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The FB20 in its current state would need a stroke reduction and overbore (more square), longer connecting rods, and higher compression ratio if it's going to be a NA high rev engine. The 1.44:1 rod to stroke ratio is basically garbage for high rpm and bhp applications (both the late 2ZZ-GE and K20A2 had 1.62:1 and street bikes and racing applications can exceed 2:1, optimal is stated at 1.75:1). Even with revised intake and exhaust manifolds, heads, camshafts, and D-4S injection system I think the FB20 engine would take a huge compromise in wear rate at high rpm ranges in addition to the power increase to 200bhp without some altercation to the initial economy set up, this is more than just tossing in forged pistons and connecting rods. That's why I think we've heard basically nothing about this engine.
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