Quote:
Originally posted by BoostnBenz
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What sort of suggestions are you angling for? Your model 1 appears right on to me. You'll just have a hose whatever size OD your fittings it Ting into the current 7mm feed fuel hose for your WVO's return. The diesel return is automatically correct because of your setup.
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well..... the biggest quandry I was having was how can I plumb all this without slowing the returning fuel down below OEM designs. I knew this would create back pressure and worried this may cause problems. I wanted assitance in choosing which of my designs would work the best with this in mind.
Another headache that I saw creeping up was the problems posed with the small size injector return line. Especially when it comes to "T"ing this line to the larger IP return line.
I had hopped to have a lot of this hashed out from info from here and other boards in advance; prior to getting in there and doing the actual plumbing. Oh well..... Time lines of reality on the boards and when I needed to do the hands on work just didnt match up this time. Thanks for asking how you might could help me.
Soooo..... anyway.... yesturday as I started to plumb away I realized.... OH SHIATTTTT. Neither one of the actual designs I posted here would work because my 12v fuel pump will push fuel from the tank UP my return line that is "T"ed into the incomming fuel line from my pump. The pressure of the fuel pump would over power the pressure of the fuel comming in from the return lines thus it would back flow up the return lines.
I had two choises.... a 15 dollar check valve or a 4 dollar gas pre filter with a built in air bleed. Guess which one I took
Also this filter made installation easier just cause it all the plumbing ended up in more accessable areas. Another words..... I completely skipped feeding the WVO return loop back into the MB fuel filter. I ended up using the gas fuel filter w/bleed instead. I put this gizmo in the typical fuel return loop and fed the bleed to the Injector return port on the Banjo. Most the fuel goes on to a "T" in the fuel feed line from the filter to the IP. Being able to bleed air out of the returning WVO fuel was the intent of my designs from the get go.
When I select with the valve to run on just diesel the two returns "T"ed together feeds into the port on the banjo that orginally was just for the IP return.
Now that sounds simple... buttttttt....
You touched lighty above on the issue of getting return lines to "T" together. In reality doing this was a PITA. The fact that the banjo return bolt atop of the MB filter has two different hose sizesposed a big problem that I searched High and Low to solve. "T"ing the two sized together was a nightmare. They are no local supplies of quality nipples, reducers, etc. available for use with hose as small as the injector fuel return line. I ended up using a universal vacuum hose "T" that had muliti sizes on all three ports. I also used a piece cut off of one of these to splice a 1/4" line to the small injector line (apx. 1/8") so it could connect to the injector retrun port of the the banjo. I'm not real happy about this but I had no choice. Also hose clamps are not really made to work with line that small.
Oh welll...... I managed.. and TADAAAAAA.
IM WVO POWERD NOW BABBBY