Fuel return line size?

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Old Feb 18, 2003 | 11:00 PM
  #1  
Blown90hatcH's Avatar
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From: Tampa, FL
Default Fuel return line size?

I am working on my fuel system and I have a question about the return line. Goal is approximately around 450-500 whp. Is the stock return line on my 2000 civic hb sufficient enough to be the only return line? I am going to setup the aeromotive 1000hp pump, regulator, 75lb injectors, etc.

Thanks, JAson
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Old Feb 19, 2003 | 01:06 AM
  #2  
rcsivtec07's Avatar
 
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From: miami, fl
Default Re: Fuel return line size? (Blown90hatcH)

i would personally use -10 fuel feed and -8 for your return line for your setup. this setup should be able to produce from 800 to 1000 hp. anyone correct me if i am wrong.
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Old Feb 19, 2003 | 04:03 AM
  #3  
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Default Re: Fuel return line size? (rcsivtec07)

I used a -8 and -6 line respectively, and i run a similiar setup to yours, or the one you are trying to assemble.. I didnt use the stock lines, but rather an -8 feed from the pump and a -6 return from the rail. that should be sufficient enough for your designated HP goal.. good luck
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Old Feb 19, 2003 | 07:21 AM
  #4  
BROOD's Avatar
 
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Default Re: Fuel return line size? (SIXTYdashONE)

I'm also running a 8AN feed/6AN return system. Using the aeromotive pump, fpr, filter, GEM rail, and RC 550's. It works well. I think 10AN feed/8AN return is alittle too much for your needs.

You could probably use the oem return line and a SS feed line. In my case the extra cost to run full SS lines for both feed and return (compared to SS braid on only the feed) was not unmanagable. I ran full SS braid for both lines. Good luck


[Modified by SLPR, 8:24 AM 2/19/2003]
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Old Feb 19, 2003 | 08:00 AM
  #5  
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From: VIRGINIA
Default Re: Fuel return line size? (Blown90hatcH)

I am working on my fuel system and I have a question about the return line. Goal is approximately around 450-500 whp. Is the stock return line on my 2000 civic hb sufficient enough to be the only return line? I am going to setup the aeromotive 1000hp pump, regulator, 75lb injectors, etc.

Thanks, JAson

stock is fine. when you decide to run over 500-525, go with the 10 feed and 8 return.
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Old Feb 19, 2003 | 08:31 AM
  #6  
SuperT's Avatar
 
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From: Rochester, MN, us
Default Re: Fuel return line size? (Blown90hatcH)

I run the aeromotive pump myself and utilize -8 feed and -6 return and it is on a 700hp 2jzgte supra motor...

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Old Feb 19, 2003 | 08:52 AM
  #7  
ekb18c's Avatar
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Default Re: Fuel return line size? (Blown90hatcH)

I run a -6 return and -8 feed line also.
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Old Mar 3, 2003 | 08:52 AM
  #8  
integra6650's Avatar
 
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From: holmdel, nj, usa
Default Re: Fuel return line size? (ekb18c)

what size is the stock supply hard line
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Old Mar 3, 2003 | 08:58 AM
  #9  
Flamenco-T's Avatar
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From: Tejas
Default Re: Fuel return line size? (integra6650)

1/4"
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Old Mar 3, 2003 | 08:59 AM
  #10  
Smashback's Avatar
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From: Ft. Worth, TX
Default Re: Fuel return line size? (rcsivtec07)

-10 and -8 would probably support over 1000 HP and is way bigger than you need. -6 and -4 should support over 600 HP easy. You can always use a larger return...it can't hurt but it can help prevent pressure from building in the return.
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Old Mar 3, 2003 | 09:46 AM
  #11  
autoEXturbo's Avatar
 
Joined: May 2002
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From: FRANK THE TANK, USA
Default Re: Fuel return line size? (Blown90hatcH)

yep, stock will do. I'll be using -10an and stock return once it goes it for the new pump.
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Old Mar 3, 2003 | 09:47 AM
  #12  
b18bturbo's Avatar
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From: Dallas/Miami, FL, USA
Default Re: Fuel return line size? (autoEXturbo)

i run -8 -6 setps usually they cheaper too
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