V6 (1994-2004) Mustangs Technical discussions on the 3.8L and 3.9L V6 torque monsters

split port swap fuel rail how to:

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Old Nov 20, 2013 | 08:16 PM
  #1  
warthogdriver's Avatar
warthogdriver
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From: mi
Default split port swap fuel rail how to:

split port swap fuel rail how to,
backyard mechanic version.

if this has been done before, sorry...if not then i hope you find this useful. also before you dive into this there are options for just buying a rail like the windstar (from what i have read). this is for the owner who happens to have both rails and is a do it yourselfer.

parts:

single port fuel rail
splitport fuel rail
new fuel line (FC332-4 AQP made by Areoquip) length varies by project
factory hardware to mount rail to lower intake


online resources:

Thunderbird Fuel Rail

the above article was done by MN12 Performance Inc. and covers replacing the flexible lines on the fuel rail itself. i found it very helpful for this task.

tools:
utility knife
drummel with cutting discs
measuring tape


basically what needs to be done is to make a hybrid fuel rail that will mount in the split port manifold while keeping the return line of the single port system.

the pictures have notes and cut lines on them to follow so you can get an idea of what i did. the red lines and arrows indicate where i cut the rails.

1. take both fuel rails and CAREFULLY remove all the flexible lines (using the how to on TCCoA).

2. when cutting the metal portions of the rail do it slowly and be sure not to cut the actual tubular section of the rail..or you will have some serious leak issues. after cutting the metal portions i used the file to smooth the surface to my liking.

3. cuts to be made on the single port rail..follow the red lines
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3. cuts to be made on the split port rail..follow the red lines
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4. now that you have the cuts made, carefully remove the flexible portions of the rails using the how to i ref. on TCCoA.

5. the combined rails..sorry for the lack of close up pics...doing the write up almost a year after the actual job.
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look at the notation on this pic..the return line was not cut at those two circled points..i used sections of hose to act as isolators on the clamps i made.

6. the completed rail.
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note that the rear line has yet to be connected on the lower left of the pic. the blue and red lines added show placement.

7. i kept the fuel reg off the single port line and then blocked off the one on the split port rail.
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what i did was:
remove the split port regulator
cut lower portion of the regulator off to be placed back in hole
fab'd a aluminum plate to block it off
used jb weld on top of the "plug" then added the alum plate on top and bolted in place.

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here it is in the car..been a full year and no leaks. i retained the o ring on the end of the reg sensor when i cut it off.

hope that helps someone...should have taken more pics along the way.
Old Dec 7, 2013 | 07:48 PM
  #2  
warthogdriver's Avatar
warthogdriver
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Joined: Apr 2010
Posts: 289
From: mi
Default

Is there a tech section to stash this in?
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