EFI Fuel Plumbing
EFI Fuel Plumbing
(OP)
All,
Long time no visit. I am working on a flat 6 cylinder (Porsche) adding a second set of injectors. Due to location a "fuel rail" is impractical and this prompts my question: Are short fuel lines (-6) from a central supply block a big problem? I do understand the fuel in this line is "trapped" as it will not be in the return loop for the regulator but are there any other issues? This is a track only application.
Thanks in advance,
PFM
Long time no visit. I am working on a flat 6 cylinder (Porsche) adding a second set of injectors. Due to location a "fuel rail" is impractical and this prompts my question: Are short fuel lines (-6) from a central supply block a big problem? I do understand the fuel in this line is "trapped" as it will not be in the return loop for the regulator but are there any other issues? This is a track only application.
Thanks in advance,
PFM





RE: EFI Fuel Plumbing
Bill
RE: EFI Fuel Plumbing
RE: EFI Fuel Plumbing
There will be a return line from a distribution block(s) located within 3 to 4 inches of the injector. So fuel line from pump to distribution block, hose to second bank distribution block, hose to regulator and bypass to tank. From each block are three lines 3 to 4 inches long -6 hose to the individual injector. The question is does anyone see this as a problem versus a conventional fuel rail attached to the injector. Fuel pressure will be about 50 PSI.
Thanks for the replies,
I hope this makes the question clearer.
PFM
RE: EFI Fuel Plumbing
Regards
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RE: EFI Fuel Plumbing
I have seen you on this board for years, thanks for the reply. I have one of those early flat fours with FI. They could not be considered high performance and this application is. I have heard all kinds of stories about fuel delivery problems, resonance troubles etc. just trying to find truth.
PFM
RE: EFI Fuel Plumbing
RE: EFI Fuel Plumbing
It has higher fuel pressure and higher fuel flow and probably higher air circulation in the engine compartment due to higher speed and higher rpm.
Regards
Pat
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RE: EFI Fuel Plumbing
ISZ