8:00 am

I have the same concern about the 1/4" valve. It's good to see that yours has worked fine sunwizard.

My engine has had horsepower upgrades (timing, governor springs, 50hp injectors, fuel plate), it has over 300hp and over 800 ft-lbs of torque. So I'm a little concerned about fuel supply line through 1/4". Oddly (but great) the power upgrades had little to no effect on my mileage so maybe it will work just fine.

Are you running larger fuel line before the 1/4" valve?

thanks!
'98 Dodge 2500 12v cummins - in process of WVO conversion
2003 Jetta TDI - future conversion planned
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Re: 1995 Dodge Cummins 4x4 WVO conversion, FPHE, 3 valves

Postby SunWizard » Fri Oct 03, 2014 9:10 am

vegnomad wrote:I have the same concern about the 1/4" valve. It's good to see that yours has worked fine sunwizard.

My engine has had horsepower upgrades (timing, governor springs, 50hp injectors, fuel plate), it has over 300hp and over 800 ft-lbs of torque. So I'm a little concerned about fuel supply line through 1/4". Oddly (but great) the power upgrades had little to no effect on my mileage so maybe it will work just fine.

Are you running larger fuel line before the 1/4" valve?

I have stock fuel line before and after the valves, which is 3/8" OD, 1/4" ID about the same size as 1/4 NPT valve which measures 0.54" OD. The 50 psi that my strong stock lift pump produces is 45 psi more than needed, so a few psi lost in the lines and valves is no problem at all. The overflow valve opens and lets anything above 35 psi go back through the return, so that is 15 psi extra that is wasted all the time.
YVORMV - Your veg. oil results may vary.
95 Dodge Cummins 4x4 SVO WVO conversion.
81 Mercedes 300D- stock and happy on V80/D20 blend.
Low fossil net zero house- 100% solar power and heat.
SunWizard
Site Admin
 
Posts: 1720
Joined: Mon Dec 11, 2006 2:53 pm
Location: N. Colorado

Re: 1995 Dodge Cummins 4x4 WVO conversion, FPHE, 3 valves

Postby vegnomad » Fri Oct 03, 2014 11:47 am

you can see the WVO pressure and temp guage senders


sunwizard, thanks for all your info! are the gauges and sending units you used anything special? and where did you install the needle valve to steady the pulses?
'98 Dodge 2500 12v cummins - in process of WVO conversion
2003 Jetta TDI - future conversion planned
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