6.4 Banjos - Ford Powerstroke Diesel Forum
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Old 05-12-2011, 11:15 AM
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6.4 Banjos

I've read about them on the forums.. Where can I get them and the blue spring? And what excatly does the blue spring do?
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Old 05-12-2011, 11:22 AM
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no idea, i am assuming that the blue fuel spring goes into where you secondary fuel filter is and ups your fuel pressure, remove the 4 allen heads and the spring is right there, as far as banjo bolts go, no idear.
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Old 05-12-2011, 11:24 AM
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Welcome to the org.

Read this
Things to consider about owning a 6.0L

It will explain why the blue spring is needed. 6.4 Banjo bolts are not necessary but many do them. The bolts are the ones that connect the fuel lines to the heads. They have bigger holes and no check valve. Bigger holes mean more fuel flow. The biggest thing is the fuel pressure spring to get your fuel pressure up. LOW FUEL PRESSURE kills injectors.
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Old 05-12-2011, 11:36 AM
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GDS Fuel Spring

here's the fuel spring
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Old 05-12-2011, 11:58 AM
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Part Numbers:

FPR kit: 3C3Z9T517AG

BANJO BOLTS (2): W302472
Banjo bolt washers (4): W303659

The washers come in two types, either copper or composite. Copper s/b torqued to 28 fp. Composite should be torqued to 33 fp.

Last edited by JUGGS; 05-12-2011 at 12:01 PM. Reason: Corrected the FPR kit part number
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Old 05-12-2011, 12:03 PM
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Quote:
Originally Posted by DEESLVRGN View Post
GDS Fuel Spring

here's the fuel spring
NO NO NO NO NO. Don't use those springs. They are not the same. They might just overpressurize your fuel system and then your buying injectors. FORD has the correct part, and they will stand behind it. Will the aftermarket?


Blue spring, from FORD.

Banjo Bolts and the necessary washers, available as a kit from Tousley Ford for under 10 bucks.
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Old 05-12-2011, 01:39 PM
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So I just need one of each and I'm good?
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Old 05-12-2011, 01:56 PM
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If you use those links, yeah. Order one of each. You will get the updated "blue" fuel pressure spring kit with everything you need to do that, and the other is the 2 banjo bolts with the 4 washers you need. You'll be good to go.
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Old 05-12-2011, 02:23 PM
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All these parts are for is to bring your fuel pressure up. Start with the springs and check your pressure. Might not need the banjos. Its not good to over pressurize
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Old 05-12-2011, 02:51 PM
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The banjo bolts will not raise your pressure. They just allow a free flow of fuel to the heads.
The blue fuel pressure spring kit from Ford is designed to replace the stock unit, which is well known to allow low pressure.
Your injectors can be damaged if the pressure falls below 45psi or gets above 100psi.
The updated spring kit from Ford will raise the pressure to a very comfortable 70psi.
If you look at those other aftermarket springs, they seem to claim that high fuel pressure is always better, which is false.
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