Although the Blacktop head contains a a lot more open combustion chamber (see “Head combustion- chambers”) it still has a higher static compression ratio (see “compression ratio”), this is only due to piston structure. The Silvertop piston features a very tiny dome with two deeply angled exhaust flycuts, two reasonable https://4age-for-sale81997.life3dblog.com/30533439/toyota-4age-engine-for-sale-an-overview