Have a look a these videos, the guy basically tore his b18c, rehoned and turboed it (ignore the turbo part, just pay attention to how he honed it at home himself), the second link includes dyno footage. Both videos are of two different cars.
http://www.youtube.com/watch?v=QmLfS2ESXEE
http://www.youtube.com/watch?v=lLARm9Pk-7Y
Hope that helped give you some diy hope. These motor builds can be a huge money pit, be careful and have fun
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