I have an M20B25. What is the maximum bore. I'd like to do something like 89mm but I fear that 5mm may be wayyy too much. I think my ctlinder walls are scratched up and basically ruined, so i figure hey, why not make the displacement a bit larger and fix the problem. Buying new pistons woul dbe important then, too.
So, what is the maximum safe bore and the best piston to suit it. Has anyone ever done this?
So, what is the maximum safe bore and the best piston to suit it. Has anyone ever done this?
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