| Date |
Event |
| 15/03/2009 |
Compak Attak |
| 18-19/04/2009 |
WILLOWBANK QLD TINTOPS STAUNCH SUPPLEMENTS PROSTREET MEETING |
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| Modified Street Unblown Rules |
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Rules for this class are the same as Modified Blown but motors must be naturally aspirated. Meaning the use of Nitrous Oxide, Superchargers or Turbo chargers are prohibited.
FRAME / CHASSIS
1.1 All vehicles must retain standard front suspension, must retain factory control arm, stock front cross member may be scalloped for sump clearance. In American bodied vehicles (originally LHD) substitution of local front end of similar design to standard is permitted, i.e. Holden HQ-WB front end in “55-57” Chevrolet
1.2 Firewall must remain standard. Notching for distributer is permitted
1.3 Inner rear wheel guards may be moved inwards
1.4 Standard suspension points can be altered, shock absorber location and cars that came standard with leaf springs can be moved
1.5 Coil overs suspension is permitted for tyre clearance
1.6 Chassis rails (rear) may be notched for tyre clearence but not moved or rerouted. Chassie rails may be notched to an area of 100x100mm or equal to this surface area. Chassie rails may be taken in to a third of the chassie rails width. For eg; If the chassie rail is 60mm wide it may be notched in 20mm (1/3 of the rails width.) Material removed from the chassie rail must be replaced with the same thickness material or thicker
1.7 Four links and ladder bars are not permitted
1.8 Tramp rods, Slapper bars, Caltrac bars or any other similar devices may be used, any other traction devices (eg. torsion bars) must first be shown to APSA official and left up to APSA discretion or next APSA meeting if permissible
1.9 Fibreglass panels are restricted to boot and bonnet lids and bumperbars
1.10 Front windscreen must remain glass all other surounding glass me be changed to lexan as per ANDRA specifications
1.11 Original dash board may be replaced by either fibreglass or steel
WHEELS AND TYRES
2.1 Maximum diameter 15”
2.2 Maximum tyre width and height 29.5”x 12.5” as marked on side wall and in measurement, no “W” tyres permitted. Tyres will be measured on race days with an open template. If tyres do not fit within template those tyres will not be permitted on the track
2.3 Front tyres must be a minimum width of 3.5”
SUPERCHARGERS / TURBO CHARGERS / NITROUS OXIDE
3.1 Not allowed
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