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Old 06-28-2015, 09:11 PM   #1
Mathew21
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Anyone running a Boyd Welding tank please come on in

I installed a Boyd welding tank in my 1966 C20. I need to know what to use to plug the fuel tank drain plug. The thread size is 3/8" NPT. Boyd's does not show a drain plug on there website. I emailed them and they said they don't sell one.

I went to Lowe's and bought a 3/8" NPT brass plug. I put permatex thread sealant that said is safe for gasoline on the threads but it's still leaking.

So what did you use?

Thanks, Matt
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Old 06-29-2015, 06:49 AM   #2
PGSigns
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Re: Anyone running a Boyd Welding tank please come on in

I have my pickup in that hole. I used permatex pipe sealant with teflon. Been fine for a couple of years so far.http://www.permatex.com/products-2/p...th-ptfe-detail
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Old 06-29-2015, 09:31 AM   #3
siggyfreud
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Re: Anyone running a Boyd Welding tank please come on in

That's where I run my fuel return to. But the right thread with the right sealant shouldn't leak. Try a different sealant type.
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Old 06-29-2015, 10:23 AM   #4
Clyde65
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Re: Anyone running a Boyd Welding tank please come on in

I run my feed from that location.( Passenger side low on the tank) My return is on top of the tank.
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Old 06-29-2015, 11:59 AM   #5
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Re: Anyone running a Boyd Welding tank please come on in

My tank has the in-tank EFI fuel pump, hence why I feed from the top. I put my return on the bottom so I don't have any pouring effect as the fuel returns. The top return was too close to the pickup for my liking and I didn't want any kind of aeration effect of making the fuel splash around the pickup.
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Old 06-29-2015, 08:09 PM   #6
Mathew21
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Re: Anyone running a Boyd Welding tank please come on in

Thanks everyone for the replies I just went and bought Permatex thread sealant with teflon.
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Old 07-01-2015, 02:39 PM   #7
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Re: Anyone running a Boyd Welding tank please come on in

That should fix it...I have that same brass plug, a few wraps of tape and haven't had a leak even one time.
T
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