i have a b18b with 122k miles, i boosted it once b4, and the piston rings gave out. i was boosting 9psi. i want to replace the rings, and rebuild the engine so i can boost it again with new parts. would the 122k mile pistons and rods and crank hold up to 9psi.

im gonna say not on that motor. get some lower comp pistons and get some better info then try again

um . . . . yes they will, just change the rings if you are on a budget and clean the pistons up. It's not PSI you are looking for it's how much power can your stock internals withstand. there's a guy on HT running 20psi on a bone stock LS Motor with a perfect 12:1 a/f ratio but he's only making 314hp . . . . I think that's weird becuase I got a friend making 316whp off 10psi on a LS motor but his motor is built. basically though all and all yes your stock internals will be able to withstand 9psi. If people can run 12psi on stock D Series internals . . . . LS motors hav thicker rods and all so yo are good to go =)