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

Running High Boost

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  #1  
Old 06-24-2008, 06:11 PM
dukeboy_318's Avatar
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Default Running High Boost

okay, ive decided im going with twin turbos. my question is what needs to be done to the head to allow me to run these without blowing up? i know im going to go with 14 mm studs, but will that sufice? also what is fire-ringing and reaming the head?
 
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Old 06-24-2008, 06:24 PM
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12mm studs will be less hassle and make sure you at least oring it if not fire rings.
 
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Old 06-24-2008, 07:02 PM
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id rather be safe then sorry, dont wanna blow the thing apart. so ill stick with 14mm for now
 
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Old 06-24-2008, 07:24 PM
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You do realize that you need to do some expensive machining for 14 mm studs?

IMO, 12 mm studs are good enough if you are under 700 hp.
 

Last edited by Dr. Evil; 06-24-2008 at 07:26 PM.
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Old 06-24-2008, 07:44 PM
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12 mm will hold it together, fire ringing is a thin copper washer that surrounds the top of the cylinder that helps with blow by. 14mm you have to machine the head and block so if you want you can but that requires pulling the engine and basically rebuild it. Id go with 12 mm and just oring it
 
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Old 06-24-2008, 09:48 PM
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never put 14mm studs in a 24v block is to thin and they crack soooo much ezer go with the high strenth ones that are 12mm. i think schieds or haislys calls them A1's arb has them also. you will need new valve springs because its most likely you will make over 60 psi and your springs are rated at 60 psi guess waht happend the valves will be forced open. fire ringing is when they cut a grove in the block and head and insert a wire to form an extra gasket o ringing is usualy when they machine just the head and instert the wire. reaming the head is when they remachine the head for flatness because the flater the better. good luck
 
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