While the Blacktop head includes a additional open up combustion chamber (see “Head combustion- chambers”) it still has a greater static compression ratio (see “compression ratio”), this is only due to piston style and design. The Silvertop piston encompasses a very little dome with two deeply angled exhaust flycuts, two https://4age20vblacktop16936.blog-mall.com/31899780/4age-20v-blacktop-fundamentals-explained