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WKA America Grand Nationals
Overview
Whiteland Raceway Park
Whiteland, IN
October 23-25, 2020
Resources
Online Registration
Event Schedule
Class Structure
214.1 Kid Karts
Age:
5-7 (attained)
Numbers:
00-99
Engine:
Comer C51 only
Fuel:
Spec – 87 Octane
Weight:
150 lbs.
Tires:
Bridgestone YLC – 10×4.50 (33 1/4 max circumference)
Gear Ratio:
10/89
Notes:
See Section 900 for chassis and bodywork specifications
214.25 Micro ROK
Age:
7-10
Numbers:
00-99
Engine:
Vortex Micro ROK with manufacturer-supplied restricted exhaust header
Carburetor:
Dellorto
Weight:
230 lbs.
Tires:
Bridgestone YLC – 10×4.50–5
Gear Selection:
11/82 – 10/79
Notes:
(1) Must run same tires for entire event. (2) Tires must be new to start each event. (3) Cadet or standard size chassis permitted.
214.1.1 Mini ROK
Age:
8-12
Numbers:
100-199
Engine:
Vortex Mini ROK with manufacturer-supplied exhaust
Carburetor:
Dellorto
Weight:
245 lbs.
Tires:
Bridgestone YLC – 10×4.50–5
Gear Selection:
11/82 – 10/79
Notes:
(1) Must run same tires for entire event. (2) Tires must be new to start each event. (3) Cadet or standard size chassis permitted.
214.4 Mini Swift
Age:
8-12
Numbers:
100-199
Engine:
IAME Mini Swift engine with manufacturer-supplied exhaust
Carburetor:
Tillotson HW-31A
Weight:
245 lbs.
Tires:
Bridgestone YLC – 10×4.50–5
Gear Selection:
11/82 – 10/79
Notes:
(1) Must run same tires for entire event. (2) Tires must be new to start each event. (3) Cadet or standard size chassis permitted.
214.5.1 100cc Junior
Age:
11-15 (attained)
Numbers:
800-899
Engine:
IAME KA100 / Vortex ROK VLR
Carburetor:
As supplied by the manufacturer
Weight:
320 lbs.
Tires:
Bridgestone YLC – 10×4.50-5 / 11×7.10-5
Timing:
VLR .106″ MAX / KA100 .106″
Notes:
(1) Must run same tires for entire event. (2) Tires must be new to start each event.
214.6 IAME X30 Junior
Age:
12-15
Numbers:
700-799
Engine:
IAME X30 with 26mm exhaust header
Carburetor:
As supplied by the manufacturer
Weight:
330 lbs.
Tires:
Bridgestone YNB – 10×4.50-5 / 11×7.10-5
Notes:
(1) Airbox required. (2) Max exhaust length (as raced) is 16 3⁄4” as measured from the back side of the header flange, around the right side of the header, connector and pipe to the first weld at the end of the divergent cone.
214.6.1 ROK GP Junior
Age:
12-15
Numbers:
200-299
Engine:
Vortex ROK GP with manufacturer-supplied exhaust restrictor
Carburetor:
As supplied by the manufacturer
Weight:
320 lbs.
Tires:
Bridgestone YNB – 10×4.50-5 / 11×7.10-5
Notes:
Airbox required.
214.3.1 Briggs Cadet 206
Age:
7-12
Numbers:
400-499
Engine:
Briggs LO206 Sealed Engine
Exhaust:
RLV #5506 or #5507
Carburetor:
As supplied by the manufacturer with Locking Cap #555726
Slide:
Briggs Green .490 Part Number #555740
Fuel:
Spec – 87 Octane
Weight:
265lbs.
Tires:
Bridgestone YLC – 10×4.50–5
Notes:
(1) Must run same tires for entire event. (2) Tires must be new to start each event. (3) Cadet or standard size chassis permitted.
214.9 100cc Senior
Age:
15+
Numbers:
900-999
Engine:
IAME KA100 / Vortex ROK VLR
Carburetor:
As supplied by the manufacturer
Weight:
360 lbs.
Tires:
Bridgestone YLC – 10×4.50-5 / 11×7.10-5
Timing:
VLR .120″ MAX / KA100 .106″
Notes:
(1) Must run same tires for entire event. (2) Tires must be new to start each event.
214.8.1 ROK GP Senior
Age:
15+
Numbers:
300-399
Engine:
Vortex ROK GP with manufacturer-supplied exhaust
Carburetor:
Dellorto
Weight:
355 lbs.
Tires:
Bridgestone YNB – 10×4.50-5 / 11×7.10-5
Notes:
Airbox required.
214.8.2 Rok GP Masters
Age:
32+ or 190 lbs+ body weight
Numbers:
600-699
Engine:
Vortex ROK GP with manufacturer-supplied exhaust
Carburetor:
Dellorto
Weight:
390 lbs.
Tires:
Bridgestone YNB – 10×4.50-5 / 11×7.10-5
Notes:
Airbox required.
214.11 ROK Shifter
Age:
15+
Numbers:
400-499
Engine:
Vortex ROK Shifter with manufacturer-supplied exhaust
Carburetor:
Dellorto
Weight:
395 lbs.
Tires:
Bridgestone YNB – 10×4.50-5 / 11×7.10-5
Notes:
Airbox required.
214.12 ROK Shifter Masters
Age:
32+ or 190+ bodyweight
Numbers:
500-599
Engine:
Vortex ROK Shifter with manufacturer-supplied exhaust
Carburetor:
Dellorto
Weight:
410 lbs.
Tires:
Bridgestone YNB – 10×4.50-5 / 11×7.10-5
Notes:
Airbox required.