Roblox Meme Number 9 200 Guess The Mems. The FA20E and FA20F engines have a cast aluminium alloy cylinder head with chaindriven double overhead camshafts per cylinder bank The four valves per cylinder – two intake and two exhaust – were actuated by roller rocker arms which had builtin needle bearings that reduced the friction that occurred between the camshafts and the roller rocker arms.
