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How do I make my Returnless rails work on a Return fuel system truck?

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Old Jan 25, 2008 | 10:30 AM
  #11  
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It worked great for 2 times I got one on my 69 camaro and I put one on my 99 when I swapped to a ls6 intake.The camaro fuel rail was returnless and my truck had a return.I simply plugged this sucker on the end of my fuel lines(engine bay) and made a short hose out of it to my fuel rail.I'm also running a walbro 255 lph in both vehicles.
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Old Jan 25, 2008 | 10:33 AM
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Originally Posted by 1969x11
It worked great for 2 times I got one on my 69 camaro and I put one on my 99 when I swapped to a ls6 intake.The camaro fuel rail was returnless and my truck had a return.I simply plugged this sucker on the end of my fuel lines(engine bay) and made a short hose out of it to my fuel rail.I'm also running a walbro 255 lph in both vehicles.
nice. do you have a pic?
did it seem like you were putting any extra pressure on the filter regulator? The complaint was that the part would break if there was any load from the fuel lines???
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Old Jan 25, 2008 | 10:41 AM
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I used my stock fuel rails on a TBSS LS2 manifold....had to make my own mounts for them but all in all it worked out pretty well. One thing I would explore in your situation is possibly using the truck rails with a Vette/Fbody crossover tube...not sure if it would fit though. Just an idea. Also might check out some of the aftermarket fuel rails with the steel braided crossover and external boost referenced regulator. Those would be pretty pricey though.
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Old Jan 25, 2008 | 02:18 PM
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I have L92 truck rails, that fit the L92 truck intake. The problem is not the rails just hooking them up on a 2003 that has two lines up to the fuel rail, and I dont want to hack anything in there. I have looked at my extra set of return rails with the reg and it wont work.
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Old Jan 25, 2008 | 02:44 PM
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Got any pics of the rails?
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Old Jan 25, 2008 | 03:18 PM
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Originally Posted by OnyxSilveradoSS
thanks again. after I got the right name for what I was looking for I found this
with the part numbers and pics

I even found some limited discussion about putting it in the engine bay, close to the fuel rails. With trucks I can see it being easier b/c of the extra room under the hood. When I find pieces to this L92 puzzle I am putting together I get excited that I might actually make it work...now getting the cam might be another story
The only thing about this method is that the cars are referenced to atmosphere, and I believe that the trucks are referenced to manifold vaccum. I didn't see a port to connect to manifold vaccum on that regulator/filter. I saw a member here that used an aftermarket regulator to do the same thing, but gave you the added features of it being adjustable, and it was referenced to the manifold vaccum.
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Old Jan 25, 2008 | 03:44 PM
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L92 single/return less


LQ9 return type


I see the port for vaccum ref, but if I swap to the vette reg/filter them I dont need it and can cap off/remove this on my engine?
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Old Jan 25, 2008 | 04:26 PM
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I am using a 99 Corvette filter mounted on top of the engine and plugged into the two lines that normally connect to the return style fuel rail. I don't believe I have a picture anywhere.
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Old Jan 25, 2008 | 04:35 PM
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If your stock rails with the return port on them won't fit, then I think you're gonna be stuck with a set of aftermarket rails and an external regulator if you want it to have it boost/vacuum referenced. That intake manifold looks almost identical to mine. Let me dig up some pics of what I did...maybe it will work for you.
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Old Jan 25, 2008 | 04:44 PM
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I ground the stock mounting tabs off the stock rails, and created my own with strips of aluminum from the hardware store. The crossover tube barely clears. Yours may be different....looks like your injectors are not tilted as much and some of the mounting points are different, but it's worth a shot.






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