Regardless that the Blacktop head features a far more open up combustion chamber (see “Head combustion- chambers”) it nevertheless has the next static compression ratio (see “compression ratio”), this is solely due to the piston layout. The Silvertop piston encompasses a incredibly little dome with two deeply angled exhaust flycuts, https://hectorjuagf.topbloghub.com/37687372/the-definitive-guide-to-toyota-4age-blacktop-engine-for-sale