how much boost can stock commonrail heads handle??

[9t5twelvevalve]

ive heard different things,i have an 04.5 and i was thinking about getting a bigger turbo, a couple people have told me that a stock commonrail can handle up to 50-60 pounds without aftermarket studs, is there any validity to this statement? any input would be appreciated

 

[cumminspullerzj]

I run 49 psi on my stock head right now. The guy that owned it before me pulled work stock and pushed 62 all day. but i would suggest head studs and decent head gasket. Just to be safe. Dont want to screw up a head. them you'll be up a creek without a canoe.

 

[redram04]

I uses to run my special up to 58psi all day long on stock bolts with no issue. Not so much boost but cylinder pressure which is affected by timing . I've always ran a little less timing though.

 

[9t5twelvevalve]

i probably will get studs sooner or later, just wont make it an immediate priority, thanks for the help!

 

[Gibson]

Can never go wrong with head studs

 

[9t5twelvevalve]

Can never go wrong with head studs

thats what i was thinking

 

[cumminspullerzj]

X2 On the timing and cylinder pressure. U can blow a head gasket on 40 psi with a lot of timing and still keep it in tact at 60 psi with no timing. All about cylinder pressure

 

[9t5twelvevalve]

X2 On the timing and cylinder pressure. U can blow a head gasket on 40 psi with a lot of timing and still keep it in tact at 60 psi with no timing. All about cylinder pressure

think id be okay if i kept the timing stock?

 

[cumminspullerzj]

What kind of turbo are we talking and what kind of boost do you want to run. Also for what application sled pull race or dd.

 

[mikmaze]

what would you rather do? wait to do studs after you blow it and you have a towing fiasco to deal with? Same with trans, build up in prep for power/ pressure. Unless of course you got tons of money laying around for surprise repairs/ downtime.

 

[Snedge]

I have stock head bolts, a 66mm S300, and 219,000 miles on my '03. The head has never been of the engine. I check the bolts every time I check valve lash.

With that being said, I tell anyone that wants to up the output of their engine, that they're entering a world of unknowns. There is no safe level of high performance. Just lower levels of dangerous.

 

[hellscummins]

Keep in mind that valve seats can be an issue with these trucks too. If your wanting to make big power down the rd now might be a good time to get some bigger ones pressed in. Just a thought.

 

[Runninlean]

I tell anyone that wants to up the output of their engine, that they're entering a world of unknowns. There is no safe level of high performance. Just lower levels of dangerous.

Sig worthy!