Though the Blacktop head encompasses a a lot more open combustion chamber (see “Head combustion- chambers”) it nevertheless has an increased static compression ratio (see “compression ratio”), this is solely as a result of piston structure. The Silvertop piston encompasses a extremely tiny dome with two deeply angled exhaust flycuts, https://rowankifay.is-blog.com/37736845/the-basic-principles-of-4age-20v-for-sale