Injector Teardown and Inspection after 8k on WVO

[JOAT]

I pulled injector #3 over the weekend to do a teardown and inspect for any signs of corosion or pitting that might be WVO related. Considering this injector could have as much as 330k on it, it looked pretty good. Some noticeable polishing on the wear surfaces, but the piston and plunger felt tight in their bores. No real junk or odd wear noticed, tho outside of the injector above the cup was some gunk that on close inspection appeared to be fiber from a fuel filter. Kind of a fine lint. None in the injector itself. Metal where the fuel flowed under high pressure was tan colored but not rough or pitted that I could tell.

EDIT: Pics upload doesn't seem to be showing at webshots. If interested there are pics at SDD

[ToddT]

That's great news! For review, how are you filtering and de-watering your oil in the shop? What are you using for filtration in the vehicle?

What type oil do you usually collect?

Just as we need to learn from our mistakes, its great to know what variables are involved in the success stories so we can duplicate it.

Todd

[JOAT]

My filtration varies due to oil variations (hydro vs non). I add extra heating, course screening and 400 micron steps if it's really nasty. About half my oil is nasty hydro with grill grease and lots of crud, other half clean Asian and Mexican restaurant oil.

-Basically, oil is strained heated or cold depending on if it will pass a strainer.
-From the strainer it goes to a drum with a 2000 watt 110v water heater element. This oil is heated to about 140*F. After it cools to about 125-130, everything above 6 inches goes thru a 200 micron filter bag to another drum.
-After this drum is full, I heat again (another 2k watt 110v element)vto 125-130, and pump everything above 4 inches to a drum in the attic, where it gravity flows thru an STP truck air filter (courtesy FN74's recomendation) to another drum,
-and then flows thru a final filter, currently an FS1000 (which sits in a water filled crock pot to keep the temp up, $3 at wally world).

Testing shows no sputter, but some to moderate bubble formation using Dana Linscotts sputter test. Incidentally the heat from the 110v elements is intense enough to flash alot of the moisture that circulates past them into steam, which rises off the top.

In the truck I have another FS1000 pre-pump.

[rkpatt]

JOAT - I could not find your truck and WVO stuff at Webshots using the bookmarks that i save from a while back . Could you please upload them again there or at Photoboucket ? - Thanks