Regardless that the Blacktop head encompasses a a lot more open up combustion chamber (see “Head combustion- chambers”) it however has a higher static compression ratio (see “compression ratio”), this is solely because of the piston style. The Silvertop piston includes a extremely smaller dome with two deeply angled exhaust https://andyrpoli.blogacep.com/36549000/little-known-facts-about-4age-20v-itb