So as an example if an individual fitted a Silvertop oil pump on the Blacktop engine then the Blacktop’s timing belt pulley would need to become rotated 50 % a tooth further relative to the protrusion on the Silvertop oil pump. Pictured down below will be the Blacktop pulley put https://4ageenginesale58147.isblog.net/everything-about-4age-engine-for-sale-48609276