While the Blacktop head contains a more open combustion chamber (see “Head combustion- chambers”) it even now has a better static compression ratio (see “compression ratio”), this is solely due to the piston structure. The Silvertop piston incorporates a very tiny dome with two deeply angled exhaust flycuts, two average https://angelodelpu.ttblogs.com/10932388/examine-this-report-on-4age-20v-itbs