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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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Stock valve springs

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Old 09-28-2009, 09:59 AM
turbo20psi's Avatar
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Default Stock valve springs
At what RPM does stock valve springs start to float on a 24 valve head.
 
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Old 09-28-2009, 03:06 PM
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I was told that the stock valvetrain on the 24 valve is good up to 4200rpms.
 
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Old 09-28-2009, 03:57 PM
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No way....4K and 45PSI is pushing the limits. I think may TJ had a video of him floating his stockers. It's got alot more to do with boost than you may think, Not just RPMS to consider here!
 
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