Craig > you wrote: > > I plan > on a custom tank for SVO/WVO with a false bottom > filled with coolant - most > people use a copper loop inside the SVO tanK.
Do you mean a tank under the hood? I have seen posts with concerns about coolant leaks into the SVO both with copper loops, false bottoms, and copper pipe in a hose warming systems. Coolant in fuel equals expensive repairs on engine/inj. pump/injectors...In fairness I have not seen reports of this happening but caution is indicated given the stakes. Maybe all diesels have a "water in fuel" warning light that precludes this problem becomming serious. I may be wrong but I think warming the whole SVO tank to full tmp is not the optimum method IMHO. This is what my initial conversion did and it took quite a while for he whole tank to warm up. It was also redundant as the SVO was warming much more quickly to full temp in the heated line to the fuel pump. Since the lines to and from the SVO tank must be warmed to allow the SVO to flow freely (and not strain the injector pump) if they are long enough they also act as the heat exchanger to brng the SVO up to full coolant temp. Only a small heater is required directly next to the SVO outlet to liquify the SVO enough to be pulled into the line where it is progrssivly warmed as it flows toward the engine.(more on this in a later post) By the time of "switchover" (full engine temp)the SVO in the lines to and from the SVO tank are also warm as is the small pocket of SVO near the fuel line pickup piont in the SVO tank. Since most return lines seem to discharge near that point once the engine is running on SVO the warmed SVO that is returning to the tank is recirculated back to the engine(minus any air bubbles)along with a bit of "new" SVO. this "mixture" is then easily warmed up to full temp on its' journey through the heated fuel line. I beleive that it is important to warm the SVO as much as possible not only to prevent your injector pump from failing but to also promote more complete combustion and thereby raise efficiency and lower the possability of combustion chamber deposits/coking. If you are running cool/viscous SVO to your injectors I beleive you are asking for trouble even with an indirect injection engine. Just my opinion. If you don't want to run coolant hoses to your tank there ARE other possible ways to heat the SVO. See my other post on SVO/WVO conversion - VEG-Therm. Racor seems a little high priced...but definatly high quality as well. Marine components are usually built to last. Thanks for contributing... Dana __________________________________________________ Do You Yahoo!? Check out Yahoo! Shopping and Yahoo! Auctions for all of your unique holiday gifts! Buy at http://shopping.yahoo.com or bid at http://auctions.yahoo.com ------------------------ Yahoo! Groups Sponsor ---------------------~--> Quit now for Great American Smokeout http://us.click.yahoo.com/0vN8tD/9pSDAA/ySSFAA/FGYolB/TM ---------------------------------------------------------------------~-> Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Please do NOT send "unsubscribe" messages to the list address. To unsubscribe, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
