ULTIMATE STREET

© Ortega Global Solutions 2017

All OGS1320 events are hosted at NHRA sanctioned tracks, therefore all NHRA safety rules and Guidelines must be followed at all times. It is the sole responsibility of each competitor to ensure that their vehicle is in absolute compliance of any and all 2017 NHRA rules. OGS1320 class rules are solely for the purpose of insuring side by side competition and in no way shape or form supersede or conflict with NHRA safety rules and Guidelines. All NHRA safety rules and Guidelines must be followed at all times during the course of each event.

OGS1320 reserves the right at any time to inspect, seal for inspection, and/or tear down a participant’s vehicle. Every vehicle is subject to such further technical inspection at any time before, during or after an event, at the time and in the place and manner directed by an OGS1320 tech official. Not complying in full with any inspection request will result in disqualification for further competition and such other penalties as deemed appropriate by OGS1320 management.

OGS1320 PRESS RELEASES
Press Releases are sent via email. If you are a ULTIMATE STREET racer, please inform tech@ogs1320.com so we can add you to our email list. Send your full name, email address, and class you race.

CLICK HERE FOR RACER GUIDELINES

ULTIMATE STREET

MINIMUM WEIGHTS
ultimatestreet_weights

ENGINE
Engine must be an import or a domestic sport compact overhead-cam, production-based design. Aftermarket blocks permitted. Engine swaps of same or different manufacturer of body permitted. Dry sump oil system or external oil pumps permitted.

ENGINE CONTAINMENT DEVICE
Engine diaper or catch-pan device to capture oil and debris in event of engine failure is mandatory. Where exhaust header passes directly under oil pan, two-piece diaper may be utilized. AWD vehicles using OEM manual-transmission case must also have such a device for the transmission, to capture oil and debris in event of transmission failure. If catch-pan device is used, catch pan must employ minimum 2-inch-high lips on all sides. Lips must be coved or curved inward, so as to contain oil in pan. Catch pan must cover entire area below engine/transmission. Catch pan must extend from radiator support to firewall and from framerail to framerail. In all cases, lips must be adequate enough to contain oil in the catch pan.

Should a competitor spill excessive oil from the catch pan and debris onto the track, he or she may be disqualified from further competition at the sole and absolute discretion of the event director until catch pan is upgraded, regardless of height of pan lips or pan design.

EXHAUST
Not required.

FUEL
Any gasoline or E-85 based fuels permitted. Methanol is prohibited.

FUEL SYSTEM
Fuel cells permitted. Must be in stock location or trunk area. (See NHRA General Regulations 1:5). Mechanical fuel pumps permitted on AWD cars only. RWD cars must run electric fuel pumps. AWD cars may also run electric fuel pumps.

LIQUID OVERFLOW
See NHRA General Regulations 1:7.

NITROUS OXIDE
Permitted.

TURBOCHARGERS
Permitted in single or twin configurations (See weight chart). Compressor wheel inducer diameter may not to exceed values on weight charts, and contours of wheel may not be “stepped, notched, or clipped”; e.g., the contours must be continuous features from the inducer to the wheel exducer. Exotic material wheels prohibited. Modified compressor housings are prohibited. Turbochargers are measured at the inducer wheel where the leading edge of the inducer wheel meets the housing. To further clarify the maximum exducer wheel size applies to the entire size of the wheel. No part of the wheel may be larger than the exducer limits specified.

INTERCOOLERS
Air-to-Air or Liquid-to-Air intercoolers permitted. Water injection and methanol injection are prohibited.

TRANSMISSION, MANUAL
Automated, timer-type, pneumatic, electric, electronic, hydraulic, etc. shifting mechanisms are prohibited. Each individual shift must be a function of the driver and controlled manually (Driver must pull the lever). Non-OEM or aftermarket shifter must be H-pattern for manual transmission. Transmission/Shifter must be H-Pattern unless transmission is sequential. Sequential transmissions only permitted on rotary-powered cars. Strain gauges are permitted.

FLYWHEEL SHIELD, MANUAL TRANSMISSION
All cars using a clutch and running quicker than 11.49 or faster than 135 mph must be equipped with a flywheel shield made of 1/4-inch-minimum-thickness steel plate. Shield must surround the bellhousing completely except for area of flywheel shield adjacent to differential and axle shaft. Shield may be multi-piece with pieces bolted together using minimum 3/8-inch-diameter Grade 5 or M10 class 8.8 bolts; may be attached to engine and/or bellhousing. In lieu of shield, a blanket meeting SFI Spec 4.1, completely surrounding the bellhousing, is permitted. (See NHRA General Regulations 2:5, 2:6, 2:9).

CLUTCH, MANUAL TRANSMISSION
Slipper-style and adjustable clutches are prohibited. The use of electro-mechanical clutch release mechanisms is prohibited. Clutch must be fully operated by driver’s foot.

TRANSMISSION, AUTOMATIC
Automatic transmissions are permitted. Trans-brakes are permitted. All cars using an automatic transmission and running quicker than 10.99 or faster than 135 mph must be equipped with a transmission shield meeting SFI Spec 4.1, a flexplate shield labeled as meeting SFI Spec 30.1, and a flexplate labeled as meeting SFI Spec 29.1.

DRIVELINE
Aftermarket driveline components permitted. Bolt-on straight axle conversions on independent rear suspension cars are permitted.

BRAKES
Four-wheel hydraulic brakes are mandatory. Staging brakes permitted. Power brake delete kits are permitted. See NHRA General Regulations 3:1.

SUSPENSION
Stock front and rear suspension is required. The use of vehicles stock front and rear suspension mounting is also required. Aftermarket/lightweight front control arms, rear control arms and sub-frames/K-members are permitted. Sub-frame connectors are permitted. 4-link and ladder bar rear suspensions permitted, but the vehicle must run a drag radial/DOT style rear tire. Wheelie bars are prohibited.

CHASSIS
OEM/Stock chassis, with complete OEM floor pan, frame rails and firewall mandatory. Wheel tubs permitted if the vehicle has a 4-link or ladder bar rear suspension. Full tube chassis are prohibited. Engine must be located in OEM location for body used. Notching of chassis for clearance is permitted. Roll bar mandatory in any car running 11.49 or quicker; roll cage mandatory in any car running 9.99 or quicker or 135 mph or faster. Roll cage in cars running 9.99 or quicker must be inspected every three years by NHRA and have serialized sticker affixed to roll cage before participation. See NHRA General Regulations 4:10, 4:11, 10:6.

BALLAST
Permitted. See NHRA General Regulations 4:2.

GROUND CLEARANCE
Minimum 3 inches from front of car to 12 inches behind centerline of front axle, 2 inches for remainder of car (except for exhaust more than 12 inches behind centerline of front axle).

PARACHUTE
Mandatory on any vehicle running 150 mph or faster. See NHRA General Regulations 4:8.

TIRES
RWD: Maximum slick or DOT tire size 28.0” X 11.5”. Retreads, space-saver spares, or any other non-DOT-approved tires are prohibited.

AWD: Maximum slick or DOT tire size 26.0” X 8.5”. Retreads, space-saver spares, or any other non-DOT-approved tires are prohibited.

INTERIOR
Complete interior including factory dashboard, door panels, carpeting etc. mandatory. Rear seats and rear interior may be removed. Two front seats are mandatory. Aftermarket seats permitted, but must be fully upholstered.

BODY
Any year vehicle is permitted, but must be an import/sport compact body. Lightweight body panels limited to hood, fenders, and deck lid. Carbon fiber roofs are allowed. Lightweight OEM replica/style doors permitted. Doors must open and close from inside and outside. OEM steel quarter panels are mandatory. Mild customizing and body kits permitted, but must retain full-bodied appearance; with minimum two functional doors One-piece front ends are prohibited. Chopped roofs are prohibited.

STREET EQUIPMENT
Complete headlight and taillight assemblies (all) mandatory; must be operative. One headlight may be removed for intake ducting.

WINDSHIELD AND WINDOWS
Complete OEM windshield and windows. Factory appearing polycarbonate/lexan windows are permitted.

BATTERIES
Batteries must be securely mounted; may not be located in driver compartment unless sealed off per General Regulations. See NHRA General Regulations 8:1.

IGNITION
Two steps, rev limiters, etc. permitted. See NHRA General Regulations 8:1, 8:3, 8:4, 8:5.

MASTER CUT-OFF
Mandatory on any car running 9.99 or quicker, or 135 mph or faster, or on any car where battery is relocated to trunk area of vehicle. See NHRA General Regulations 8:4.

COMPUTER
Prohibited. See NHRA General Regulations 9:1.

DATA RECORDER
Permitted. See NHRA General Regulations 9:2.

FIRE SUPPRESSION SYSTEM
Permitted; must be securely mounted. See NHRA General Regulations 9:3.

TOW VEHICLES
Permitted. Vehicles must get to scales under own its own power.

WARM-UPS
See NHRA General Regulations 9:4, 9:12.

CREDENTIALS
All competitors must have competition number and membership number.
Valid NHRA competition license mandatory for driver of any vehicle running 9.99 or quicker. All drivers running 10.00 seconds or slower must have a valid state- or government-issued driver’s license beyond a learner’s-permit level or valid NHRA competition license. See NHRA General Regulations 10:4.

DRIVER RESTRAINT SYSTEM
Three-inch-wide driver restraint system labeled as meeting SFI Spec 16.1 mandatory in any car required to have a roll bar or roll cage. System includes crotch strap and must be updated at two year intervals from date of manufacture.
All other cars, OEM restraint system mandatory. See General Regulations 10:5, 10:11.

HELMET
See NHRA General Regulations 10:7.

NECK COLLAR
Mandatory on driver of any car running quicker than 9.99 seconds and/or faster than135 mph. See NHRA General Regulations 10:8.

PROTECTIVE CLOTHING
9.99 to 7.50 or any car exceeding 135 mph:
Jacket and pants meeting SFI Spec 3.2A/5 and gloves meeting SFI Spec 3.3/1 mandatory.

Ethanol fuel safety requirement as follows: Suit meeting SFI Specs 3.2A/15, gloves and boots meeting SFI Spec 3.3/5 mandatory.

All others, see NHRA General Regulations10:10

ANY MODIFICATION THAT DEVIATES FROM THE RULES WILL BE A VIOLATION AND WILL CAUSE IMMEDIATE DISQUALIFICATION FROM THE EVENT AND A PRESS RELEASE WILL BE CREATED WHY THE RACER IS DISQUALIFIED.

PLEASE DIRECT ALL TECH RELATED QUESTIONS OR ISSUES TO TECH@OGS1320.COM

Final call and rule interpretation will always be decided by tech officials. All racers who participate at OGS1320 events are agreeing to obey tech official decisions.

© Ortega Global Solutions 2017