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Discussion Topic:
Gas tank drain plug
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jehn |
12-16-2014 @ 7:52 AM
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New Member
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Joined: Nov 2012
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I have bought a new gastank from Bob Drake for my -41 bus coupe. I am confused about the bottom drain plug which was delivered by the tank. When I screw it in to the tank it will only go half the way and then it is stop. There is even not a seal for the plug and I am afraid it become to leak without a seal. Is there anybody how know anything about this?
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trjford8 |
12-16-2014 @ 7:59 AM
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Senior
Posts: 4215
Joined: Oct 2009
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It's a pipe plug and it has tapered threads. It should not leak.
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jehn |
12-16-2014 @ 8:25 AM
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New Member
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Thanks for your fast reply. So you mean that the plug is a little bit conic? I had a supposition about that but not sure att all. Thanks a lot.
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trjford8 |
12-17-2014 @ 7:52 AM
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Senior
Posts: 4215
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It's basically an "interference fit" as the plug is tapered and gets larger towards the top.
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40 Coupe |
12-17-2014 @ 1:26 PM
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Senior
Posts: 1676
Joined: Oct 2009
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The thread is NPT or National Pipe Thread, yes it is conical. Do use a sealer on the threads. There are only a couple sealers that resist Gasoline. Permatex "High Tack" gasket sealant is one.
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jehn |
12-18-2014 @ 7:47 AM
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New Member
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If I can´t get Permatex, do You know any other fuel resistant sealer? Thanks so much guys for your advices.
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TomO |
12-18-2014 @ 8:00 AM
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Senior
Posts: 7253
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Do Not use a sealer or Teflon tape on the plug. Just tighten it until it seals.
Tom
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jehn |
12-18-2014 @ 8:11 AM
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New Member
Posts: 101
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Seems to be different advices about thread sealent. I think I put in the plug and put a little fuel in to the tank to make a test without sealent.
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40 Coupe |
12-19-2014 @ 4:18 AM
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Senior
Posts: 1676
Joined: Oct 2009
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The web is your friend. I would suggest you use google to find out if NPT thread form requires thread sealant. NOTE: NPTF is different thread form than NPT. Tom is correct in saying not to use Teflon tape.
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jehn |
12-19-2014 @ 10:05 AM
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New Member
Posts: 101
Joined: Nov 2012
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Yes, the web and also the Ford V8 club is the best friends! Thanks again and Merry Christmas and a Happy New Ford Year from Sweden.
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