24 Valve 2nd Gen Dodge Cummins 98.5-02 Discussion of 24 Valve 5.9 Liter Dodge Cummins Diesels with VP44 Injection Pumps
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FLOW CHARTS?

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  #11  
Old 03-24-2009, 11:30 AM
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Originally Posted by Red_Rattler
The stock numbers on the head flows are 12v intake 143cfm exhaust 151cfm vs. 24v intake 156cfm exhaust 169 cfm's. So in theroy it takes a stage 2 port job on a 12v head to get close to a stock 24v head

At what vacuum pressure? as long as they were all done at the same pressure the numbers above are nice to compare to each other however they don't give you jack for real world # because we don't know at what pressure they were tested at.
 
  #12  
Old 03-24-2009, 11:34 AM
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pressure is simply the resistance to flow so the less resistance you have the better the flow is (less pressure)

these numbers that Red put up are just examples that the 24 valve head flows with less resistance than the 12 valver did
 
  #13  
Old 03-24-2009, 05:09 PM
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yes that is true but You have no idea if the head was flowed at 13" of HG or 29" of hg which makes the numbers somewhat useless for any math calculations.

If you ever wanted to choose a turbo for your truck and actually THINK(I know thats hard) about how well the turbo matches your truck as opposed to "well lets try it and see what happens." then the above # don't help much.
 
  #14  
Old 03-24-2009, 09:48 PM
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That was not the question,the question was what flows better,24V>12V,that's easy.
 
  #15  
Old 03-25-2009, 08:48 AM
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also true. But since I'm the only one that seems to care I'll shut up.
 
  #16  
Old 03-29-2009, 04:06 PM
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what about the CR heads, ive read the 05-07's flow the best out of all the heads?
 
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