Though the Blacktop head contains a much more open combustion chamber (see “Head combustion- chambers”) it nevertheless has the next static compression ratio (see “compression ratio”), this is purely because of the piston design. The Silvertop piston contains a extremely compact dome with two deeply angled exhaust flycuts, two reasonable https://lorenzouayyx.isblog.net/the-basic-principles-of-toyota-4age-blacktop-engine-for-sale-48615636