At this time it is possible to make the valve timing advance or retard. But what does this mean in reality? Maruha’s slide cam pulley. It is typical to adjust the valve timing using a sliding pulley like this. 1. The opening and closing of the valve. The Miata/MX-5’s B6 and BP engines are DOHC-types (double camshaft).
The 2017 Mazda MX-5 Miata RF is one of the best offshoots of the regular Miata that there has ever been. It keeps the same basic design of the MX-5, but also switches things up with its fastback styling for a more sporty and aggressive look.