Recommendation on fuel pressure regulator for return line on dual carb |
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Recommendation on fuel pressure regulator for return line on dual carb |
Tdskip |
Apr 13 2024, 04:36 PM
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#1
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Advanced Member Group: Members Posts: 3,697 Joined: 1-December 17 From: soCal Member No.: 21,666 Region Association: None |
Hi folks end hope everybody’s having a decent Saturday.
I need to button up another project car that was previously (long time ago and original engine long gone) a fuel injection car so it’s got the return line like they all do. It looks like many of you like to use a pressure regulator in the return line, rather than simply capping it off, and I was wondering if there’s a specific regulator that you would recommend or if a Holley rotary dial to select pressure unit is fine to use. Thanks! |
Tdskip |
Apr 17 2024, 05:28 PM
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#2
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Advanced Member Group: Members Posts: 3,697 Joined: 1-December 17 From: soCal Member No.: 21,666 Region Association: None |
Thanks for the discussion and all the considerations gentleman, very much appreciated.
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stownsen914 |
Apr 18 2024, 06:36 AM
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#3
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Senior Member Group: Members Posts: 928 Joined: 3-October 06 From: Ossining, NY Member No.: 6,985 Region Association: None |
Interesting points about how it's done on modern cars. Apparently I don't work on those!
One point that may be obvious, but I don't see it mentioned ... if you go with a deadhead arrangement with a regulator pre-carb, make sure you use a low pressure fuel pump designed to work with that plumbing arrangement. EFI pumps are usually designed to work at much higher pressures, and don't work well in a deadhead arrangement when regulated down to 3 psi. |
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