TypeR head doesnt make it B20typeR, B20's were slow revving lousy SUV application motors, they had good torque but their gearing sucked, their bottom sucked (redlines were hell too low), cranks were weak, bearings were weak, sleeves were weak, rods were weak, lower compression pistons and poor cams. you're running a b18c head aka GSR head, you're prolly running GSR's redline too which means your b20 motor bottom is running at risk, get the redline lowered before its all gone. just mine two cents!
cheers!
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