andries861@gmail
Cadet
- Joined
- Jun 14, 2023
- Messages
- 12
What are ecceptable compression numbers for older mercury outboard? Particularly 60hp bigfoot?
115.
If all the cylinders are the same at 115, I think you will be alright. A lot depends on exactly how "old" the motor is...but around the 120 mark would be acceptable for an older motor...