Originally Posted by Running925
yes.. supposidly stock sleeves can handle 450-500hp .. it's the pistons / rods that will fail. so if you went with forged internals, & made sure the cylinder walls didn't sway via block guard, & used stronger head studs.. u should be able to pull 450-500hp out of a b18 bottom end without sleeving.
i'll make my attempt to prove this when spring rolls around!
Some guy on H-T got over 750 whp out of stock sleeves with forged internals, so it is really all in the tuning.
Throwing around psi numbers is worthless. It all depends on the tuning and the CFM the turbo can flow because we all know that a smaller turbo makes less power at a given psi than a larger one.