Feed ports on P7100

ERemington · Mar 25, 2008

Looking into multi-ports for feeds for my injection pump. Just read about 6 pages of this topic looking and from what I can come up with most people use the stock locations for 2 ports, OR use the stock feed, return as a feed, and the front port as their return. What do most people do in this position? Trying to get as much fuel as possible to it right now.

Thanks

Ethan

Bobcat698 · Mar 25, 2008

I use the stock feed as a feed, the return as a return, and the front port as the secondary feed.
Works well with my 13mm pump.

ERemington · Mar 25, 2008

Bobcat698 said:
I use the stock feed as a feed, the return as a return, and the front port as the secondary feed.
Works well with my 13mm pump.

the front port is the hex screw in the center above the rack plug correct?

Bobcat698 · Mar 25, 2008

ERemington said:
the front port is the hex screw in the center above the rack plug correct?

Yep.

ERemington · Mar 25, 2008

Bobcat698 said:
Yep.

I take it just by the looks of it I will need a smaller banjo then? Or do i just need another stock sized feed?

Trapper · Mar 25, 2008

http://64.202.180.37/files/metric.pdf place for metric fittings

Bobcat698 · Mar 25, 2008

If I'm not mistaken we used the same AN power steering fittings on both inlets.

Signal 73 · Mar 25, 2008

14X1.5mm for side ports

18X1.5mm for front port

ERemington · Mar 25, 2008

Signal 73 said:
14X1.5mm for side ports

18X1.5mm for front port

THANK YOU!

ERemington · Mar 25, 2008

Signal 73 said:
14X1.5mm for side ports

18X1.5mm for front port

So the front port actually takes a bigger banjo and fitting? Hmm, i thought it would have been smaller from the looks.

Bobcat698 · Mar 25, 2008

Smokem said:
Feed the stock feed port, feed the stock return, move the return to the front M18 x 1.50 port. Who's idea was it to feed the front port in the first place?

GunRacer1.. Mike Shannon I believe.

97crewcab · Mar 25, 2008

I also dual feed through the front and my return is in the stock location.

inline6359 · Mar 25, 2008

Smokem said:
Who's idea was it to feed the front port in the first place?

Trick question.......................................................

When and if i ever get my fuel system finished i will feed the front stock feed, the over flow, and front port. I may bump the over flow feed to the stock return feed looking at the scavenging system. But im not close to redoing my fuel system yet.

ERemington · Mar 25, 2008

So how do the AN fittings seal? O-ring? Vs. the banjo fitting with the 2 washers?

Signal 73 · Mar 25, 2008

I didnt use a banjo in the front or side, just for the return. For the front I have a 90° -8 fitting going into a -8 to 18X1.5, And for the side a straight -8 fitting going into a -8 to 14X1.5mm. Thats good for more fuel to the pump that i will ever be able to use I figure.

ERemington · Mar 25, 2008

Right on, thank you everyone for the info, this helps a bunch! :rockwoot:

RonA · Mar 25, 2008

Is the 10mm allen plug on the front always so bloody tight? I'm not sure I'm going top be able to get it out without drilling it out(what a mess).

Mo Smoke · Mar 25, 2008

I used -6 AN 14mmx1.5 for my stuff as it was what I had from my Powerstroke system.

Signal 73 · Mar 25, 2008

RonA said:
Is the 10mm allen plug on the front always so bloody tight? I'm not sure I'm going top be able to get it out without drilling it out(what a mess).

It took a 2' breaker bar on mine. IIRC, there was some kind of threadlock or sealer on the threads.

Jim Fulmer · Mar 25, 2008

Yea it is that tight!

I use the front for feed along with the stock port and return out of the stock location.......seems to work for me. I did have a guy nicely argue with me at Denton the other day that I had air trapped in my pump doing it like this, I just figured it was no big deal with over 50psi of fuel pressure.......I might be costing myself power :bang

Lets go over everything that is inefficent on our trucks: Fuel system, air system(intercooler) and intake, cyl heads, heavy ass bottom ends, weights too much, too much drag and mass to move, power robbing inj pumps.......ok I'm done.

Jim

Feed ports on P7100

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