Although the Blacktop head includes a extra open up combustion chamber (see “Head combustion- chambers”) it nevertheless has a higher static compression ratio (see “compression ratio”), this is solely because of the piston design and style. The Silvertop piston includes a incredibly compact dome with two deeply angled exhaust flycuts, https://jasperppnie.smblogsites.com/31329354/5-essential-elements-for-4age-blacktop-for-sale