5.9L 24V Performance Discussion of 24 Valve 5.9 Liter Dodge Cummins Diesels with VP44 Injection Pumps Related To Performance And Longevity

Head studs

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Old Nov 13, 2011 | 06:02 PM
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noseamum's Avatar
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Default Head studs

Just wondered if I can go past 50psi if I just put studs in, If so how high. Or do i have to firering as well?
 
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Old Nov 13, 2011 | 06:24 PM
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As long as its done correctly studs will hold 50psi.
 
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Old Nov 15, 2011 | 11:46 AM
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studs are fine but if you decide to pull head o-ring don't fire ring it.
 
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Old Nov 15, 2011 | 06:12 PM
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Fire rings don't last as long as a daily drive, so the story goes. O-ringed heads hold up better to daily drivers.
 
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Old Nov 16, 2011 | 04:56 AM
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My goal is about 60psi boost.Hoped it would be sufficient with studs for that.
Can`t seem to find any shops that sell o-ring sets, just ones that sell fire ring sets.
Live in Norway so I need to get the machining done here.
 
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Old Nov 17, 2011 | 09:09 PM
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o ring not a kit it's done in house.
 
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Old Nov 17, 2011 | 09:17 PM
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I run 60+ psi on both of my trucks with just head studs torqued to 150. I have been problem free for years.
 
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Old Nov 17, 2011 | 09:23 PM
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i had always heard firerings were a step up from o-rings research time!!
 
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Old Nov 19, 2011 | 07:02 PM
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Originally Posted by tyler_s18
i had always heard firerings were a step up from o-rings research time!!
thats what they say but I have seen a few trucks that have blown the fire rings. went to o-rings next with 2 seasons down and no issues.
 
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Old Nov 19, 2011 | 11:04 PM
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Word is fire ringing is to cut a groove in head and block in some cases and installing wire to replace the compression ring on the head gasket (which requires said fire ring gasket because compression rings are removed from it) and oringing is cutting a groove in the head and sometimes block and using a traditional head gasket. The idea of oringing is to get the compression ring of the gasket to fit in the grooves and provide a better seal whereas fire ring You replace it with separate parts to for a compression ring.

Due to slang/lingo you'll hear them interchanged for one or the other when said but that is typically what I've seen to be the standard for each term when used correctly. Kinda like twins and compounds. Twins is often used when compounds would be the proper term if your that nit picky.
 
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