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about aftermarket fuel rails

This is a discussion on about aftermarket fuel rails within the External Engine forums, part of the LSx Technical Help Section category; im looking into purchasing a Professional Products Basic fuel rail kit from another member on here...he says its a complete ...

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    Senior Member SteveCZ28's Avatar
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    about aftermarket fuel rails

    im looking into purchasing a Professional Products Basic fuel rail kit from another member on here...he says its a complete bolt on fuel rail kit minus the fuel regulator...im curious if this would require a special regulator? ive never done something like this so any input would be helpful...thanks in advance guys


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    cutting and welding mark21742's Avatar
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    Looks exactly like my rails. Your regulator is built into the fuel pump so this should be plug and play.

    Also do your self a favor and buy the fuel line removal tool to get your old rail lose

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    Sold: LS1 '85 El Camino ls1camino's Avatar
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    I have that setup, and it is almost a direct bolt up. There is a little bit of fabrication, but nothing you can't handle I hope. The plug that SHOULD come with the rails (I say "should' cause it's an option when you purchase it) is called a "-6 to GM Fitting Inlet Line". What I did was take a 3 inch piece of rubber fuel line tubing and connected that fuel rails directly to the hard line that comes up by the driver's side wheel well. Like I said, I hope this isn't outside of you skill ability

    These are the three different setups I was considering when I was going to do my H/C/I Swap. I ended up going with the first one. The gray pod is a Fuel Pressure Sensor for a gauge on my A-Pillar. The mechanical fuel pressure gauge is a cheapy I bought from Speed Inc. that fit perfectly in the plug that comes with rails. I had to buy a separate adapter for the sensor.







    Here are some pictures with it installed.








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    Join the PHK @ thephk.org Sommer86@6LE's Avatar
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    Hey LS1 Camino, your car is the one i saw a few months back when I was figuring how to install my rails...I decided on the same set up as you.......I just haven't installed them yet. How long should it take, roughly?

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    Senior Member SteveCZ28's Avatar
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    awesome guys, thanks for the helpful information, i really appreciate it

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    cutting and welding mark21742's Avatar
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    Quote Originally Posted by Sommer86@6LE View Post
    Hey LS1 Camino, your car is the one i saw a few months back when I was figuring how to install my rails...I decided on the same set up as you.......I just haven't installed them yet. How long should it take, roughly?
    Took me about an hour to fab up 4 brackets out of sheet metal, paint them and install.
    I mounted the rails to the brakets and the brackets to the bolts that hold the intake to the heads

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    Slow'er'Ass Mr. Luos's Avatar
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    It appears that that the PP rails will fit factory manifolds?
    Is that correct?


    This is my set-up.
    FAST 90 with LS1Speed rails.
    I am actually going to move the 'T' to the front of the intake...



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    Sold: LS1 '85 El Camino ls1camino's Avatar
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    Quote Originally Posted by Sommer86@6LE View Post
    Hey LS1 Camino, your car is the one i saw a few months back when I was figuring how to install my rails...I decided on the same set up as you.......I just haven't installed them yet. How long should it take, roughly?
    Um...was about 5 minutes for me, cause the engine was already out of the car. In the car, maybe half an hour

    Quote Originally Posted by mark21742 View Post
    Took me about an hour to fab up 4 brackets out of sheet metal, paint them and install.
    I mounted the rails to the brakets and the brackets to the bolts that hold the intake to the heads
    They come with brackets and bolts that mouth to the original mounting positions.

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    cutting and welding mark21742's Avatar
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    Quote Originally Posted by ls1camino View Post
    They come with brackets and bolts that mouth to the original mounting positions.
    Ok that makes it easy lol I was mounting mine on my Proflo xt intake

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    Senior Member SteveCZ28's Avatar
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    well il be mounting mine to my factory ls1 intake...hope they allow me to

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    Senior Member SteveCZ28's Avatar
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    ls1 camino, do you remember the size of the plug where you put your fuel pressure gauge in at? i like that idea, and to anyone else, will i need teflon tape for the joints and fittings??

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    cutting and welding mark21742's Avatar
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    Quote Originally Posted by SteveCZ28 View Post
    ls1 camino, do you remember the size of the plug where you put your fuel pressure gauge in at? i like that idea, and to anyone else, will i need teflon tape for the joints and fittings??
    I teflon taped verything. I think the hole in the end of the rail is 9/16" NPT... Mine has an 1/8" NPT hole in the plug for a pressure sensor

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    Member NoscamaroSS's Avatar
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    Teflon tape didnt work for crap on mine, and another one I did. We used some liquid teflon from a plumbing store.

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    Liquid Teflon is the only way to go.

    On AN fittings, its not needed and I don't think its recommended.

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    any power gains with a after market fuel rail system? how much power can a stock ls1 fuel rail feed?

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    Sold: LS1 '85 El Camino ls1camino's Avatar
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    Quote Originally Posted by SteveCZ28 View Post
    ls1 camino, do you remember the size of the plug where you put your fuel pressure gauge in at? i like that idea, and to anyone else, will i need teflon tape for the joints and fittings??
    The plug is 3/8" to 1/8" Reducer that you screw the gauge into.

    http://www.speedinc.com/cont.cfm?cid=C0000547

    Quote Originally Posted by mark21742 View Post
    I teflon taped verything. I think the hole in the end of the rail is 9/16" NPT... Mine has an 1/8" NPT hole in the plug for a pressure sensor
    Quote Originally Posted by NoscamaroSS View Post
    Teflon tape didnt work for crap on mine, and another one I did. We used some liquid teflon from a plumbing store.
    Quote Originally Posted by Hi-Po View Post
    Liquid Teflon is the only way to go.

    On AN fittings, its not needed and I don't think its recommended.
    I used liquid sealant the first time and I sprung a leak on first startup, so I took everything off and used teflon tape and never had a problem.

    Quote Originally Posted by garygnu65 View Post
    any power gains with a after market fuel rail system? how much power can a stock ls1 fuel rail feed?
    No power gains. you buy them to support mods like a H/C/I Swap so you don't fuel starve your engine.

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    Member qwik219d9's Avatar
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    Quote Originally Posted by ls1camino View Post
    I have that setup, and it is almost a direct bolt up. There is a little bit of fabrication, but nothing you can't handle I hope. The plug that SHOULD come with the rails (I say "should' cause it's an option when you purchase it) is called a "-6 to GM Fitting Inlet Line". What I did was take a 3 inch piece of rubber fuel line tubing and connected that fuel rails directly to the hard line that comes up by the driver's side wheel well. Like I said, I hope this isn't outside of you skill ability

    These are the three different setups I was considering when I was going to do my H/C/I Swap. I ended up going with the first one. The gray pod is a Fuel Pressure Sensor for a gauge on my A-Pillar. The mechanical fuel pressure gauge is a cheapy I bought from Speed Inc. that fit perfectly in the plug that comes with rails. I had to buy a separate adapter for the sensor.

    Click for full size

    Click for full size

    Click for full size

    Here are some pictures with it installed.

    Click for full size

    Click for full size

    Click for full size

    Click for full size
    did those solid motor mounts create any vibrations issuses?

    also what that red piece just under the cylinder head exhaust ports?

    Thanks

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    Senior Member SteveCZ28's Avatar
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    i got to looking. and have a few more questions about the aftermarket rail install...my factory rails have a regulator on them, but obviously the aftermarkets dont...will i still be able to use these? or how exactly will that work?

  19. #19
    Member NoscamaroSS's Avatar
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    You need to get the ones that come with the regulator then.

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    Slow'er'Ass Mr. Luos's Avatar
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    Quote Originally Posted by SteveCZ28 View Post
    i got to looking. and have a few more questions about the aftermarket rail install...my factory rails have a regulator on them, but obviously the aftermarkets dont...will i still be able to use these? or how exactly will that work?
    That bell looking thing that sits between the rails isn't a regulator really. It basicly attempts to keep the pressure even on both sides.
    I just got rid of it.

    The fuel pressure regulator is in the rear of the car for a stock system.

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