On 25 Jun 2005 at 8:46, John Hayes wrote: > You have the 'SVO destroyed my TDI' folks. > > And the 'SVO is just fine' pollyannas. >
I went to the TDIclub site as well. I probably only saw a fraction of the posts, and what I saw made me realize that I didn't really do Mike's question justice with my previous answer, so this will be long in an attempt to provide more substantive info. I researched WVO for a while and decided upon the Jetta TDI, which I bought specifically with the intent of doing a WVO conversion. I chose the Jetta even though the golf or beetle would have been more to my personal taste, because the consensus seemed to be that it was desirable to isolate the WVO tank from the passenger area because the tank is heated - a hot metal tank of oil being not the most desirable presence in a passenger compartment There are a variety of systems and kits and ways that people have done these conversions and I have no doubt people have ruined their TDI's with WVO. The TDI has very close tolerances, also why it its such a high performance engine. >From what I have gathered, gumming up the injectors with WVO is one of the serious risks. Critical issues in the system then are well filtered WVO and that it be HOT. Just to clarify matters for any readers, a WVO system is a 2 tank system. Do not ever consider just pouring WVO into your regular fuel tank - that will destroy your TDI. The system I have has : a heated WVO tank and fuel lines (the lines are heated by being bundled beside a line filled with engine coolant) , a filter for the WVO (which has already been prefiltered the remove the obvious particulate fryer gunk before being put in the tank) This filter should be replaced approximately every 2000 miles, and a PURGE switch. The purge switch is a very important part of the system. It is used when switching *back* to diesel from WVO. It pushes the WVO out of the lines and injectors. If you purge for too long, you begin to suck diesel fuel into your WVO tank, but ithat's not really not a problem. The *problem* in a WVO system *without* a purge function arises because, if the WVO is not completely cleared from the engine components , you will begin to dump some WVO into the diesel tank when you shut off the car. After a while, your diesel will be contaminated with WVO. The reason why this is a problem is because your diesel tank is not heated and the WVO is too viscous at "room temperature" to flow through the injectors properly. The WVO must be at 190 degrees F to liquify it adequately. I am not a car mechanic, and the above description is what I've gained from online research and conversations, and this was the data I used to decide whether and what conversion I would do. Hope this helps. Lyn > > And the professional 'we need more scientific data' skeptics. > > And the 'yes, we need data but your studies are too old' counter-skeptics. > > Yup. I think that about sums it up. > > jh > > > Keith Addison wrote: > > Hello John > > > >> Just FYI, there is a major debate on SVO use raging at TDIclub.com > >> right now. It's actually spilled over into 3 different threads in the > >> biodiesel section of the forums(sic). > > > > > > Would you perhaps be up to giving us a summary? > > > > Best wishes > > > > Keith > > > > > >> jh > >> Lyn Gerry wrote: > >> > >>> Hi Mike and All, > >>> > >>> I just had my 1999 Jetta TDI converted, and so far, I'm really > >>> pleased. I live in central New York State and the conversion was done > >>> by Lucas MacDonald at Vegpower > >>> > >>> http://www.vegpower.com/ > >>> > >>> They can do the work or you can buy components from them. Lucas is > >>> also an experienced VW/volvo mechanic. > >>> > >>> Lyn > >>> > >>> > >>> On 22 Jun 2005 at 16:26, Mike wrote: > >>> > >>> > >>>> Has anyone ever converted a VW diesel to run on > >>>> leftover oil from restaurants or fast foods like > >>>> Krispy Kreeme and McDonalds etc... I'm about to do it > >>>> and want to follow the lead of someone else who's done > >>>> it. Thanks. > > > > > > > > _______________________________________________ > > Biofuel mailing list > > Biofuel@sustainablelists.org > > http://sustainablelists.org/mailman/listinfo/biofuel_sustainablelists.org > > > > Biofuel at Journey to Forever: > > http://journeytoforever.org/biofuel.html > > > > Search the combined Biofuel and Biofuels-biz list archives (50,000 > > messages): > > http://www.mail-archive.com/biofuel@sustainablelists.org/ > > > > > -- > John E Hayes, M.S. > Instructor, Dietetics Program, DIET 203 / DIET 215 > Doctoral Student, Nutritional Sciences > University of Connecticut - 326 Koons Hall > [EMAIL PROTECTED] / 860.486.0007 > > > _______________________________________________ > Biofuel mailing list > Biofuel@sustainablelists.org > http://sustainablelists.org/mailman/listinfo/biofuel_sustainablelists.org > > Biofuel at Journey to Forever: > http://journeytoforever.org/biofuel.html > > Search the combined Biofuel and Biofuels-biz list archives (50,000 messages): > http://www.mail-archive.com/biofuel@sustainablelists.org/ > _______________________________________________ Biofuel mailing list Biofuel@sustainablelists.org http://sustainablelists.org/mailman/listinfo/biofuel_sustainablelists.org Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Search the combined Biofuel and Biofuels-biz list archives (50,000 messages): http://www.mail-archive.com/biofuel@sustainablelists.org/
