Banjo bolt mod question - Ford Powerstroke Diesel Forum
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Old 10-22-2012, 03:27 PM
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Banjo bolt mod question

since for some reason google wont work on my laptop making it so I cant load any forum the uses google its making resurching anything near impossable.

So my question is what are the benefits of doing the banjo bolt mod?


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Old 10-22-2012, 03:45 PM
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It's nonsense really (if we're talking about the same thing...)

This is something that "Bill-the-BooB" recommends - right? You drill out the bolt in the fuel supply that has a banjo to eliminate some supposed restriction. But there IS no restriction there, it's just so you "feel" good doing it I guess

It's just one of many things that he says that shows how little understanding he actually has about mechanical stuff...
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Old 10-22-2012, 04:20 PM
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Driven Diesel High Flow Banjo Bolt Kit
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Old 10-22-2012, 04:35 PM
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The restriction would be in the size holes in the bolt. If you increase the size, you would increase flow. Period. Now, the question remains, is it enough of a flow restriction to make it worth the time/ money to do it.....

Only way to really tell is get on the dyno and do a pull with stock banjos. Then swap out the banjos, and do another pull.

Now, it could do wonders for drivability and acceleration up top or down low, but reveal no increase in overall power. Could it improve the mapping on the TQ or HP curve? Maybe. Only way to tell is dyno and see. I don't have a clue either way, but I have wondered about this mod for some time.

I just wish it wasn't 100.00 to find out....that's a small price overall for a mod, but its a large price to net nothing on the receiving end......
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Old 10-22-2012, 04:54 PM
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from what i have read from others that have done it, is the truck only smokes a lot more....
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Old 10-22-2012, 10:42 PM
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I cut 4/10th of a second off my 1/4 mile time by adding a regulated return fuel system with the high flow banjo bolts. I would have been curious to see if the banjos made a difference or not but I wasn't about to do the fuel system and go back and do banjos later since I had everything off already. I should have taken a picture of the true size difference in the holes and the shank of the bolt itself, I would most definitely say it makes a difference in fuel flow.
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Old 10-23-2012, 05:23 AM
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It's kinda hard to argue with the physics though....

The bolt's center is 1/4".

The "feed" holes are 1/8" and there are 4 of them.

The volume that those 4, 1/8" holes, can flow is the same as what can pass through the 1/4" hole.

Drilling the 1/8" holes bigger means the limiting factor is still that 1/4" bolt center hole. It's just like the HPOP Oil Change
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Old 10-23-2012, 07:52 AM
COME ON...ONE TIME!!


 

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Now that's what I'm talking about....I never thought of it that way! Thanks Ralph.
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Old 10-23-2012, 08:41 AM
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Ya gotta believe the Engineer, who decided the dimensions, knew all this... And gets a good chuckle at the thought of a $100 set of Banjo Bolts to improve flow
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