 Fuel Return Line Questions |
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| friethmiller |
 Apr 7 2025, 09:05 PM
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#1
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Senior Member  Group: Members Posts: 845 Joined: 10-February 19 From: Austin, TX Member No.: 22,863 Region Association: Southwest Region 
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My Red '74 (a.k.a Denise) is getting a return line but I'm having issues finding the right size return line hose to go between the tank and the SS line. I have a 5/16" (8mm) rubber hose that looks like it might work. Waited 4 days for Sierra Madre to ship a 7mm ID braided hose, which turned out to be > 8mm (just too loose). (IMG:style_emoticons/default/headbang.gif) I want to go with the 5/16" line but I really think both of these ends should be bubble flared. Has anyone done this? Anything to watch out for? Any other solutions here? I don't need these connections leaking or sliding off.
Also, I have a rubber washer on the return pipe and just a brass washer + screen in the feed. Is this normal? Can I use something like Curil T to help seal these connections? Thanks in advance.   |
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| friethmiller |
Apr 8 2025, 01:01 PM
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#2
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Senior Member Group: Members Posts: 845 Joined: 10-February 19 From: Austin, TX Member No.: 22,863 Region Association: Southwest Region
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Ok, I talked with a guy at lunch that has a lot of experience working on Porsches of all types. He inspected my feed and return tubes and said if I tried to bubble flare the ends they would likely crack. I instantly remembered cleaning a bunch of rust out of the tubes with a bore brush last night (IMG:style_emoticons/default/blink.gif) Yeah... I'm going to just go with the good quality, smooth-band fuel clamps, my existing lines, and reuse the seals that I had in place before.
Again, thanks for all the input here. Onward! (IMG:style_emoticons/default/flag.gif) |
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Posts in this topic
friethmiller Fuel Return Line Questions Apr 7 2025, 09:05 PM
mepstein I go to flaps and get whatever high pressure fuel ... Apr 7 2025, 09:57 PM Superhawk996
I really think both of these ends should be bubb... Apr 8 2025, 08:18 AM
Ron914
I really think both of these ends should be bub... Apr 8 2025, 09:59 AM Dynosoar11 The return is very low pressure. I would not chang... Apr 8 2025, 08:43 AM friethmiller
The return is very low pressure. I would not chan... Apr 8 2025, 10:52 AM Superhawk996 I don’t know what you mean by sealant
Definite... Apr 8 2025, 11:20 AM technicalninja I would use a true circular hose clamp.
Early fue... Apr 8 2025, 12:18 PM friethmiller This might be like wearing two condoms, I don... Apr 10 2025, 05:54 AM |
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