The new engine cover presented at Spa , alongside with the debut of the F-suct system , has a new upper part which can be separated from the rest cover body to offer more freedom to mechanics to enter inside the cover and reach the engine and F-duct system internals .
The F-duct’s twin inlets are placed on airbox sides while at the rear two extra outlet tubes can be seen .
The floor exhausts were lengthened at Hungary , a change which also triggered the significant elongation to the rear of the sidepods – engine cover . The amount of the elongation that took place can be revealed by the fact that the new cover features a small cut ( purple arrow ) where it meets the upper suspension’s wishbone .
The introduction of the EBD at Valencia forced the team to shorten the length of the engine cover’s rear zone to comply better with the total new rear bodywork .
Renault’s engine cover may look monolithic but is mainly consisted of 3 parts ( the 2 side parts and the upper with the shark fin one ) . On the contrary Mc Laren’s much more complicated cover is consisted of multiple parts due to the F-Duct system which is housed inside and the multiple cooling choices .