12 Valve 2nd Gen Dodge Cummins 94-98 Discussion of 12 Valve 5.9 Liter Dodge Cummins Diesels with P7100 Injection Pumps

Opinions on 12v dyno results

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Old Dec 27, 2015 | 07:47 PM
  #21  
94 12valve's Avatar
Diesel Bomber
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From: Pylesville, Maryland
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Originally Posted by wpg6.5
Ya it just doesn't happen. You just had bad luck. Or poor workmanship. That's all, I always suggest studding, valve springs, head work, and perhaps o ringing although not totally necessary to any 12 valve owner. Everyone wants more power, more rpm, etc and doing those things all at once will open up a whole world of performance. Anything else to me is just being cheap which never works out in the diesel game. Studs are always worth it, I went with 625's so I knew I could reuse them and the investment wouldn't be lost. Used them on my old engine and reusing them on my fully built new engine.
For any kind of performance build IMO they are necessary on 12 and 24v's
 
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Old Dec 27, 2015 | 11:04 PM
  #22  
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Diesel Wrench
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Performance of course. I don't know if Id suggest it for a stout hauler or just slight up grades but it's definetly worth the investment
 
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Old Dec 28, 2015 | 06:04 PM
  #23  
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IMO, studs are cheap insurance. If you're going to start turning up the boost, they should be done. Not because 35, 40 or even 45psi of boost necessitates them though- it doesn't.
Only because power is so addictive and, more importantly, easy to make with these trucks that it's better to just get it done up front so you don't get caught with your pants down later.
 
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