dsjohnson15
Recruit
- Joined
- Nov 11, 2010
- Messages
- 1
Hello, what is a good compression ratio for a yamaha 75 hp? Mine checked out at 90, 80, and 85. Also the overheat alarm goes off when I go over 26mph for a few minutes or so. I changed the thermostat, the pop-it valve, water pump, I pulled off the head and had it machined several years ago and am anal about flushing my motor, any suggestions?