Fuel Line, RR, crossover line questions... - Ford Powerstroke Diesel Forum
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post #1 of 19 Old 01-07-2011, 05:58 PM Thread Starter
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Fuel Line, RR, crossover line questions...

I have been reading alot on the fuel systems lately and sorry for the possible dumb questions but I get confused when I read different posts and threads

I have read that RR and Airdog/Fass are and arent good together?

The rear crossover line is worth it and not worth. Some some it equalizes the pressure but others say it doesnt help because what is the difference if it crosses over to the other head vs hitting the back of the head?

The 6.4 banjo bolts are and arent worth doing...

Anyways it all gets confusing

So I have been thinking about it and was wondering does the fuel just enter the heads and the injectors suck up the fuel or is there a rail in there? If the fuel just gets dumped into the head then would it be possible to put a Y on each output of the fuel bowl and have fuel enter the front and the rear of the head? Sorry if this is a dumb question I am just trying to learn this fuel crap

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post #2 of 19 Old 01-07-2011, 06:11 PM
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If you fallow the fuel line from the filter housing it enters the front of the head. with the cross over it allows for the injectors in the back to get the same pressure as the front but it would only make a difference if you had vary large injectors

Page 28: Fuel Supply System

You can see here the fuel dead end's at the back of the head that with large injectors it could be possible that the first three injectors would use up most of the fuel before it reached the back one

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post #3 of 19 Old 01-07-2011, 06:26 PM Thread Starter
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ok so fuel just dumps into the head correct? Then is it possible to put Banjo's in the back of the heads and feed fuel in that way too to keep all the injectors fed with the same amount of fuel?

Also I dont see how putting the crossover line on the back of the heads keeps the same pressure? If the fuel comes into the front of the head and the first couple of injectors get most of the fuel then how would ther be enough to go to the other head and feed the back injectors?

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post #4 of 19 Old 01-07-2011, 06:45 PM
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the cross over line is a banjo and hard line the plug in the head is real close to the up pipes and it get hot the hard line come's up over the valve cover then is connected by breaded hose. fuel go's in the front of both heads

http://www.trustedperformance.com/Fuel.html


you not only need pressure but volume so opening the banjo bolt is good but larger line's will give you that volume like in the stage 1 kit's

04 F250 PSD Every day work truck
3000 Watt inverter/Jotto desk laptop and printer
180cc injectors 70hp+/powermax turbo
Stage 1 fuel lines/58 volt FICM from swamps diesel
ARP studs/black onix head gaskets
ATS intercooler/CFM+/Airaid intake
Fluidamper/200 Amp alternator
SCT X3 innovative diesel
4" turbo back MRPB duals
Mag-Hytec diff./trans covers

Last edited by Paintingman; 01-07-2011 at 06:51 PM.
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post #5 of 19 Old 01-07-2011, 06:49 PM Thread Starter
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Quote:
Originally Posted by Paintingman View Post
the cross over line is a banjo and hard line the plug in the head is real close to the up pipes and it get hot the hard line come's up over the valve cover then is connected by breaded hose. fuel go's in the front of both heads

http://www.trustedperformance.com/Fu....com/Fuel.html


you not only need pressure but volume so opening the banjo bolt is good but larger line's will give you that volume like in the stage 1 kit's
The link is broke

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post #6 of 19 Old 01-07-2011, 06:51 PM
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That's better

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180cc injectors 70hp+/powermax turbo
Stage 1 fuel lines/58 volt FICM from swamps diesel
ARP studs/black onix head gaskets
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Fluidamper/200 Amp alternator
SCT X3 innovative diesel
4" turbo back MRPB duals
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post #7 of 19 Old 01-07-2011, 07:02 PM Thread Starter
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so unless you get aftermarket injectors I would assume that 6.4 banjos, new spring and a rear crossover would be sufficent enough and help those rear injectors?

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High Idle Mod
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RCD EGR Delete
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post #8 of 19 Old 01-08-2011, 05:04 AM
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Here's what I have done for the fuel system. I'll be talking from the tank to the heads.

I have a Truck Source Diesel fuel sump on the bottom of the tank. This feeds the AirDog 100 that runs to the OEM pump. I added the newer banjo bolts.

I'll be adding the updated fuel pressure spring (blue spring) soon along with a fuel pressure gauge. There's really no need to go to with a regulated return or cross over. You just need to maintain the pressure into the heads.


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post #9 of 19 Old 01-08-2011, 06:52 AM
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Quote:
Originally Posted by HeavyAssault View Post
Here's what I have done for the fuel system. I'll be talking from the tank to the heads.

I have a Truck Source Diesel fuel sump on the bottom of the tank. This feeds the AirDog 100 that runs to the OEM pump. I added the newer banjo bolts.

I'll be adding the updated fuel pressure spring (blue spring) soon along with a fuel pressure gauge. There's really no need to go to with a regulated return or cross over. You just need to maintain the pressure into the heads.
That all you need for are every a day drivers when you want to put some 200cc or bigger injectors and take it to the track then do the upgrade.

CCSBD i know what you were thinking why not pressurize both end of the head probably work well with those 200cc injectors

04 F250 PSD Every day work truck
3000 Watt inverter/Jotto desk laptop and printer
180cc injectors 70hp+/powermax turbo
Stage 1 fuel lines/58 volt FICM from swamps diesel
ARP studs/black onix head gaskets
ATS intercooler/CFM+/Airaid intake
Fluidamper/200 Amp alternator
SCT X3 innovative diesel
4" turbo back MRPB duals
Mag-Hytec diff./trans covers
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post #10 of 19 Old 01-08-2011, 09:06 AM
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It is also a real pain in the azz to reach the plugs and bolts for the rr or crossover line on the rear of the heads. I did mine just for any future upgrades.

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