To improve sealing characteristics, the entire gasket surface was silicon coated.
Relief valves at both ends of the rocker shafts maintained stable oil pressure for the hydraulic lash adjusters..
While the intake valves had individual rocker arms, a siamese rocker arm was used for each two exhaust valves.
The position of spring washers on the steel rocker shaft maintained rocker alignment and spacing.
Furthermore, the timing belt had an automatic tensioner which allowed for thermal expansion and contraction.
Due to the cylinder head offset, the left camshaft was longer than the right camshaft to align the cam belt sprockets.
Both camshafts were driven by a single belt which had a round tooth profile for quiet operation and was constructed of wear-resistant double canvas and heat resistant rubber materials with a wire core.
Description: The all-aluminium rocker arms had a sintered metal slipper as the cam contact and a pressed aluminium bushing was used for each rocker arm bearing surface.