While the Blacktop head encompasses a a lot more open combustion chamber (see “Head combustion- chambers”) it nevertheless has the next static compression ratio (see “compression ratio”), this is solely as a result of piston structure. The Silvertop piston encompasses a very tiny dome with two deeply angled exhaust flycuts, https://4age-20v89809.suomiblog.com/4age-for-sale-things-to-know-before-you-buy-47046087