Dissapointing performance

fishmens67 said

I think the cam is not where you think it is. how far down in the whole are those stock pistons. pick one.
at this point I believe, a spark in time is not the problem.

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I have decreed it 2 times. It is right. I have kb107 pistons, not stock pistons. Pistons are 0.0157" down in hole (0.4 millimeter). Heads milled to 65cc by imms engines. Tests what I have made erlier have shown that it likes less timing at low rpm. (centrifugal timing comes too fast in)