5.9L 12V Performance Discussion of 12 Valve 5.9 Liter Dodge Cummins Diesels with P7100 Injection Pumps Related to Performance and Longevity

Safe Boost #'s

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Old Aug 16, 2010 | 05:58 PM
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Default Safe Boost #'s

Ok i know every situtation is different and every truck is differnt. Now for the question, what is a safe number for a head gasket with bolts. My truck has 284,000 miles on it and im thinking of investing in a good turbo and junking the ole h1c.
 
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Old Aug 16, 2010 | 07:52 PM
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Depends on how much airflow you're going to have among other things. If you have seen that everything plays a role then you should have a good number to run with.
 
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Old Aug 16, 2010 | 08:54 PM
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Stock head gasket and head bolts I wouldn't play with much more than 40 psi, some people say you can run more but, even at 40 psi your playing with fire and its not a matter of if, but when your head gasket will take a crap on ya.
 
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Old Aug 17, 2010 | 02:15 PM
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I would say 35 ... anything more than that on a stock charger is pointless anyway
 
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Old Aug 17, 2010 | 09:20 PM
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I know 35 is max with a stock charger, but his question was with an aftermarket one what could he push with stock head bolts and gasket.
 
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Old Aug 17, 2010 | 09:33 PM
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missed that part ... I still think you should keep it arround 35. but like you already said every truck is different
 
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Old Aug 17, 2010 | 09:38 PM
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around here we put allen bolts in one at a time. i run close to 60 lb. with stock gasket
 
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Old Aug 17, 2010 | 11:09 PM
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i have always been told up tp 40psi with stock head gasket and bolts. i am sure people have got more out of it but that is just the safe number. X2 on stock charger being a waste over 35lbs.
 
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Old Aug 17, 2010 | 11:31 PM
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A 35 turns into a grenade at 50 couple pounds. It sounds weird when chunks fly out the exhaust.
 
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Old Aug 18, 2010 | 11:14 PM
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Yea i know the stock charger is pointless past 32-35 lbs. I was just kinda thinking of jumping up to a little larger charger so i can do just a little more tuning but... with everytwist it puts more strain on another part!
 
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