ERM, needle in a haystack! What car? What engine? Turbo or N.A???? petrol or diesel

Combustion chamber size isn't measured in cc's its measured by the ratio to which the pisont compresses the air fuel mix in the cylinder. Say 10:1 is typcal for a petrol N/A car, 15:1 for a Diesel, 8:1 for a turbo.