Seeing as how Im making an intake manifold and such I have decided to use duel fuel rails and a FPR. Got a question about the rails tho, seeing as how Im gonna need two I will just buy universal ones. How would I get the injectors to stay in the rails and have no leaks?? I cant thihnk of anything except O-rings. This is one of two problems I am having, the other is posted as Help!! but its solved for the most part. I need input and when I get all this done I will post pics and tell if there is any noticable power gain, should be cause its a hole new intake setup but who knows right.. Thanks, Baron

 

The solution is in the OEM set-up.

The way the rails get retained are how you keep injectors "in the rail".
I'm going to be forward here and say that maybe you should hold off on building this intake for a bit until you do a little more research on how to assemble a custom manifold.

 

Where should I start looking?? I was thinking of having the hole in the rail for the injector tapered but not sure how well that will work. I dont know where to look for research on my project thats why Im asking questions on here. I dont know anyone who has done this either so its a little had for me to obtain information. Thanks for being honest and all. Like they say "Haste makes waste" Pretty sure thats the saying Im looking for.

 

look at how Rance, Edelcrotch, & other aftermarket mpi/sfi setups are. When done right, you'll still only need one (a)fpr.

 

Just look at how the injectors are sandwhiched between the rail and the intake itself. If you're worried about plumbing, look at divorced fuel rail systems, like the TPI, GenIII 660 (3100/3400), Ford 5.0L and aftermarket systems like Holley, and many others that will also show you how it's done.

IIRC SDS has a very in depth article on thier site for this.

www.sdsefi.com

www.grapeaperacing.com

 

I love the idea of building your own intake, so I don't want to ruin the project but- do you have access to a flow bench? It's very possible that you could build an intake that looks great but flows less air than a stock intake does.

I seem to remember somewhere an internet article about using water to simulate an air flow bench... not sure where the article is OR if it was accurate at all

 

Do not take this as an insult or an attack...

But if you do not know how to restrain the fuel rails, and are pushing for 2 individual rails... you really have no business making them, or an intake.

If you are looking for info about what are the basics, head to a GOOD bookstore and look in automotive section. I am sure there are quite a few on fuel injection concepts and intake design concepts.

 

Made an intake for a carbed engine about a year ago. I wanna try making one for my car since the Trueleo ones just suck IMO but hey thats me. If it works I could put up picks blueprints and all that good stuff.