6.4 banjo bolts? - Ford Powerstroke Diesel Forum
6.0L Performance Parts Discussion What has or has not worked for you?

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Old 06-03-2012, 08:24 AM
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6.4 banjo bolts?

having searched countless threads on this 6.4 banjo bolt mod, has anyone documented what this mod actually does for the 6.0 engine? i am not asking if it makes the engine "feel smoother" or any type of "seat of the pants opinions" !
Has anyone documented an increase in fuel pressure? or any increase in fuel mileage, or increase in HP/torque?
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Old 06-03-2012, 03:59 PM
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Originally Posted by 07OUTLAW View Post
Banjo bolts - They replace the banjo bolts where the fuel lines go into the heads. The original ones have smaller holes and a checkvalve, restricting flow. Will you notice a huge gain? No! Will you notice anything? I doubt it! will you theoretically improve fuel flow to the injectors? Yes. For the price you pay for new bolts/crush washers it's worth it, IMO

Updated FPR - I'm extremly happy with this one. My fuel pressure went from 50psi at idle to 64psi and at WOT, with the old spring, I'd see pressure as low as the mid 30psi range, I can't get it under 50psi now
from another thread
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Old 06-03-2012, 04:15 PM
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I did the banjos the blue spring and an airdog and my motor became quiter and smoother and more responsive, I did all at once so I don't know if the banjos did anything
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Old 06-03-2012, 04:50 PM
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I've had a hand in putting 6.4 banjos in a few buddies trucks and there was no differance that we could tell. Only noticible change is when we put in a AD or FASS.
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Old 06-03-2012, 06:54 PM
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From what I have seen, there is no benefit at all to 6.4 banjos. The check valves were put in there for a reason by someone presumably quite a bit smarter than me. Unless you are running larger than stock injectors, just get the upgrade FPR spring and be done with it. Airdog or FASS never hurt either.
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Old 06-03-2012, 07:17 PM
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Quote:
Originally Posted by TooMuch03 View Post
From what I have seen, there is no benefit at all to 6.4 banjos. The check valves were put in there for a reason by someone presumably quite a bit smarter than me. Unless you are running larger than stock injectors, just get the upgrade FPR spring and be done with it. Airdog or FASS never hurt either.
That.

I installed mine and noticed no difference at all. You could even drill out the 6.0 check valves to make it like a 6.4. Some member did a write up on here I think.
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Old 06-03-2012, 07:34 PM
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i did the blue spring and banjos on the same day i did notice the injectors were alot more quiet but other than that nothing ....mostly piece of mind for me ....
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Old 06-04-2012, 03:08 PM
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Quote:
Originally Posted by TooMuch03 View Post
From what I have seen, there is no benefit at all to 6.4 banjos. The check valves were put in there for a reason by someone presumably quite a bit smarter than me. Unless you are running larger than stock injectors, just get the upgrade FPR spring and be done with it. Airdog or FASS never hurt either.
i was told the check valves are in there because on international applications they use mechanical fuel pumps. the check valves keep pressure in the fuel rails, so i have come to understand they are not needed with the electronic fuel pumps
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Old 06-08-2012, 05:56 PM
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Originally Posted by thepowester View Post
i was told the check valves are in there because on international applications they use mechanical fuel pumps. the check valves keep pressure in the fuel rails, so i have come to understand they are not needed with the electronic fuel pumps

So it is a good thing to do?
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Old 06-08-2012, 06:03 PM
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Unless someone tested flow rates and pressure pre and post banjo bolt, we'll never know.
I think someone did actually test flow though, but idr who or where I read it on here.
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