Regardless that the Blacktop head incorporates a additional open up combustion chamber (see “Head combustion- chambers”) it continue to has a higher static compression ratio (see “compression ratio”), this is only because of the piston layout. The Silvertop piston encompasses a really smaller dome with two deeply angled exhaust flycuts, https://dantefmqrv.laowaiblog.com/30556855/considerations-to-know-about-jdm-toyota-4a-ge