2012 IHRA Rulebook Updates
1/23/12 The information listed below is an overview of the major changes in the class requirements structure and competition standards from the 2012 rulebook. While many of you have already received your copy of the 2012 IHRA rulebook, the online edition will be made available shortly on IHRA.com.
PROSTALGIA FUNNY CAR
Fuel System: IHRA accepted pump with a maximum of 21.0 gpm at 4,000 pump rpm. Down nozzles prohibited. Maximum number of nozzles is 24 with 16 located in manifold and 8 in injector hat. Maximum injector air inlet opening is 45 square inches excluding cross shaft.
Supercharger: Limited to the use of a 6-71 or 14-71 roots type supercharger. High helix units prohibited. OEM or IHRA accepted front driven case mandatory. Specification limits: 5.840 inch rotor cavity diameter and 11.250 inch case width on all models. Maximum rotor length is 15 inches on 6-71 and 19 inches on 14-71 units. The rear of the supercharger all 6-71 units may not extend beyond the motorplate mounting surface on the rear of the engine block. An SFI 14.3 supercharger restraint system, aluminum studs, SFI 23.1 manifold burst panel and a supercharger belt guard are mandatory.
Maximum overdrive limitations:
18.99 % on 6-71 combinations.
14.99 % on 14-71 combinations.
Ignition: Mag limited to single point-type only (no electronic mags or mag amp boxes allowed). Timing advance or retard functions must be a direct function of the driver by mechanical or pneumatic means. A positive ignition shutoff within the reach of the driver is mandatory
TOP SPORTSMAN
This class will be a laddered qualified field at Nitro Jam Events and an All Run field at Pro-Am and TOC Events. Maximum dial-in at Pro-Am and TOC events is 8.00 1/4 mile or 5.30 1/8 mile. Maximum dial-in at Nitro Jam Events is 8.00. Competitors may dial quicker between rounds, but may dial no slower than .10 beyond the slowest qualified car.
TOP DRAGSTER
This will be a qualified and laddered field at Nitro Jam Events and an All Run field at Pro-Am and TOC Events. Maximum dial-in at Pro-Am and TOC events is 7.80 1/4 mile, and 5.00 1/8 mile. Maximum dial-in at Nitro Jam events is 7.80. Competitors may dial quicker between rounds, but may dial no slower than .10 beyond the slowest qualified car.
Weight: Supercharged Big-block Dragster and Altered 1,800 Ibs, NOS Big Block Dragster and Altered 1,700 Ibs, Naturally Aspirated Big-block Dragster and Altered 1,600 Ibs, Supercharged Small-block Altered 1,700 Ibs, Supercharged Small-block Dragster 1,650 Ibs, NOS Small-block 1,550 Ibs, Naturally Aspirated Small-block 1,450 Ibs, 4 and 6 cylinder small block 1,350 Ibs.
SUPER STOCK
Class AA..........5.50 to 5.99
STOCK
Stock Fuel Injection Classes:
AAA .....................6.00 to 6.49
AA .......................6.50 to 6.99
BB .......................7.00 to 7.99
CC .......................8.00 to 8.99
Class AAA, AA, BB and CC is restricted to 2008 or later accepted factory muscle cars.
GENERAL REGULATIONS
Pro-Am Ties: Ties will be broken as follows: 1. Most event win points; if still a tie: 2. most event runner up points; if still a tie: 3. most round points; if still a tie: 4. most record points; if still a tie: 5. most qualifying points; if still a tie: 6. most races attended; In division events are considered first when used as a tie breaker for Pro-Am championship. If still a tie, most total divisional events attended will then be considered: 7. head to head competition 8. If still a tie, furthest in competition at a single event: If still a tie, the money and awards will be split. This is the only method you can use in
keeping your points total. Divisional ties will be broken based upon divisional only.
Rain Outs - (Pro-Am Events) If a competitor is unable to return on the rescheduled date for any Pro-Am event, The entry will be honored at the next seasons event at the original facility. It is the competitors responsibility to retain the original credential or arm band for processing when they return the following season. Pro-Am credentials are not transferable to another Pro-Am event. Pro-Am crew passes are not transferable from one Pro-Am event to another.
Rain Outs - (Sportsman Spectacular - SS or stand alone Nitro Jam - NJ Events) In the event that a participant is unable to return on the rescheduled date of a rained out race, the participant may transfer his entry to another SS or stand alone Nitro Jam event. Stand alone NJ events are defined as events that are not run in conjunction with a Pro-Am points claiming event.
All original credentials (car and driver or crew) must be retained and presented for exchange at time of entry to the rescheduled event. No exceptions.
If the event is rescheduled, crew tickets are valid for the rescheduled date or will be honored at the same SS or stand alone NJ event the next season. Crew passes are not transferable from one event to another.
2011 IHRA Rulebook Revisions and Clarifications
9/14/11 The paragraph listed below is a clarification for the Division 4 Renegades Summit Team Finals competition guidelines listed on the Summit SuperSeries team finals section of ihra.com.
http://www.ihra.com/uploadedFiles/Programs/ET_Bracket/Summit_SuperSeries/D4.pdf
Modified ET – The use of delay boxes, throttle stops and trans brakes are prohibited. Buttons on steering wheels are prohibited. Nothing is allowed in the car that will assist the driver in leaving the starting line. Two steps are allowed on clutch assisted entries only. Pneumatic, air or electric shifters are permitted.
6/28/11 P. 23 Top Dragster: Chassis: Change the 5th sentence of the section to read as follows: Smooth or Hammer tone powder coating is permitted on any SFI rated chassis.
6/22/11 P. 74 Jr. Dragster Program: Replace the second sentence of the first paragraph with the following: Juniors may compete through the calendar year (January 1 - December 31) of their 18th birthday. If a competitor turns 10 during the season, they may finish the year out in the beginner class.
6/13/11 P. 20 Top Sportsman: Weight Minimums: Change the minimum on naturally aspirated Big-Block entries to 2,200 lbs. minimum.
6/13/11 P. 89 Drive Line: Change 3rd to last sentence of the section to read as follows, "Aluminum driveshafts are permitted in all stock classes."
4/25/11 P. 97 Nitrous Oxide Injection system: Delete the 3rd sentence of the section.
4/13/11 P. 94 Helmet: Delete the second to last paragraph in the section.
1/23/11 P. 19 Prostalgia Nitro Funny Car: Ignition: Change the second sentence to read as follows: Timing advance or retard functions must be a direct function of the driver by mechanical or pneumatic means.
1/19/11 P. 47 Stock: Cylinder Heads: Change the valve diameter tolerance from -.005 to -.015 from IHRA specs in the 9th sentence of the section.
1/11/11 P. 35, 41 and 45 Transmission: Delete all references to the flowing: clutchless transmissions prohibited. Clutchless manual transmissions are permitted