× Auto Repair Pros Member Benefits TechHelp Knowledge Base Forums Resources My iATN Marketplace Chat Pricing About Us Join Industry Sponsors Video Members Only Repair Shops Auto Pro Careers Auto Pro Reviews
Join Now
International Automotive Technicians Network
Re: Octane questions?
Posted to R.P.M. Forum on 5/7/2012

I think of it as Peak Cylinder Pressure.

Ignition timing, Flame speed, cylinder head, valve timing, compression (and more) all need to work together so the peak cylinder pressure happens just after TDC (top dead center).

Slow fuel needs more time and/or mo... Login to read more.