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How much boost until you need head studs?

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Old 02-04-2013, 07:13 AM
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How much boost until you need head studs?

I have a 66mm turbo and I see about 40-45lbs of boost. I was wondering if I need head studs, main studs, and rod studs? or anything else I may need with this much boost?
 
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Old 02-04-2013, 07:38 AM
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You're really pushing your luck IMO! I wouldn't be running those kinds of pressures without studs, springs and pushrods. Not in a truck that I relied upon anyway.
 
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Old 02-04-2013, 07:42 AM
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And by 66mm turbo are you running the D66? I'm not sure that turbo is up to the task either
 
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Old 02-04-2013, 07:45 AM
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^^ Agreed. Stage 2's and a stock turbo mean that turbo won't be alive long. 30 PSI is about the most you should push the stock turbo if you expect it to last.


Who would do that (**cough --TODD--**)!? Oh, wait..... Never mind......lol
 
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Old 02-04-2013, 08:02 AM
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Stock turbo went out about a week after I put the stage two's in lol, I raced my buddys 07 cummins and it went out doin about 100mph goin down the highway. I beat him though lol. I now have the turbo thruster 2. What springs do you recomend?
 
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Old 02-04-2013, 08:05 AM
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Old 02-04-2013, 08:08 AM
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Originally Posted by bubba_3711
(are you taking notes here Todd? lol)

Yup, I'd say that one is done! I think most guys recommend Comp 910 springs, ARP head studs and the push rods are a toss up.
 
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Old 02-04-2013, 08:11 AM
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What about main studs and rod studs? and whats the toss up?
 
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Old 02-04-2013, 08:39 AM
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I don't think most guys do main studs and rod studs until you're over 500 HP, which you won't be with Stage 2's.

I say the push rods are a toss-up because there are several different brands that different folks use. Smith Brothers is probably what I would do if it were me, but that's just because that is what Riffraff sells.
 
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Old 02-04-2013, 08:54 AM
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I got Irate Diesel's package deal of Comp Springs, ARP studs and Smith Bros push rods. That is one blown turbo!
 
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Old 02-04-2013, 09:23 AM
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500 to the fly wheel, or rear wheels? Thank you guys for your help. And ya it was toast lol I still got my core refund though.
 
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Old 02-04-2013, 09:32 AM
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500 RWHP. And there are guys running A LOT more than that (a couple approaching the 1k mark) on a stock bottom end. The bottom end on these engines are STOUT! It's just that the stock springs were never meant to keep the valves from floating at those pressures and the cylinder pressures are a lot higher than the stock bolts and gaskets were designed for. Adding studs, springs and rods just beefs up the top end to take the abuse a lot better.
 
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Old 02-04-2013, 09:38 AM
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Do I need better head gaskets then stock? And just a curious queston what will happen if I just put head studs in? what would it do to the stock springs?
 
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Old 02-04-2013, 09:47 AM
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Originally Posted by DIYMechanic
^^ Agreed. Stage 2's and a stock turbo mean that turbo won't be alive long. 30 PSI is about the most you should push the stock turbo if you expect it to last.


Who would do that (**cough --TODD--**)!? Oh, wait..... Never mind......lol
Muah? I drive like a little old lady! Lol
 
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Old 02-04-2013, 10:47 AM
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I read an article that this guy after 100K took his springs off and they tested at 70lbs and stock is 100lbs. The comp springs are 130lbs if the height is set right with shims. The stock head gaskets are fine as long as you put them in one at a time.

https://www.ford-trucks.com/forums/1...-bearings.html
 


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