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mart1n95
Samba Member
Joined: November 01, 2012
Posts: 18
Location: Scotland
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 Posted: Wed Mar 20, 2024 12:06 pm Post subject: Pierburg fuel pump - tap 1/8 NPT port? |
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I have 2 square top Pierburg fuel pumps that I'm rebuilding, however both are missing a brass fuel tube
Has anyone tapped and fitted a 1/8 NPT barbed fuel fitting on these? The fact that the brass tube came off concerns me for it coming off again in the future |
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Dale M.
Samba Member
Joined: April 12, 2006
Posts: 20388
Location: Just a tiny bit west of Yosemite Valley
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| Posted: Wed Mar 20, 2024 12:11 pm Post subject: Re: Pierburg fuel pump - tap 1/8 NPT port? |
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Would seem to me that a threaded "port" with a screw in fitting would be a more permanent repair than a press in fitting....
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mart1n95
Samba Member
Joined: November 01, 2012
Posts: 18
Location: Scotland
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| Posted: Wed Mar 20, 2024 12:16 pm Post subject: Re: Pierburg fuel pump - tap 1/8 NPT port? |
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| Dale M. wrote: |
| Would seem to me that a threaded "port" with a screw in fitting would be a more permanent repair than a press in fitting.... |
Thats exactly my thoughts too, I would rather tap the port rather than press fit another brass tube |
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busdaddy
Samba Member
Joined: February 12, 2004
Posts: 51182
Location: Surrey B.C. Canada, but thinking of Ukraine
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Lt. Crash
Samba Member
Joined: June 04, 2009
Posts: 15
Location: Vineland, NJ
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| Posted: Wed Mar 20, 2024 1:37 pm Post subject: Re: Pierburg fuel pump - tap 1/8 NPT port? |
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I used an M8 tap with 1/4” aluminum fuel lines and JIC4 (AN4) connections. Stainless would’ve been better. Switching to braided stainless JIC6 and an elec fuel pump now though.
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heimlich 
VWNOS.com
Joined: November 20, 2016
Posts: 6627
Location: Houston, Texas
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| Posted: Thu Mar 21, 2024 9:48 am Post subject: Re: Pierburg fuel pump - tap 1/8 NPT port? |
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| mart1n95 wrote: |
I have 2 square top Pierburg fuel pumps that I'm rebuilding, however both are missing a brass fuel tube
Has anyone tapped and fitted a 1/8 NPT barbed fuel fitting on these? The fact that the brass tube came off concerns me for it coming off again in the future |
I have some threaded tubes that look identical to the originals. I have the taps for them as well to tap those holes. Message or email me.
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Last edited by heimlich on Thu Mar 21, 2024 12:16 pm; edited 1 time in total |
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jimmyhoffa
Samba Member
Joined: February 16, 2014
Posts: 1059
Location: St. Louis
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| Posted: Thu Mar 21, 2024 11:27 am Post subject: Re: Pierburg fuel pump - tap 1/8 NPT port? |
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1/16 NPT is spot on! Leaves plenty of meat around the thread too, to resist cracking.
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mart1n95
Samba Member
Joined: November 01, 2012
Posts: 18
Location: Scotland
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| Posted: Fri Mar 22, 2024 11:10 am Post subject: Re: Pierburg fuel pump - tap 1/8 NPT port? |
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| Thanks all for the replies and pictures! I think I'll go for tapping it and using a 1/16th fitting |
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