5.9L Rotary Performance Discussion of 12 Valve 5.9 Liter Dodge Cummins Diesels with Rotary Injection Pumps Related To Performance And Longevity

9mm to 7mm conversion

Old Dec 19, 2009 | 06:29 PM
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Default 9mm to 7mm conversion

I recently received a set of stock non I/C injectors from a member, the goal is to convert them to be used with an I/C head that was exchanged. I will post some more pictures and information later, so far this is the visible change, stock on left machined on right.

 

Last edited by Smokem; Dec 19, 2009 at 06:54 PM.
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Old Dec 19, 2009 | 07:47 PM
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just turned down part of the nozzle? wouldn't it be a wash in machine time vs. buying new nozzles?
 
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Old Dec 19, 2009 | 08:37 PM
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SWEET MAN i need them ASAP that pop pop noise is driving me nuts and the power sucks take lots of pics and notes iam curious on this
 
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Old Dec 20, 2009 | 12:21 PM
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Originally Posted by Budgreen
just turned down part of the nozzle? wouldn't it be a wash in machine time vs. buying new nozzles?
Time is not my concern, even if I paid to have the nozzles turned down, it would be much cheaper, but since I am doing the machine work, that is not an issue.
 
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Old Dec 20, 2009 | 12:44 PM
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so you can remove that much material and there will be no "structural" issues? just wandring...
 
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Old Dec 20, 2009 | 01:15 PM
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Originally Posted by Benjamin
so you can remove that much material and there will be no "structural" issues? just wandring...
Yes, the common 6-hole Sac nozzle used in the 24v application is a Mack nozzle turned down in the same fashion.

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Old Dec 20, 2009 | 02:34 PM
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that is cool that they are that thick. i guess you are only removing 1mm of material off them so it isn't like a bunch.
 
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Old Dec 20, 2009 | 08:29 PM
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A few pictures of the process.





And the finished product.



The set fired really well for being 20yrs old, I added 0.010" lift and set the opening pressure to 245BAR, they originally ranged between 200-225BAR.
 

Last edited by Smokem; Dec 21, 2009 at 06:22 PM.
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Old Dec 21, 2009 | 01:19 AM
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oh god i just peed a little when i saw that

iam so excided

weston the 245 bar thing i trust you 100% but i have been told that will ware the pump out realy fast because it has to strugle to get them open?:

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what did you paint them with
 

Last edited by big bad diesel 416; Dec 21, 2009 at 01:19 AM. Reason: Automerged Doublepost
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Old Dec 21, 2009 | 11:24 AM
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Stock opening pressure is 245BAR, I removed the paint.
 
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