I will try to list the build in detail. We have an accel Dfi kit #74030. But don't know exactly if we will be able to use it. It would save me money from having to buy the megasquirt stuff.
at the shop we have an spare 302 sitting around and I took off the old carb intake and put this one just for mock-up to see if it will clear the distributor and looks pretty good the plan is to put a Y fitting in front of the fuel rails and then run lines to the regulator in the back of the fuel rails and a return line to the tank
I think this is the fuel regulator that Bry had in his stuff that we'll use http://www.summitracing.com/parts/AEI-13101/
Good looking setup, what type of throttlebody are you going to use? something like a rons toilet with a 90 degree elbow or a 4v style throttle body that bolts on like the old carburetor did? And as for running fuel lines wouldn't it be easier to run the fuel line into the back of one of the fuel rails, run a braided hose around the distributor, and put the fuel pressure regulator on the back of the other line? Something like this...
the theory we are following in the routing of the fuel lies is that with the lines splitting at the front of the motor then going through the rails and joining back together at the regulator, will guarantee that the injectors get as even volume as possible. when you accelerate hard the fuel in the lines has to fight that force to flow forward. having the fuel that goes through the fuel rails both going front to rear will help guarantee that fuel volume is where you need. when the fuel injectors open they take volume out of the rails. with the rails being ran in parallel there is supposed to be less of an volume drop on the injectors in the end of the line. when the rails are in series as pictured above the last injector will have less fuel available than the first injector in line.
I know the basic theory of it and I have seen the configuration setup before and I am very doubtful there is any advantage in using a system like that. When you look at how the fluids flow through lines you start too see that when you start using splitters and diverters you are essentially creating choke points and potentially slowing the fuel down too split it too each rail, you want as few of restrictions as possible to get as much fuel too the injectors as you can. Also since you are using the same pump and the same fluid volume flows through the system as you would in a single line setup you still have the potential of starving the injectors at the back of the rail, but in the split fuel lines you are showing you are potentially starving the back cylinders on both banks instead of the back cylinder on one bank. Only so much fluid volume can fill the lines, if you are using one line or two as long as they maintain the same area it doesn't matter if it feeds into one or two there is only so much fluid that can be in a system. The problem with a setup like that is the fluid flows too the easiest path, so if there are any restrictions in one side or the other it could potentially starve the whole bank from fuel and you will still have it regulated out with the pressure regulator setup, this is a very big pain to diagnose. But either way as long as your fuel level exceeds the amount of fuel that can be fed through the injectors then you should have minimal continuous pressure drop from the first injector in the series too the last injector in the series.
So here is the update . . . I jacked the car up today and here is the pickup and return that our fabricator installed on the mustang tank long time ago. Passenger side is 10AN and the other 12AN. As you can see I am using the stock pickup to run the fuel system right now with a black holley electric pump, which is at the very top of this pic.
I'm trying to decide whether I should run hard lines under the car (on the feed side) or shell out $150-200 and get cloth braided or even steel braided lines. The hard line is probably $30.
so I get the stuff in the mail from summit and the hose I purchased were summit brand rubber hoses for the fuel. the website says they are nhra approved but then when it arrived the instructions says nhra approved but not recommended to be yet for fuel lines....wheats that all about?
So looks like after some research the hose that is advertised as twist tite is NHRA approved, but not for fuel line purposes. Summit doesn't try very hard to make the distinction on their website which is a shame because it's a big source of confusion for everyone. So I will have to return it.
Bryant and I put a lot of time into figuring out all the right parts but looks like we gonna have to make some changes. I should mention that when we ordered the hose there was no mention of the house not being recommended for fuel line usage. Somehow I was able to find the disclaimer on their website after the fact.
