Re: FI Tech fuel injection fuel lines
[Re: CSK]
#2201172
11/23/16 01:25 PM
11/23/16 01:25 PM
|
Joined: Nov 2006
Posts: 4,707 Star Idaho
67vertman
master
|
master
Joined: Nov 2006
Posts: 4,707
Star Idaho
|
This is the setup I am running on my EFI system. I am running F&B 6 pac with 500 hp. No issues.
My Monster are real!
Living within your means makes life pretty easy.
|
|
|
Re: FI Tech fuel injection fuel lines
[Re: fastmark]
#2201326
11/23/16 05:54 PM
11/23/16 05:54 PM
|
Joined: Sep 2007
Posts: 14,889 up yours
Supercuda
About to go away
|
About to go away
Joined: Sep 2007
Posts: 14,889
up yours
|
The regulator will control the flow as long as the supply and/or return lines are not too small. So if you are thinking one day you might step it up consider upsizing the lines since you are buying new anyway, assuming the cost increase isn't too stupid.
They say there are no such thing as a stupid question. They say there is always the exception that proves the rule. Don't be the exception.
|
|
|
Re: FI Tech fuel injection fuel lines
[Re: fastmark]
#2201385
11/23/16 07:30 PM
11/23/16 07:30 PM
|
Joined: Jan 2003
Posts: 25,726 Rio Linda, CA
John_Kunkel
Too Many Posts
|
Too Many Posts
Joined: Jan 2003
Posts: 25,726
Rio Linda, CA
|
FI Tech specifies a #6 (3/8") return line.
The INTERNET, the MISinformation superhighway
|
|
|
Re: FI Tech fuel injection fuel lines
[Re: John_Kunkel]
#2201399
11/23/16 08:06 PM
11/23/16 08:06 PM
|
Joined: Jan 2003
Posts: 28,067 Irving, TX
feets
Senior Management
|
Senior Management
Joined: Jan 2003
Posts: 28,067
Irving, TX
|
FI Tech specifies a #6 (3/8") return line.
This is the proper thing to do. Remember that you'll be returning a pretty good volume of fuel (far more than you consume outside of WOT). Pushing that much volume through a 1/4" line means more pressure and velocity are required to get the job done. That tiny return is like putting your thumb over the end of a water hose. Pressure is going to build up. The pump will be working hard instead of idling with a large return line.
We are brothers and sisters doing time on the planet for better or worse. I'll take the better, if you don't mind. - Stu Harmon
|
|
|
Re: FI Tech fuel injection fuel lines
[Re: fastmark]
#2201668
11/24/16 05:16 AM
11/24/16 05:16 AM
|
Joined: May 2008
Posts: 5,399 Aurora, Colorado
451Mopar
master
|
master
Joined: May 2008
Posts: 5,399
Aurora, Colorado
|
I was reading the software setup manual, and the "Go EFI" units have a Pulse Width Modulated fuel pump driver, but it looks like it does not monitor the fuel pressure, it looks a user pre-set TPS and RPM values, that if the engine is under the specified RPM or TPS value, then the pump drivers applies a user defined PWM percentage to set the pump for a lower flow rate.
On my Coronet (Edelbrock XT EFI), I am running -6 AN hose supply and return, except for about 6" to/from the Spectra EFI fuel tank that uses 3/8" supply and 5/16" return. It only has a 225 LPH pump, but I think the line sizes would be fine even with a larger pump.
Also, they have a $100 rebate going on for the FiTech units
Last edited by 451Mopar; 11/24/16 05:17 AM.
|
|
|
Re: FI Tech fuel injection fuel lines
[Re: thehemikid]
#2202291
11/25/16 01:03 PM
11/25/16 01:03 PM
|
Joined: Jan 2003
Posts: 28,067 Irving, TX
feets
Senior Management
|
Senior Management
Joined: Jan 2003
Posts: 28,067
Irving, TX
|
After a quick call to FITech to be sure that wasn't intentional I'd slam that thing in a collet and poke a bigger hole through it.
We are brothers and sisters doing time on the planet for better or worse. I'll take the better, if you don't mind. - Stu Harmon
|
|
|
Re: FI Tech fuel injection fuel lines
[Re: fastmark]
#2202354
11/25/16 02:43 PM
11/25/16 02:43 PM
|
Joined: Sep 2007
Posts: 14,889 up yours
Supercuda
About to go away
|
About to go away
Joined: Sep 2007
Posts: 14,889
up yours
|
It's my understanding that -6AN is supposed to be 3/8" internal diameter which is .375". Not even sure you can drill that return fitting that big. What you have is barely bigger than 3/16", or -3AN.
Last edited by Supercuda; 11/25/16 02:45 PM.
They say there are no such thing as a stupid question. They say there is always the exception that proves the rule. Don't be the exception.
|
|
|
Re: FI Tech fuel injection fuel lines
[Re: fastmark]
#2202384
11/25/16 03:24 PM
11/25/16 03:24 PM
|
Joined: Sep 2007
Posts: 14,889 up yours
Supercuda
About to go away
|
About to go away
Joined: Sep 2007
Posts: 14,889
up yours
|
All math aside, it's described as -6 AN, which to actually be a -6 needs a 3/8" passage.
Does it need 3/8"? I dunno, don't care as long as it works.
They say there are no such thing as a stupid question. They say there is always the exception that proves the rule. Don't be the exception.
|
|
|
Re: FI Tech fuel injection fuel lines
[Re: Supercuda]
#2202412
11/25/16 04:20 PM
11/25/16 04:20 PM
|
Joined: Jan 2003
Posts: 25,726 Rio Linda, CA
John_Kunkel
Too Many Posts
|
Too Many Posts
Joined: Jan 2003
Posts: 25,726
Rio Linda, CA
|
The nominal dimension for a common #6 AN fitting is .295".
Whenever a manufacturer specifies a certain line/hose size they are taking into consideration the fitting bore size, especially if they supply the fitting.
The INTERNET, the MISinformation superhighway
|
|
|
Re: FI Tech fuel injection fuel lines
[Re: John_Kunkel]
#2202468
11/25/16 05:40 PM
11/25/16 05:40 PM
|
Joined: Dec 2003
Posts: 1,013 near Kansas City
igozumn
super stock
|
super stock
Joined: Dec 2003
Posts: 1,013
near Kansas City
|
FI Tech specifies a #6 (3/8") return line.
I had emailed Fitech about this situation back in December/January, not sure, and they said the 5/16 return would be fine. So, I went with it and yanked the original 1/4 return. Put a new 3/8 supply line and used the original 5/16 supply as the new return. Haven't experienced any issues that would indicate an issue with the return's size. Edit: Maybe they have changed their "tune", since then? That being said, I noticed one day, many months ago, that I thought the tank was warmer than maybe it should, but haven't dealt with it, nor asked around as to what others are experiencing. Also, in putting together my system, I did find some fittings from various manufacturers, seemed to be a bit smaller than what I thought I was getting. I made sure that if I was running a 5/16 return or 3/8 supply, that it was actually 5/16 or 3/8 (or as close as could be within reason) all the way from the pump to the Fitech.
Last edited by igozumn; 11/25/16 05:54 PM.
|
|
|
|
|