using a return line
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On The Tree
Joined: Aug 2005
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using a return line hi guys, im new here. my current project is a 1953 chevy 2 door. ive got a 02 ls1 from a camaro that im working on right now. i was just wondering if anyone has used a 97 vette fuel rail system with the return on it. i saw one for sale the other day, and thought maybe i could use it. ive seen aeroquip makes a fitting to attach braided line to hard line, and was wondering if this would work. my only concern is the regulator. is there a way to eliminate the regulator?
Joined: Nov 2001
Posts: 1,707
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From: Anderson, Indiana
You have to use a regulator in some form to regulate the fuel pressure.
You can use the 97-98 Vette fuel rail (regulator in the rail).
You can use the 99 and up Vette filter/regulator assembly and mount it wherever you want.
You can use an aftermarket adjustable fuel pressure regulator and mount it wherever you want.
Each of these methods allows you to "create" a return line so that you can maintain the needed 58 psi and send the excess back to the fuel tank.
With any of these methods you can hook up with aftermarket fittings and use braided line if desired.
You can use the 97-98 Vette fuel rail (regulator in the rail).
You can use the 99 and up Vette filter/regulator assembly and mount it wherever you want.
You can use an aftermarket adjustable fuel pressure regulator and mount it wherever you want.
Each of these methods allows you to "create" a return line so that you can maintain the needed 58 psi and send the excess back to the fuel tank.
With any of these methods you can hook up with aftermarket fittings and use braided line if desired.
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91 Z28 LS2 408CI, LS9 Supercharger, LPE GT7 cam, Yank3000, 3450 raceweight.
Latest numbers: 9.71 ET, 141.42 MPH, 1.40 60' , 610 RWHP Mustang Dyno
www.speartech.com
91 Z28 LS2 408CI, LS9 Supercharger, LPE GT7 cam, Yank3000, 3450 raceweight.
Latest numbers: 9.71 ET, 141.42 MPH, 1.40 60' , 610 RWHP Mustang Dyno
www.speartech.com
TECH Regular
Joined: Jan 2004
Posts: 426
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From: Austin, TX
My thought are, why bother? The returnless fuel rail on the 02 works just fine, and is a whole lot less work in my opinion. It also makes for a cleaner looking installation with less lines in the engine compartment. There may be some advantages of running the return line ona full gonzo race engine, but the General thought that the single line worked good enough to put it on the late model F bodies and Corvettes. Just use the GM filter regulator back by the tank, and run the single line forward! I think the only reason that places like S&P push the double line system so much, is that they make a lot of money converting the fuel rails. I never have been able to see any good reason for it.
Regards, John McGraw
Regards, John McGraw
Launching!
Joined: Dec 2004
Posts: 274
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From: Kansas City, MO
Originally Posted by yodawagon
hi guys, im new here. my current project is a 1953 chevy 2 door. ive got a 02 ls1 from a camaro that im working on right now. i was just wondering if anyone has used a 97 vette fuel rail system with the return on it. i saw one for sale the other day, and thought maybe i could use it. ive seen aeroquip makes a fitting to attach braided line to hard line, and was wondering if this would work. my only concern is the regulator. is there a way to eliminate the regulator?
Others have use the dual line setup but with that setup you have to run two lines fuel feed and return from the fuel rail plus install a fuel pressure regulator.
Both ways are correct. Just decide which one is correct for your application.
In my situation I mounted the FFR near the tank and ran the return line directly back to the tank with a short line. I am using the stock fuel vent line and the stock single fuel line to the fuel rail. I then only had to route a flex line with the proper quick disconnect to the fuel rail. I did add a extension hard line to a custom location before I changed to the flex line.
I hope this helps. John Bzdel did the duel fuel line setup on his motor, you can read how he did his swap on his website. He has links all over this forum to his website.
Thread Starter
On The Tree
Joined: Aug 2005
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well this is what im doing: a fuel cell in the trunk, run a line to a fuel pump, run that to a ffr, run one line to the rails and one line to the return side of the fuel cell.
does that sound correct?
does that sound correct?
Trending Topics
Joined: Nov 2001
Posts: 1,707
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From: Anderson, Indiana
Yes, it's 10299146.
Here's what it looks like:
Here's what it looks like:
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91 Z28 LS2 408CI, LS9 Supercharger, LPE GT7 cam, Yank3000, 3450 raceweight.
Latest numbers: 9.71 ET, 141.42 MPH, 1.40 60' , 610 RWHP Mustang Dyno
www.speartech.com
91 Z28 LS2 408CI, LS9 Supercharger, LPE GT7 cam, Yank3000, 3450 raceweight.
Latest numbers: 9.71 ET, 141.42 MPH, 1.40 60' , 610 RWHP Mustang Dyno
www.speartech.com
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Verdad Gallardo Joined: Nov 2001
Posts: 1,707
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From: Anderson, Indiana
If using the 97-98 Vette rail with regulator, you don't use any of these other methods. If using the F-body rail or the 99 and newer Corvette rail, there is no regulator, it has been deleted for you. 
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91 Z28 LS2 408CI, LS9 Supercharger, LPE GT7 cam, Yank3000, 3450 raceweight.
Latest numbers: 9.71 ET, 141.42 MPH, 1.40 60' , 610 RWHP Mustang Dyno
www.speartech.com
91 Z28 LS2 408CI, LS9 Supercharger, LPE GT7 cam, Yank3000, 3450 raceweight.
Latest numbers: 9.71 ET, 141.42 MPH, 1.40 60' , 610 RWHP Mustang Dyno
www.speartech.com
Just some FYI. The 02 F body system does not use a return line. However, the return/regulator is part of the fuel pump assembly in the tank. I dont think you can just use an 02 fuel rail without some type of return/regulator between the tank/pump and the fuel rails. Certainly not an expert about this, but I havent seen a system that doesnt use some type of regulator/return.
Teching In
Joined: Aug 2004
Posts: 33
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Does that corvette unit self regulate to 58psi? Or is it adjustable?
I'm going to be using a LS2 with the LS2 intake and 05 fuel rail/injectors. Is this a return less style setup? If so, will that corvette unit be the easiest to use? At what point does that setup become too restrictive?
Thanks
Nick
I'm going to be using a LS2 with the LS2 intake and 05 fuel rail/injectors. Is this a return less style setup? If so, will that corvette unit be the easiest to use? At what point does that setup become too restrictive?
Thanks
Nick
Teching In
Joined: Aug 2004
Posts: 33
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The other thing is how do you go about connecting the lines to that filter/FPR? I have a fuel AN line fuel system that I will be utilizing. Would it be easier/better for me to run a AN filter right after the tank, then run both a feed and return up the car (have) into a FPR, then one to the rail?
Thanks
Nick
Thanks
Nick
Joined: Nov 2001
Posts: 1,707
Likes: 33
From: Anderson, Indiana
Originally Posted by yodawagon
its a 02 f body unit.
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91 Z28 LS2 408CI, LS9 Supercharger, LPE GT7 cam, Yank3000, 3450 raceweight.
Latest numbers: 9.71 ET, 141.42 MPH, 1.40 60' , 610 RWHP Mustang Dyno
www.speartech.com
91 Z28 LS2 408CI, LS9 Supercharger, LPE GT7 cam, Yank3000, 3450 raceweight.
Latest numbers: 9.71 ET, 141.42 MPH, 1.40 60' , 610 RWHP Mustang Dyno
www.speartech.com
Joined: Nov 2001
Posts: 1,707
Likes: 33
From: Anderson, Indiana
Originally Posted by SSmonte
Does that corvette unit self regulate to 58psi? Or is it adjustable?
I'm going to be using a LS2 with the LS2 intake and 05 fuel rail/injectors. Is this a return less style setup? If so, will that corvette unit be the easiest to use? At what point does that setup become too restrictive?
Thanks
Nick
I'm going to be using a LS2 with the LS2 intake and 05 fuel rail/injectors. Is this a return less style setup? If so, will that corvette unit be the easiest to use? At what point does that setup become too restrictive?
Thanks
Nick
Yes, the LS2 is very similar to the LS1 fuel rail; just a single feed line, so the Vette filter/regulator is a good way to go. Or you can go with an aftermarket adjustable regulator which just comes with threaded holes so you can plumb it up any way you like.
The Vette filter/regulator isn't necessarily the easiest to use, but it is by far the cheapest.
It will support quite a bit of power since it comes stock on the Z06 and guys are modifying those to some pretty decent drag times.
__________________
91 Z28 LS2 408CI, LS9 Supercharger, LPE GT7 cam, Yank3000, 3450 raceweight.
Latest numbers: 9.71 ET, 141.42 MPH, 1.40 60' , 610 RWHP Mustang Dyno
www.speartech.com
91 Z28 LS2 408CI, LS9 Supercharger, LPE GT7 cam, Yank3000, 3450 raceweight.
Latest numbers: 9.71 ET, 141.42 MPH, 1.40 60' , 610 RWHP Mustang Dyno
www.speartech.com
Joined: Nov 2001
Posts: 1,707
Likes: 33
From: Anderson, Indiana
Originally Posted by SSmonte
The other thing is how do you go about connecting the lines to that filter/FPR? I have a fuel AN line fuel system that I will be utilizing. Would it be easier/better for me to run a AN filter right after the tank, then run both a feed and return up the car (have) into a FPR, then one to the rail?
Thanks
Nick
Thanks
Nick
We have the Vette filter/regulator for $50 which includes the male adapter tube as pictured above.
__________________
91 Z28 LS2 408CI, LS9 Supercharger, LPE GT7 cam, Yank3000, 3450 raceweight.
Latest numbers: 9.71 ET, 141.42 MPH, 1.40 60' , 610 RWHP Mustang Dyno
www.speartech.com
91 Z28 LS2 408CI, LS9 Supercharger, LPE GT7 cam, Yank3000, 3450 raceweight.
Latest numbers: 9.71 ET, 141.42 MPH, 1.40 60' , 610 RWHP Mustang Dyno
www.speartech.com
