Here are the specs of my initial M20B28 engine build. I started with a standard M20 2.5 that was mostly complete but partially disassembled. A 2.7 crankshaft, connecting rods, and flat-top pistons came with it. The 2.7 rods and pistons are commonly used in turbo builds. I used the 325i rods and custom Wiseco pistons.... Continue Reading →