FI return line.

[Robertstang]

For those of you who have replaced your intake manifold with a four barrel carbureted model what did you do with the return line on the fuel injected gas line? I know I can just regulate the pressure down on the input line. Can I just plug the return line?

 

[spy604]

get a return style regulator and hook it up and use the return. That's what I did and it works great. It also helps keep the fuel cooler and prevent vapor lock

 

[Robertstang]

get a return style regulator and hook it up and use the return. That's what I did and it works great. It also helps keep the fuel cooler and prevent vapor lock

That sounds fine, but where do I find one of those?

 

[spy604]

Here's what I used. You'll also want a gauge for it.

https://www.summitracing.com/parts/hly-12-887

 

[Robertstang]

Here's what I used. You'll also want a gauge for it.

https://www.summitracing.com/parts/hly-12-887

 

[Robertstang]

OK, next question: how do I plumb that to the stock fuel lines that use the little spring clip method of joining the lines?

 

[spy604]

OK, next question: how do I plumb that to the stock fuel lines that use the little spring clip method of joining the lines?

I cut the hard lines off by the frame rail and made new hard lines to the regulator. You could also use braided hose and AN fittings.

I'll try to get a pic tomorrow so you can see what I did

 

[AeroCoupe]

Follow the hard lines that connect to the injector rail down to the sway bar. The ones in the bottom of this picture:

Disconnect them from the body lines and then use these to get 6AN connections so you can then build braided lines to the regulator.

Inlet side P/N - 640900

https://www.summitracing.com/parts/rus-640900

Return side P/N - 640870

https://www.summitracing.com/parts/rus-640870

 

[spy604]

Heres how I did it. Steel hard line connected to the existing feed and return with compression fittings under the frame rail.

 

[Robertstang]

Thank you all for the good advice about the fuel regulator and associated fuel lines. I ordered a regulator online with a return and it came with stainless steel braided hose and AN fittings so I should be good to go, again thank you so much. You guys are great. Rob.