"theoretically" can run over 10:1 compression with 93 octane"
The .050" duration is not the test, it's where the intake valve closes ABDC at nominal duration.
There are too many variables left out to consider this a reliable method.
If you increased the piston to head clearance @ TDC to drop that 1/4 point, you also reduces your anti-knock protection. How far is it now?
Last edited by panic; 10/05/23 02:30 PM.
