i know that a stock prelude block can only take about 5 psi, because of the aluminum sleeves, but if i just sleeve it, and balance the stock rotating assembly, what kind of psi can i put on the otherwise stock motor?

 

no man.. its the ringlands on the pistons..

if u resleeve at least get some pistons and eagle rods.. i would run AEBS sleeves, je pistons, and crower rods if i were u..

 

oh to answer your question dont go above8-9 if u want it to last little while.

 

safe = 7 psi, run higher octane when possible, not octane booster..
sleeves are made out of fiber reinforced material so upgrading pistons with rings etc will wear out that FRM coat. therefore needing it to be sleeved.
h22a1 has a closed deck block, and h22a4 has an open deck