Aikaru
Active Member
- Local time
- 3:46 AM
- Joined
- Sep 3, 2021
- Messages
- 268
I'm currently re-building my top end 80cc engine. I'm installing an expansion chamber exhaust, and one of those square high compression heads. I was planning to run 87 octane on it with a 32:1 ratio of gas and oil. However, with some thinking, I wondered if the new exhaust and the new compression head will cause detonation with 87 octane fuel. Should I go to a higher octane? If so what octane should I go to? I want to make sure this engine performs perfectly. Thank you.