approx 12.5:1
The formula to calculate the thermal efficiency of an Otto cycle engine is: Thermal Efficiency 1 - (1 / compression ratio)
The Otto cycle efficiency formula is given by: Efficiency 1 - (1 / compression ratio)(-1), where is the specific heat ratio of the working fluid. This formula can be used to calculate the efficiency of an engine by plugging in the compression ratio and specific heat ratio values. The higher the efficiency value, the more effectively the engine converts fuel into useful work.
The correct engine compression on a 1972 Datsun B110 is a 15:1 compression.
2.5 liter Petrol 8-1 diesel 25-1 compression
The compression ratio of a Diesel ranges from 14:1 to as high as 25:1. I agree just depends on engine.
VG30e had 9:1 compression
It has a compression ratio of 17.5:1
9.5:1
9.1:1 is the compression ratio for the 8.1
9.4:1
10.25:1
8.5 to 1