lobe separation angle

The wider lobe separation angle closes the intake valve later and reduces cylinder pressure, so that is where it's detonation resistance comes from. Really wide lobe separation angles are used in boosted applications. Many later model engines use wide lobe separation angles to reduce overlap for idle quality and fuel economy.


The only reason I use a wider lobe separation angle is to smooth out the idle and increase idle vacuum.

[ame]http://www.cranecams.com.au/pdfs/MAY14-Lobe_separation_article.pdf[/ame]