Engine requirements applicable to all Ultra4 competition vehicles.
Section 2.7 • Common Vehicle Requirements
2.7.1
Engine shall be free of leaks. See Section 10.3.5 ENVIRONMENTAL SAFETY for more information and rules related to environmental concerns and considerations.
2.7.2
Engine vents shall run to a fluid containment system, and dipsticks shall be locking type. See Section 10.3.5 ENVIRONMENTAL SAFETY for more information and rules related to environmental concerns and considerations.
2.7.3
Forestry approved spark arrestors or approved mufflers are required on all vehicles. Exhaust system outlet must extend a minimum of one foot (305mm) past the rear of the occupants’ compartment; be directed rearward out of the body away from the occupants, fuel cells and tires; and be placed in such a manner as to minimize the production of dust. See Section 10.3.5 ENVIRONMENTAL SAFETY for more information and rules related to environmental concerns and considerations.
2.7.4
No entrant may replace a complete engine during an event. Entrant will be deemed to have replaced a complete engine if the block has been replaced.
