umair

Seems like no one has a definitive answer because the numbers are all over the place. I will be doing my valvesprings soon and was thinking about doing the headstuds too but i heard they are very strong from the factory. My goal is to get mid 600s with my kings stage 1 kit.
Thanks

rsmatti

Studs are fairly inexpensive, If your going to remove the head you mind as well.

s2000442

Isn't the stage one a log manifold? Why would you not go for a stage 2 considering the amount of power you want. You're going to have to increase boost a lot more with that restrictive manifold to get that power level from a log, so yes heads studs is not a bad idea.

umair

Because i happened to get a very very good deal on a stage 1 kit. I couldn't pass the deal up.

c_me_go

Like it was said before studs are cheap and it's always the cheap parts that fail and cause trouble, at 600 u will need to change out almost everything to make it reliable, if not u will learn the hard way

s2000 or 240sx

If you are removing the head ARP studs are cheap and you might as well install them before putting the head back on. I have ARP head studs in my car and they are great but they dont seem to like boost above 30psi on my turbo.

umair

Arp it is then.

sohc_mshue

650+ here with stock headbolts. Same with my dad's old ap2. Never an issue.

umair

See thats what i mean. It seems like no one has a clear answer but it seems like they hold up fine even passed 700.

c_me_go

that is only a cpl of people on here that it might work.. no one is writing about the the time when the Head studs didnt hold up.. and i am sure there are alot of those kinds of people out there