Although the Blacktop head encompasses a more open combustion chamber (see “Head combustion- chambers”) it however has a higher static compression ratio (see “compression ratio”), this is solely due to piston style. The Silvertop piston incorporates a extremely little dome with two deeply angled exhaust flycuts, two reasonable inner flycuts https://jasperkmlmk.blog-a-story.com/11719650/indicators-on-4age-20v-you-should-know