21. The intake valves are made from nickel-steel and the exhaust valves from stainless steel. 22. The heads were high-flow items with big ports, and used intake and exhaust valves . 23. Intake valves are titanium and of width, while exhaust valves are width of Inconel. 24. The injectors are cycled from the same camshaft responsible for opening the exhaust valves . 25. The hydrogen can misfire on hot parts like the exhaust valve and spark plugs. 26. The SB2's original 8-degree exhaust valve angle has been retained. 27. Is there any engine out there that keep the exhaust valve open continuously during deactivation? 28. The MCA-Jet system has a small third valve separate from the intake and exhaust valves . 29. The engines had overhead inlet and side exhaust valves . 30. It employs variable timing, which adjusts the exhaust valves depending on speed and load conditions.
