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06-12-2021, 04:46 PM
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CC Member
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Join Date: Jan 2002
Location: Lakeland,
FL
Cobra Make, Engine: ERA 427SC FMS 351W
Posts: 199
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Not Ranked
For leak free connection
I am installing a new electric fuel pump. All connected gas lines and electrical wires. After starting I have a very slow leak on the outlet side. I probably need to reseat the brass 3/8 fitting into the aluminum fuel pump block. What should I put on the threads for a leak free connection. I am using teflon tape now but maybe not enough. Teflon tape, pipe dope or something else?? Thanks
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06-12-2021, 05:16 PM
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Half-Ass Member
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Join Date: Jun 2005
Cobra Make, Engine: ERA #732, 428FE (447 CID), TKO600, Solid Flat Tappet Cam, Tons of Aluminum
Posts: 22,018
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Not Ranked
Quote:
Originally Posted by Cobra 29
Teflon tape, pipe dope or something else?? Thanks
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Something else.  Permatex 80019 Aviation Form-A-Gasket No. 3 Sealant
https://www.amazon.com/Permatex-8001.../dp/B000HBM3QQ
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06-12-2021, 05:34 PM
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CC Member
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Join Date: Nov 2014
Location: Winter Garden,
Fl
Cobra Make, Engine: Everett Morrison/Side Oiler
Posts: 88
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Not Ranked
Sealant
We use this in the HVAC industry:
https://www.supco.com/web/supco_live...s/HS11001.html
Never fails. Can be bought individually online.
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06-13-2021, 08:29 AM
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CC Member
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Join Date: Feb 2001
Location: BRADENTON,
FL
Cobra Make, Engine: KIRKHAM 427 S/C, SHELBY 427 ALUM. STROKER
Posts: 1,396
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Not Ranked
I've had good luck with "Permatex Thread Sealsnt with PTFE" p/n 80632.
__________________
"When Injustice becomes Law,
Rebellion becomes Duty." T. Jefferson
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