Although the Blacktop head encompasses a far more open combustion chamber (see “Head combustion- chambers”) it however has a greater static compression ratio (see “compression ratio”), this is only due to the piston design. The Silvertop piston contains a pretty small dome with two deeply angled exhaust flycuts, two average https://beaurooyp.fare-blog.com/28971323/what-does-toyota-4age-for-sale-mean