- Joined
- Jul 14, 2017
- Messages
- 2,448
I have an old truck air compressor pump with no specs for it. I took off the head and measured the cylinder bore and stroke and want to calculate how many CFM i can expect and how big of a electric motor i need to drive the compressor pump. The cylinder is 74mm bore X 28mm stroke that makes the cylinder 120cc, now how to calculate CFM and how much horsepower i need to turn it and how fast.