Byron Dragway Announces New Requirements for NHRA-Approved Lower Engine Oil-Retention Devices
February 1, 2018
BYRON, IL, February 1, 2018 – In an effort to improve the quality of the racing experience, effective immediately, Byron Dragway will require all cars running 9.99-seconds or quicker (6.39-seconds 1/8-mile) to be equipped with an NHRA-approved lower engine oil-retention device. Further expansion of this rule to include cars 10.99-seconds or quicker (6.99-seconds 1/8-mile) is under consideration for 2019.
A lower engine oil-retention device is defined in the 2018 NHRA Rulebook under General Regulations 1:8.
1:8 LOWER ENGINE CONTAINMENT DEVICE
Must utilize an NHRA-accepted lower engine oil-retention device. SFI Spec 7.1 or 7.2 Lower Engine Containment Device permitted. A properly fitting lower engine ballistic/restraint device mandatory. The NHRA (Byron Dragway) technical staff can accept or reject any device. Any device that fails to perform as required must be replaced or repaired to the satisfaction of the Technical staff prior to any further runs. When used, an SFI Spec 7.1 or 7.2 Lower Engine Containment Device must cover the sides of the block and pan up to within one inch of the head mating surface and extend to within 1 1/2 inches of the front and rear of the cylinder case area. SFI Spec 7.1 devices must be updated/recertified by the original manufacturer at one-year intervals. In classes where specified, a belly pan may be used in lieu of a device attached to the engine. The belly pan must extend from frame rail to frame rail and extend forward of the harmonic balancer and to the rear of the engine block and must incorporate a minimum 2-inch-high lip on all sides unless specified in Class Requirements. Minimum number of slots or holes in the walls to clear frame, steering, or lines permitted. A nonflammable, oil absorbent liner mandatory inside of retention device.
Frequently Asked Question:
Q: Does my lower engine containment device need to meet an SFI Spec?
A: An SFI Spec 7.1 lower engine containment device is required for Pro Modified, Top Alcohol Dragster, Top Alcohol Funny Car, Top Fuel Dragster, and Nitro Funny Car.
Q: How do I know if my lower engine containment device is NHRA accepted?
A: The NHRA Accepted Oil Retention Device list can be found below.
Contact Byron Dragway at 815-391-0000 or click here.