30 psi for over 4K miles on E85, so far no problem... i bought headstuds but they are sitting in my room.

 

For short time I think they will just fine but latter they may become a problem, really a little bit of work a 175.00 for studs and new Head Gasket and your good to go for along time. Listen to this, better to do something little now and not have to replace a motor or something later, getting the head resurfaced is like 125.00 getting it cleaned is like another 50.00 then getting new bolts and HG, is around 175.00 so now you spend around 400.00, its not very hard to figure out what is best but you decide

 

That guy Emery@STM... that went 10.0 or 10.1 on a stock block. Did he have head studs? Probably did but just checking.

 

Stronger headstuds are needed for very high cyl pressures and temperatures achieved with extended knocking, but so are forged parts. A tank of bad gas in a stock evo can create much higher cyl pressures than a 500whp evo. If your not planning on pushing detonation limit, why screw up something thats working?

 

+1 My studs were done 1 by 1, I burnt three pistons, and broke wrist pin, the head gasket still held pressure rock solid 30psi.

 

like the op said, if hes gona run nomore than 26psi on the red than hell be ok on stock bolts.....but anymore boost and ull need studs

 

we done 1X1 back in 2004. None of those car have issues. Now this day i do 2x2 method. Also the main thing is how you put int he studs. The instruction say hand tight, but for me i tight them down the the right level so that when i torque the bolt and washer down, so it shows about 3-4 threads.

 

35r, 32 psi, 500+ whp, 78,000 miles (18,000 with 500+whp), track days, countless launches, spirited driving, and stock studs that work just fine. and i can list off a bunch of cars like mine with stock studs.

so no, you don't "need" arp studs.

 

We ran ARP's in our car using the 1by 1 method and had no problems. Our stock motor saw 40psi and the only issue we were having was valve float...


-Em

 

Thanks for this info!