Diesel Forum - TheDieselStop.com - View Single Post - What metals are ok to use with wvo?
Ford Diesel Forum / Powerstroke Forum
Ford Diesel Forum / Powerstroke Forum
Go Back   Diesel Forum - TheDieselStop.com
TheDieselstop.com is the premier Diesel Truck Forum on the internet. Registered Users do not see the above ads.
View Single Post
Old 10-15-2009, 07:22 PM   #2 (permalink)
airfooter
Senior Member
 
airfooter's Avatar
 
Join Date: Dec 2004
Location: North GA Mountains
Posts: 744
My Photos: (0)
Avoid copper like the plague - very, very bad. Yes, some people have had amazing LUCK using it - but I've personally seen disaster several times. Carbon steel is 2nd on the no-go list. OK, maybe galvanized steel should be 2nd - it causes polymerization AND flakes off (so does POR-15 fuel tank 'sealer').

Both of these metals increase the rate of natural degradation of the VO - called polymerization. Together they do it very fast! This is the chicken-skin or fruit roll-up looking stuff you see where VO has 'dried up'. It is in effect how they make oil-based paints, but loooong before you can SEE it, it is forming and beyond a host of other show-stopping qualities will lead to a short VO fuel filter life.

Aluminum and stainless steel are the least reactive metals and SS is generally cost prohibitive.

The tube-in-shell or hose-in-hose heat exchanger you are describing is fine, just use different material. Most of us use aluminum tubing (its cheaper than copper anyway ) for fuel lines and sometimes heat exchangers. For heated fuel lines, we run the tubing inside 3/4" heater hose. On my original conversion, I had a 25ft 'loop' of this style heated lines (called Tube-in Hose or TIH) and that was PLENTY of heat for even the coldest climates. I made a 'loop' by running the return VO line all the way to the VO tank, but instead of dumping this (already hot) oil back into the tank, I tee'd it into the VO 'out' line just before the tank. This way, the 'excess' fuel returned by fuel pressure regulator was simply sucked into the supply line and effectively re-circulated.

I later switched VO pump to an internally-regulated pump (no return to tank), so I added a 16 plate flat plate heat exchanger (FPHE - $125) instead.
__________________
Choose wisely. Or PLEASE post pics of the carnage!!!

2001 F-350, DRW, 4x4, XLT Crew Cab, flat bed, 7.3, 6 spd, Dipricol Optix gauges on pillar - EGT, Boost, Fuel Press., HPO Press. - No Muffler, AIH delete, SB Con OFE, AC code injctrs, GTP 38R. Vegistroke-inspired WVO system w/150,000 trouble-free miles! BTS tunes, 203 t-stat w/billet housing, Evans coolant, coolant filter, boost relief valve, Dieselsite IC boots, Hella headlight harness, '07 grill/lites and big, bad front bumper!

2000 Excursion 4x4 Limited - BTS trans and tunes, AIS, Frybrid/V3 SVO conversion with over 100k VO miles so far!

That's 250k miles on SVO between them!
airfooter is offline   Reply With Quote
 
» Featured Product
» Log in
User Name:

Password:

Not a member yet?
Register Now!

» Auto Insurance
» Wheel & Tire Center

Powered by vBadvanced CMPS v3.2.2

All times are GMT -5. The time now is 04:09 AM.



Powered by vBulletin® Copyright ©2000 - 2012, Jelsoft Enterprises Ltd.