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On Sun, 2006-04-16 at 18:07, big.al@bigblackdot.net wrote: > Hi All... > > I've been working on a 70 FI and the tank was so rusty and varnished > that it was restricting fuel flow. > > So I decided to restore it with the POR15 tank sealant. I've done it > with an oval-era tank and it was a breeze. That tank I redid is > absolutely excellent. > > So, I said to myself, it should be that easy again since there can't be > that much difference in the T3 fuel tank. Right? > > evidently... not so. > > I removed the gas tank to clean and prep, no problem, but what I hadn't > noticed in the FI years was not included in the carburetor years. A > metal cup surrounding the supply and return ports in the bottom of the > tank, just below the sender. > > Doing a little investigation I found these in the archives: > http://listarchive.type3.org/archives/1999/december/msg00497.html > http://listarchive.type3.org/archives/1999/december/msg00505.html > http://listarchive.type3.org/archives/1999/december/msg00526.html > > So the cup is there only for the FI models evidently. > > Here's my question: Is fuel supposed to be able to go UNDER that cup? > At this time, I can get my tank to hold water after the cup goes dry. > which will obviously be bad later on, making my tank retain about a > half-tank reserve! > > Can anyone confirm that fuel is or is not supposed to travel under the > cup to empty the tank? > > If it is supposed to flow underneath, I'll re-treat the tank for rust (I > have not sealed it yet) and hope that cures it. > > If that doesn't work... how much damage could I do by **carefully** > drilling some vent holes in the cup to allow for flow? > Not only is that cup in the FI T-3's but is in the carbed ones too. http://classicvw.org/gallery/main.php?g2_view=core.ShowItem&g2_itemId=288 This sketch is compliments of Dave Hall's site. -- Russ Wolfe '71 FB AT '66 FB MT '64 T34 (not running) '65 T1 (not running) '05 KIA Sorento SUV russw@classicvw.org http://www.classicvw.org ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ List info at http://www.vwtype3.org/list | mailto:gregm@vwtype3.org ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~