Just want to know about what is the max pressure the stock b16a sleeves can handle? If I was going to go turbo I would keep the pressure at about 12 to 15 psi...

 

well, the turbo's boost pressure isn't the number you are looking for. Turbos flow different volumes of air at the same boost pressure, yielding different amounts of power. Internal pressures and temperatures are more what you are concerned about, which is relative more to horsepower, not boost pressure.

then a concrete number cannot be established because a lot matters in the tune/fuel management. I plenty of people have made 250-270 hp on stock b16s and they hold up just fine. Others have made even more with forged pistons and rods while maintaining stock sleeves.

 

People have made over 500whp on b series stock sleeves, theres so many variables to give a def answer.