JCurry2885
Seaman Apprentice
- Joined
- Jul 20, 2017
- Messages
- 32
Hello, I have a 1977 Johnson 70hp OB. Currently I am running 93 octane, and have the WOT timing advance set to 14 degrees. Factory WOT timing in 77 was 17 degrees, but have been informed on the forum that its recommended to lower maximum advance to 14 degrees. First question is, am I wasting money by running 93 octane over 87? Also can I run 93 and maybe bump the max advance back up to 17 degrees? Will I gain much of anything by going from 14 to 17? Let me know your opinions.
Thanks!
Thanks!