Custom made Fuel Injection

[Simple Six]

Hello everyone,

I finished my fuel injection project, I made the rails and got the fuel lines, fuel pressure regulator installed.

I had to make a bracket for the fuel pressure regulator and I have to make one more bracket to hold the fuel lines. I think that’s just me being over safety conscious

I do have the parts to feed each individual rail but I don’t think I’ll need that set up.

Most people when the do the single port to split port graft parts together to make the factory fuel rail iwork and there’s nothing wrong with that depending on your goals. Mine was to make it factory and as clean as possible

Hers some pictures

 

[tvsn95]

I have built several custom fuel systems on Fox/SN95. Had a fox burn to the ground, due to the rail mounts being slotted too allow easy positioning. BAD IDEA<<BAD. screw loosened and #1 sprayed the dist.
I would Never use rubber hose and clamps,,,,
I have had rubber inner SS braided hoses dissolve inside and leak all over. Very scary. It took a year but they failed.
ONLY Teflon braid for me. AN fittings
Good luck. People in race races die in fires regularly, My Fox only burned the hair off of the right arm of the passenger.
90lbs fuel pressure is nothing too mess with.

 

[Simple Six]

Thanks for the advice and recommendation.

The fuel line I purchased was from NAPA and was pricey but I’m sure as you pointed out not for high pressure performance applications.

I see where people have used custom bent metal lines.

For now this will serve the purpose of I now know where everything will be located and what I exactly need so upgrading to metal lines and fittings should go easier.

Also I will be mindful of the fuel pressure.

For the fuel rails I’ve seen beefy mounting brackets. I will upgrade to those brackets. Now I know where everything is going to be and it all fits.

Remember a lot of this is custom made so I might have to have the fuel rail brackets custom made/machined at a shop with mounts welded on the manifold.

 

[ttocs]

I was wondering if this was something that people have been doing on the regular myself when I saw it as it seemed like it was kind of sort of ok while not being recommended.

 

[96blak54]

At least double up on the hose clamps!

 

[Simple Six]

Where you see the hose clamps those fittings are barbed fittings.

Yes doubling up is a good idea.

For the short term I’m only going to be running at the stock fuel pressure until the engine is broken in.

As I said before the fuel hose I bought from NAPA it was pricey and has good specs for fuel pressure and fuel injection applications etc.

Is it ideal for high pressure high performance race applications ? No if you have a slightly modified car or your car is stock and your fixing a fuel line it will work.

Now your stock crossover fuel rail line and your supply and return fuel hose are lined with PTFE plastic tubing which is designed basically to last the life of the car.

 

[ttocs]

I am familiar with the hoses having replaced them long long ago but it isn't exactly the same as a barb for a hoseclamp. They are made for specific fittings and like I said sure a clamp can work but that is not what it was designed for and that can lead to problems. At the very least I would check occasionally and when it starts to get hot as the metal clamp will expand and the hose might contract a bit leaving space that was not there before.

 

[Simple Six]

I posted “barbed” fittings they are really “beaded” fittings that do require a clamp. Granted there is a specific clamp for a “beaded” fittings.

However a regular hose clamp will work and I have plenty laying around.

So getting the fuel rails made, I made them myself because there isn’t any 3.8 v6 kits offered I could find and getting the fuel lines routed and fuel components located, now I know it will all work physically. After I get the engine started and broken in 500 miles or so I’ll up grade the fuel lines and fittings.

Again switching from the single port to the split port there were so many things that had to be reworked. Fuel system, water lines, vacuum lines relocating sensors, reworking the engine wiring harness etc.