February 2019 Interim Rule Changes/SP1
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February 2019 Interim Rule Changes/SP1
SP1
The 2019 SP1 rules are amended as follows:- Engine
- Engines with the 9.5:1 pistons may use an offset cam timing key.
- The fuel lines may be replaced with lines of the same inner diameter as stock, in the same routing location and of the same length.
- Transmission / Differential
- The 1989 ASG/ASH (2.7) transmission is allowed (gear ratios the same as allowed).
- Suspension / Wheels / Tires
- Brake and clutch bleeders are free as long as they do ot change their function.
- The camber portion of Suspension D is amended to read:
Camber plates are allowed but must be available at retail to the racing public, bolt to the chassis using existing shock mounting holes and standard hardware, do not involve any modification to the shock tower or the shock, and consist of no more than two plates, one of which bolts to the shock, and one to the chassis. The top of the shock rod must not exceed 1.5″ above the adjacent strut tower lip, and for purposes of limiting caster, must be at least 1 3/8″ forward of the back side of the rear top plate mounting studs
- Bodywork C: (Add the following)
- The KBD urethane 944 front valance may also be used.