6.7L Performance Discussion of 6.7 Liter Dodge Cummins Diesels Related To Performance And Longevity

6.7 forged rods?

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Old 02-21-2010, 10:23 PM
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Bomb 6.7 forged rods?

Does anyone out there offer a forged connecting rod for the 6.7? I have big plans/dreams of getting into the 850-900 hp range and have heard that the stock 6.7 rods are powdered and only good for about 700-800 hp

Thanks in advance
 
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Old 02-22-2010, 12:08 AM
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I think they are the same as the 5.9 rods
 
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Old 02-23-2010, 09:25 PM
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dodgeram082500, It turns out you are right I did a lot of research and i guess you can either do a 12v rod and have them shot-peened or use an aftermarket forged 5.9 rod either one should hol 1000+hp
 
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Old 02-23-2010, 09:39 PM
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Also heard you can put A 24V 5.9L head on top of the 6.7 Think the only guys doin that are sled pullers though.. Will have A look for the discussion I had seen on it.. Can't even rightly remember what advantage they were crediting to it. Found it.. Is titled Can You?. The aim wasn't for the 24V.. It was for the 12V head. Cause of the ability for larger valves.

Rhino.
 

Last edited by BLACK RHINO; 02-23-2010 at 09:59 PM. Reason: Found what I was lookin for.
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Old 02-24-2010, 12:02 PM
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I'm working on a set of injectors for a 6.7L with a 12v head.
 
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Old 02-24-2010, 09:14 PM
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Originally Posted by Smokem
I'm working on a set of injectors for a 6.7L with a 12v head.
Wouldnt you just use 12v injectors?
 
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Old 02-24-2010, 09:46 PM
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Depends on the fueling rate of the injectors. Bigger displacement, More room for fuel air.. More, More, More... With the larger valve ability into the 6.7. With .8 more displacement. I doubt stock 5.9 injectors are gonna be adequate for the desired fuel rate. Maybe they have A wide enough corridor but unlikely. Haven't done any digging into it as far as how much fuel at what pressure on the 12V. But my 09 6.7 hits over 27000PSI on the fuel when I am rolling into it. And am thinking it fires A fair amount more fuel at it then the 5.9 ever did. I don't know this for sure but it is my suspicion.

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Old 02-25-2010, 10:27 AM
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A stock 215hp 12v nozzle flows 0.8LPM more than a stock 6.7L CR nozzle, duration is where the difference is made.
 
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Old 02-25-2010, 08:29 PM
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Smokem. Good to know. Thanks for the clarification. So if the 12V flows more just shorter time. Your working on the same or higher flow rate but for a longer duration?

Rhino.
 
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Old 02-25-2010, 10:40 PM
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I just acquired 2 sets of 5.9 rods, I was told by a very reliable source, use from 98-2002 cummins only, he said that there are some powder crap on the 03's not all but a certain few. They are not hard to find that's for sure.. and helluva lot cheaper than buying new ones..

Juan
 


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