What Size An Fitting For 3/8 Fuel Line

Username	Postal service: What size are the fitting on 3/eight fuel line? (Topic#341271)
carolinakid "10th Year" Gold Supporting Fellow member Posts: 1146 Loc: Erwin NC Reg: 08-27-03 User Info Ship Private Topic View Profile	12-15-16 02:15 PM - Mail#2666244 What size are the brass fitting on a OEM iii/viii fuel line between fuel pump and carb. Thank you E-mail Report

Nick P Dedicated Member Posts: 6107 Historic period: 74 Loc: De Queen, Arkansas Reg: 10-xv-03 User Info Transport Individual Topic View Profile	12-16-16 11:24 AM - Post#2666363 In response to carolinakid carolinakid Said: What size are the brass fitting on a OEM 3/8 fuel line between fuel pump and carb. Thank you 6 or V8? Fitting at the pump or plumbing fixtures in the carb? Or, both? See V8: http://gmpartswiki.com/getpage?pageid=67145 Or: Edited by Nick P on 12-16-16 11:34 AM. Reason for edit: No reason given. Email Written report
raycow DECEASED Posts: 27999 Loc: San Francisco, CA Reg: 11-26-02 User Info Send Individual Topic View Profile	12-16-16 12:09 PM - Post#2666372 In response to carolinakid If you mean the male thread on the inverted flare nut, the thread size is v/8"-eighteen. If this is not the part you are asking well-nigh, please inquire again, describing it in as much detail every bit you tin can. Ray Those who cull an automatic manual want transportation. Those who cull a manual transmission want to drive. Electronic mail Report
YOUNG57 Frequent Contributor Posts: 1332 Loc: Tennessee Reg: 12-06-10 User Info Transport Private Topic View Contour	12-sixteen-16 09:09 PM - Post#2666429 In response to carolinakid Past "brass fittings on a OEM 3/8 fuel line" I guess you lot mean the connectors (adapters) betwixt the 3/8 fuel line and the fuel pump or carb??? The 3/8 flare line nut has a v/8-18 machine screw thread and the fuel pump has a i/4", 3/viii" or 1/2" NPT tapered pipe thread depending on which pump. The diagram above is for a two butt carb and they only had five/16" fuel lines. Merely dual quad and FI cars came with 3/8" fuel lines and their fuel pumps had ½" NPT inlets and outlets. Then if you take a 3/eight" fuel line and an original fashion fuel pump you would need a 3/viii" flare line (v/8-xviii nut) to ½"NPT contumely adaptor (connector). Just virtually likely you have a smaller aftermarket pump with a 1/iv" (or three/8") NPT outlet. I hope this helped. Email Study
carolinakid "tenth Year" Gold Supporting Member Posts: 1146 Loc: Erwin NC Reg: 08-27-03 User Info Send Individual Topic View Profile	12-16-16 x:06 PM - Post#2666433 In response to YOUNG57 Thanks all. Before I die I might just be able to understand pipe thread sizes. The five/8-18 thread was what I was needing to know. I have this fuel pump which has a 1/8 NPT outlet pigsty. https://www.danchuk.com/ItemForm.aspx?Item=091&... Bought plumbing equipment for pump with one/8 NPT male with 5/eight-18 female person for 3/eight fuel line thinking that'southward what I needed for my Eldebrock fuel line with a 3/viii NPT. I know now I demand a one/8 NPT male X 3/eight NPT female adapter. Thanks for setting me straight. Edited past carolinakid on 12-xvi-16 10:08 PM. Reason for edit: No reason given. Email Written report
YOUNG57 Frequent Contributor Posts: 1332 Loc: Tennessee Reg: 12-06-10 User Info Send Private Topic View Profile	12-17-sixteen 08:53 PM - Post#2666550 In response to carolinakid If you lot take a fuel pump with a 1/viii NPT outlet and a 3/8 fuel line with 5/viii-eighteen threaded basics. The "plumbing equipment for pump with ane/viii NPT male with 5/8-xviii female person for iii/eight fuel line" should be the only fitting (adaptor) y'all demand. You should non need a "one/8 NPT male X 3/8 NPT female" reducer. Your 1/viii NPT male with 5/8-xviii female adapter should spiral right into your pump and your 3/8 fuel line should screw right into that adapter. Y'all should use piping dope or Teflon record on the adapter's pipe thread going into the pump but nothing on the fuel line nut. A quick caption of pipe thread sizes. NPT (tapered) pipes are classified by nominal within bore of the pipe in inches: ane/8, ¼, 3/viii, ½ and so on. Simply the threads are cut on the outside of the pipe so the actual thread size will exist a much larger diameter: 0.405-27, 0.54-eighteen, 0.675(5/8)-eighteen, and 0.84-xiv respectfully. Piping threads are tapered and steel fuel/brake line nuts are direct non-tapered auto thread and accept a different number of threads per inch (pitch) so y'all cannot screw ane into the other, y'all accept to use an adapter. E-mail Written report
carolinakid "10th Year" Gilded Supporting Member Posts: 1146 Loc: Erwin NC Reg: 08-27-03 User Info Send Private Topic View Contour	12-eighteen-sixteen 02:36 AM - Mail service#2666570 In response to YOUNG57 Young 57, This is the fuel line I have, Notice the 90 degree elbow has a three/8 NPT. See Eldebrock PN 8123 Every bit you explain the 3/8 NP Threads on the Eldebrock Fuel Line is cut different than the v/8-eighteen thread on the plumbing equipment. Which was my trouble. This is how I solved the trouble: Russel Performance PN-660830 ninety degree elbow with 1/eight NPT on i stop for fuel pump and AN-six For fuel line on the other end. Gave links to this items only they did not open correctly then I deleted them Cheers Again, Edited by carolinakid on 12-18-sixteen 02:54 AM. Reason for edit: No reason given. Electronic mail Study
YOUNG57 Frequent Contributor Posts: 1332 Loc: Tennessee Reg: 12-06-10 User Info Send Private Topic View Profile	12-eighteen-16 08:21 AM - Post#2666597 In response to carolinakid carolinakid Said: Young 57, This is the fuel line I have, Notice the xc degree elbow has a 3/eight NPT. Meet Eldebrock PN 8123 As you explicate the 3/viii NP Threads on the Eldebrock Fuel Line is cut different than the 5/eight-18 thread on the plumbing fixtures. Which was my problem. This is how I solved the problem: Russel Performance PN-660830 xc degree elbow with 1/8 NPT on one end for fuel pump and AN-half dozen For fuel line on the other end. Gave links to this items only they did not open up correctly and then I deleted them Thanks Again, OOOH, now I sympathise. I thought yous were using a rigid steel tubing with inverted flares and nuts. Y'all are correct, the -6AN end is a iii/8 NPT and requires a -6AN adapter for information technology. Sounds like you're on your way, skillful luck. Email Report