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how are the factory fuel rails constructed

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Old 04-16-2006, 07:25 PM
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Default how are the factory fuel rails constructed

what method is used to solider the tubes together? i am designing a manifold for a supercharger and the fuel rails are too tall. what i want to do is seperate them and solider them back together in a different configuration. i tried a propane torch but that was worthless. any other ideas how to seperate the tubes?
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Old 04-16-2006, 07:30 PM
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A sawzall?
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Old 04-16-2006, 07:34 PM
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if i used a sawzall there wouldn't be much tube left to attach to. the injectors are too close.
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Old 04-16-2006, 07:45 PM
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Do you have a pic we can work with and maybe mark your idea'* on it?
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Old 04-16-2006, 07:52 PM
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I'm sure that they are brazed rather than soldered. Similar method except brazing is done at a much higher temp with an oxyacetylene torch.
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Old 04-17-2006, 12:57 AM
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how can i post pics?[/img]
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Old 04-17-2006, 01:54 AM
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Is your fuel rail black or unfinished? I believe they are stainless steel and welded, not brazed. Give us an idea of what you're up to, and chances are we'll have some solutions for you.

Keep in mind the injectors MUST be firmly clamped in place or the boost charge will eject them from the lower manifold.
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Old 04-17-2006, 02:14 AM
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i don't want to give it all away before i even get a chance to build and try the first model. basicly i am designing a adapter plate for a diffrent compressor setup. the factory rails are taller then i want and i had to modify my design to make them fit under the setup which also will make the setup flush with the top of the hood. i don't want to have to make a hole in the hood to make room. what i need to do is change the stacked design of the existing rails and make them just one tube tall and stacked on the side or flow through around the supercharger which works best. my rails are silver not black. how are the l36 rails setup?
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Old 04-17-2006, 02:40 AM
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L36 rails won't work for you. The injector spacing isn't correct. There is no aftermarket or current market solution. You're totally custom, and believe me, I've been there before. It'* much simpler to EXTEND the rail with custom spacers, but that gets very expensive very quickly.

Your best solution (yes, I know what you're doing) is to cut the rails and flare them at the front and rear supply and return, then use flex fuel tubing with double hose clamps. There is danger here due to the fuel pressures we run, particularly if you end up bumping up your fuel pressure (and you will have to with what you have planned).
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