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Old 12-21-2020, 12:39 AM   #1
FlatheadEric
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Default 1937 fuel tank bung thread

The 1937 fuel tank bung was frozen solid with rust and I have had to drill it out then pick the remaining thread out.
Can someone please tell me the details of the bung size and thread used? I assume it is a tapered thread.
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Old 12-21-2020, 01:22 AM   #2
Newc
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Default Re: 1937 fuel tank bung thread

Regular us pipe thread either 14" or 3/8". Use liquid teflon when installing new plug. Newc
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Old 12-21-2020, 01:53 PM   #3
FlatheadEric
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Default Re: 1937 fuel tank bung thread

Thanks Newc, it has 14 TPI so from the American pipe chart it looks to be 1/2" NPT.
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Old 12-21-2020, 02:14 PM   #4
Zeke3
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Default Re: 1937 fuel tank bung thread

My June, 1937 Chassis Parts List says the drain plug for the fuel tank assembly 78-9002-B is p/n 353055-S, which is a 1/4"-18 standard pipe plug.
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Old 12-21-2020, 02:18 PM   #5
35fordtn
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Default Re: 1937 fuel tank bung thread

It is standard 1/4" NPT. If you get in a pickle we sell replacement bungs and plugs.
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Old 12-22-2020, 12:27 AM   #6
FlatheadEric
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Default Re: 1937 fuel tank bung thread

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Thanks all. I have got hold of a 1/4" NPT stainless steel pressure pipe plug and it fits nicely.
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