My overboost problem
FTE Leadership Emeritus
Joined: Jan 2003
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From: 3rd Rock
Originally Posted by mattsf250
which side??
before the intercooler, or after?
it makes a diff..... tap it just before the manifold to see what the engine actually gets. these trucks do not have very efficient intercoolers.
before the intercooler, or after?
it makes a diff..... tap it just before the manifold to see what the engine actually gets. these trucks do not have very efficient intercoolers.
these trucks do not have very efficient intercoolers. How do we know this?
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Something I left out was evertime I have had a problem I have been pulling about 9 to 10,000 lbs. That is with overboost,blown intercoolers, and turbo hoses.
Just a thought if you needed a cat for back pressure,why is it only I think its 1999 and 2003 have cats?? Besides for the emissions.
Just a thought if you needed a cat for back pressure,why is it only I think its 1999 and 2003 have cats?? Besides for the emissions.
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From: 3rd Rock
Originally Posted by johndeer
Something I left out was evertime I have had a problem I have been pulling about 9 to 10,000 lbs. That is with overboost,blown intercoolers, and turbo hoses.
Just a thought if you needed a cat for back pressure,why is it only I think its 1999 and 2003 have cats?? Besides for the emissions.
Just a thought if you needed a cat for back pressure,why is it only I think its 1999 and 2003 have cats?? Besides for the emissions.
You should still not have a problem.......
Laughing Gas
Joined: May 2003
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Originally Posted by johndeer
Something I left out was evertime I have had a problem I have been pulling about 9 to 10,000 lbs. That is with overboost,blown intercoolers, and turbo hoses.
Just a thought if you needed a cat for back pressure,why is it only I think its 1999 and 2003 have cats?? Besides for the emissions.
Just a thought if you needed a cat for back pressure,why is it only I think its 1999 and 2003 have cats?? Besides for the emissions.
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From: 3rd Rock
Originally Posted by King Ranch
Two totally different motors you are talking about here.Not only does the cat give you preassure but so does the down pipe.Makes you wonder why Ford doesn't put 4" exhaust on from factory-maybe the turbo doesn't respond well?
Elder User
Joined: Nov 2003
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From: Bass Lake, CA
Originally Posted by Tim Lamkin
these trucks do not have very efficient intercoolers. How do we know this?
not to mention the 7.3 i/c is notibly poor, somehting on the order of 5-6 psi loss outgoing vs/ inlet boost pressure.
ford shoots for production/cost/packaging when they design. or order these from a manufacturer....flow losses are not a top priority.
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FTE Leadership Emeritus
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From: 3rd Rock
Originally Posted by mattsf250
well, i do not have any graphs of the pressure drop over the core, however the fact that banks sells an upgrade intercooler, and not a turbo tells me the turbo is able to outflow the stock unit.
not to mention the 7.3 i/c is notibly poor, somehting on the order of 5-6 psi loss outgoing vs/ inlet boost pressure.
ford shoots for production/cost/packaging when they design. or order these from a manufacturer....flow losses are not a top priority.
not to mention the 7.3 i/c is notibly poor, somehting on the order of 5-6 psi loss outgoing vs/ inlet boost pressure.
ford shoots for production/cost/packaging when they design. or order these from a manufacturer....flow losses are not a top priority.
Agreed with your observation, however to say they are not efficient is..well just because Banks sells one does not mean they are inefficient. Ford is mass-produced and banks is for all intent purpose a one off copy, so absolutely you can build a better one. My point I think Fords is good…with as much HP as they are pulling then it is not bad…. simply massed produced. I would like to get the real engineering numbers along with the performance criteria they were shooting for.
Good stuff
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I am new but I must share
I just wanted to add my new experience with everyone. Just talked to the service department about my, 2003 4x4 CC F-350 Sonic Blue baby. And they said are putting in a new turbo. They did not say why yet but I took it in for them to investigate the engine light and loss of power. But what I want everyone to hear is this, my ONLY mod is a muffler deleat pip. And I am running a 1/03 build with no flashes Well till today 
So I really don't think the after market exhaust is the problem or the flashes.
Like I said just my story love this site, it has been a great help Thanks Everyone
So I really don't think the after market exhaust is the problem or the flashes.
Like I said just my story love this site, it has been a great help Thanks Everyone
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From: 3rd Rock
Originally Posted by johndeer
King ranch,
The reason ford doesn't put 4 inch, is because of cost. A turbo from the people I've talked to say the less back pressure the better. Back pressure does nothing for a turbo.
The reason ford doesn't put 4 inch, is because of cost. A turbo from the people I've talked to say the less back pressure the better. Back pressure does nothing for a turbo.
Turboed boy that word spells and reads weird!!
Laughing Gas
Joined: May 2003
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Originally Posted by johndeer
King ranch,
The reason ford doesn't put 4 inch, is because of cost. A turbo from the people I've talked to say the less back pressure the better. Back pressure does nothing for a turbo.
The reason ford doesn't put 4 inch, is because of cost. A turbo from the people I've talked to say the less back pressure the better. Back pressure does nothing for a turbo.
FTE Leadership Emeritus
Joined: Jan 2003
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From: 3rd Rock
Ford, International, and a few of their closet friends probably spent millions designing this motor. They still have a little work to do, that notwithstanding if it would have needed 4 DP then they mighty have put one on. It is designed to run with a cat, for many reason. Not just sound and HP. A motor as designed to run in harmony with all its parts, each and every one.
They do not build these things and then start adding parts.
We as a group or individually cannot re-design this motor and out think Ford. This issue has been belated beyond any other. Those who choose to spend their money doing this mod do it with the full knowledge that it can affect you warranty.
One item that is of particular interest if you own a 6.0L
They do not build these things and then start adding parts.
We as a group or individually cannot re-design this motor and out think Ford. This issue has been belated beyond any other. Those who choose to spend their money doing this mod do it with the full knowledge that it can affect you warranty.
One item that is of particular interest if you own a 6.0L
Postmaster
Joined: Aug 2003
Posts: 4,483
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From: Central Texas
Originally Posted by Tim Lamkin
Ford, International, and a few of their closet friends probably spent millions designing this motor. They still have a little work to do, that notwithstanding if it would have needed 4 DP then they mighty have put one on. It is designed to run with a cat, for many reason. Not just sound and HP. A motor as designed to run in harmony with all its parts, each and every one.
They do not build these things and then start adding parts.
We as a group or individually cannot re-design this motor and out think Ford. This issue has been belated beyond any other. Those who choose to spend their money doing this mod do it with the full knowledge that it can affect you warranty.
One item that is of particular interest if you own a 6.0L
They do not build these things and then start adding parts.
We as a group or individually cannot re-design this motor and out think Ford. This issue has been belated beyond any other. Those who choose to spend their money doing this mod do it with the full knowledge that it can affect you warranty.
One item that is of particular interest if you own a 6.0L
Closet friends??? Is that why there are nice interiors?
