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Old 08-16-2018, 04:08 PM   #1
olblue359
 
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03-04 injectors in 2014

Have swapped several motors from 5.9 to 6.7 on earlier year trucks wondering if you can still run the 03-04 5.9 injectors with the 2014 ECM. Reason being I have a set of exergy injectors that are freshly checked out would like to use vs buying new.
 
Old 08-16-2018, 04:43 PM   #2
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I'd do it. Not sure what head you're running, but I'm sure you are aware of the modifications needed to run 5.9 injectors in a 6.7 head.
 
Old 08-16-2018, 06:24 PM   #3
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Originally Posted by Snedge View Post
I'd do it. Not sure what head you're running, but I'm sure you are aware of the modifications needed to run 5.9 injectors in a 6.7 head.
Modifications are needed to do the opposite, 6.7 injector in 5.9 head. 5.9 injector will go into 6.7 head without any work.
 
Old 08-16-2018, 10:58 PM   #4
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I'd do it. Not sure what head you're running, but I'm sure you are aware of the modifications needed to run 5.9 injectors in a 6.7 head.
What mods to run 5.9, 03-04 injectors in a 6.7 head ???? Retaining collars ?
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Old 08-16-2018, 11:30 PM   #5
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What mods to run 5.9, 03-04 injectors in a 6.7 head ???? Retaining collars ?
None just test fit mine they drop in. Just can’t put a 6.7 injector in a 5.9 head
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Old 08-17-2018, 08:44 AM   #6
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It's the other way. Older head (or newer inj) must be machined.

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Old 08-17-2018, 02:48 PM   #7
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I was aware that you cannot run 6.7 injectors in 5.9 head. We have done several swaps just wanted to make the 2014 ECM would still run the 5.9 injectors
 
Old 08-18-2018, 07:11 AM   #8
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IIRC the voltage on the newer injector/ecm for the 6.7 is higher.

I haven't heard anyone doing this swap, but expect you would have to spend some time with the fuel maps to compensate for the resistance of the injector solenoid.

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