415HP from 318ci IS POSSABLE!!

BJR Racing said

Were they the KB107's? If so I don't think that they have the ports. But they do have a compression chamber thats machined and solid no ports.

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Let me check on that......

You are correct! I just took a look at a pic I had and it has the machined compression chamber but no gas relief, just the drainback holes behind the oil ring lands.