XDR RULES
MagnaFuel XDR Presented by Brandon McBride Mac Tools is a heads-up class for all types of vehicles. Rear suspension may utilize ladder bar or four-links (no full tube chassis). Legal combinations include the use of nitrous oxide, supercharger, turbocharger and naturally aspiration at different weight breaks for parity. All entries must compete on a 12 inch-wide or smaller M/T Radial Tire (including the 3763X 315 Pro Radial at a 100lb weight add) or a 29.5×10.5 or smaller Slick
MAGNAFUEL XDR will run on a 1/8-mile format with an all-run field
BODY:
The car must retain its original appearance and profiles. Aftermarket fiberglass or carbon fiber replacement panels are limited to hood, front fenders, doors, deck lid and bumpers. One-piece front ends are permitted, but must retain factory head light, grille and bumper appearance.
BRACKET RACING AIDS:
The use of bracket racing aids such as optical sensors, delay boxes, stutter boxes, and throttle stops are not allowed.
FIREWALL:
Must retain in original factory location and be constructed out of sheet-metal. Notching of factory firewall for valve cover clearance is allowed. Firewalls that are moved back from the factory location will receive a 50lb weight penalty.
FRONT SUBFRAME:
All sub framed or full framed cars must retain complete stock front subframe from firewall forward. Frame connectors or rear frame rails may not pass engine firewall, except for the following exceptions. The 62-67 Chevy II’s and 64 1/2-68 Mustangs and similar cars with bolt-on front K-members, must retain stock or aftermarket bolt-on front subframe. The subframe must be a bolt on (not welded, unless kit is OK by PSCA officials) to factory mounting location. Frame connectors or rear frame rails may pass firewall location, but not exceed where original front subframe mounts to the body. All late model Mustangs must retain factory front subframe from firewall forward. Stock or direct fit aftermarket K-members are permitted but must be bolted in factory location using factory bolt holes. Cross members on all front sub frames may be altered or removed for oil pan clearance.
FRONT SUSPENSION:
All cars must retain stock suspension, aftermarket tubular control arms, coil over kits, or OEM front strut retrofits are permitted. Replacement Bolt-on Lightweight K-Members are legal, but must be a direct bolt on, no welding modifications permitted. Stock wheelbase will be enforced on all vehicles. You can weld tubes from your roll cage to the front suspension. **The only front suspension bolt-on kit deemed legal by the PSCA are the CHRIS ALSTON, AJE, HEIDTS, Smith Racecraft and *FATMAN bolt-on kits (for 62-67 Nova’s, 67-69 Camaro’s & early Mustangs) Total Control Products Coil Over Conversion Kits, and The Rod & Custom Motorsport Mustang II kit for 64 1/2-66 Mustang, Part #RC-106, FDC Gen II Chassis & Skinny Kid front end kits for late model Mustangs…. Kits must be installed as instructed and not modified.
K-MEMBER:
Aftermarket factory-replacement-type K-member permitted but must attach to the chassis using only the original factory OEM- type mounting bolts. No part of the K-member may be welded to the chassis.
ENGINE:
Cubic inch limits. (see weight guide below)
ENGINE MOUNT LOCATION:
The maximum allowable engine setback from the center line of the number-one spark-plug hole to the center line of the front spindle is 2 inches, except in those vehicles in which the engine was factory installed at a distance greater than 2 inches behind
the spindle. In both cases, the engine must be mounted in front of the Original Factory Firewall Location. For those cars with the firewall moved back and your engine is more than 2′′ and Less than 4′′ from the center line of the number-one spark-plug hole to the center line of the front spindle, you will be penalized an additional 50lbs
CYLINDER HEADS:
Any cylinder head is allowed if only 1 spark plug per cylinder is functional.
FUEL:
Gasoline & Alcohol only (No Nitro) The PSCA reserves the right to check gasoline at any time during competition. The addition of chemical additives intended to alter the makeup of the gasoline for increased performance is strictly prohibited. During fuel check, a competitor must identify the brand of gasoline being used. The sample will be considered illegal if it does not match the baseline results (ex. color, dielectric reading +or-.2, and chemical tests) logged by PSCA. Failure to pass fuel check is grounds for dis allowance of the run during competition and disqualification from the event during eliminations.
NITROUS:
Any nitrous combo is legal. Water Injection is legal
SUPERCHARGER:
Roots up to a 14.71 (No Screwchargers) See weight adds.
TURBOCHARGER:
Twin Turbo 88mm Max ea. / No-Limit on a Single
REAR TIRES:
Mickey Thompson 3558, 3062r, 3362r or 3654x Radials / 3062s, 3055s or any 28×10.5 or shorter/narrower slick (Add 100 lbs for M/T 3763x 315 Pro Radial or M/T 3062w)
WHEEL BASE:
Must retain stock wheel base with a maximum variation right to left and front to back of one inch.
MAGNAFUEL XDR WEIGHT GUIDE:
Base Weight (All weights are race-ready, car with driver)
4 Cly W/Any Power Adder……………………………………..2350 lbs
V/6- W/Nitrous………………………………………………………2200 lbs
V/6 W/Turbo or Blower………………………………………….2500 lbs
I/6 W/Turbo or Blower & Nitrous……………………………..2600 lbs
Small Block W/Nitrous…………………………………………..2250 lbs
Small Block W/Roots Blower………………………………….2800 lbs
Small Block W/Blower (Up to 4.5 Inducer Diameter)……………2750 lbs Small Block W/Blower (4.51- 4.84 Inducer Diameter)…………..2850 lbs Small Block W/Blower (4.85 to 5.47 Max Inducer Diameter)….2900 lbs Small Block W/Single Turbo …………………………………..2850 lbs
Small Block W/Twin Turbo Up to 76.50mm……………..3050 lbs
Small Block W/Twin Turbo 76.51 to 88mm ……………..3100 lbs
Big Block W/Nitrous (up to 570ci)…………………………….2550 lbs
Big Block W/Nitrous (571 to 600ci)……………………………2600 lbs
Big Block W/Nitrous (601 to 650ci)……………………………2650 lbs
Big Block W/Nitrous (651ci & up)……………………………..2700 lbs
Big Block Roots SC………………………………………………..3100 lbs
Big Block Centrifugal SC (up to 600ci)………………………3100 lbs
Big Block Centrifugal SC (601ci & up)……………………….3200 lbs Big Block Single Turbo (up to 600ci)…………………………3100 lbs Big Block Single Turbo (601ci & up)………………………….3200 lbs Big Block Twin up to 88mm Turbo ……………………………3350 lbs
WEIGHT ADDS & BREAKS:
Add 50 lbs. For Non-Factory Location Firewall
Add 50 lbs. For Engine Set-Back over 2′′ but not to exceed 4′′ (#1 Spark
Plug behind Front Spindle Centerline)
Add 75 lbs for M/T 295/65-15 Drag Radial PN 3558
Add 100 lbs for M/T 3763x 315 Pro Radial & 3062w
Deduct 50 lbs. For Using a “Blo–Thru” Carb(s) on a Boosted Combo
Deduct 50 lbs. For Stock Suspension (All attaching points in stock locations – excluding shocks) “Except 76.5mm to 88mm TT Combo’s”
Deduct 50 lbs. For Using 275x60x15 Drag Radial or 28×10.5 Radial Slicks “Except 76.5mm to 88mm TT Combo’s”
Deduct 200 lbs. For Mod Motor Combo’s
Deduct 100 lbs. For Stock Bore Space on Big Block Nitrous Combos
Deduct 400 lbs. For No Power Adder (off Nitrous Combo’s weights)
MAGNAFUEL XDR REQUIRED CLASS DECALS
CLASS TITLE SPONSOR DECAL:
“MagnaFuel” decal must be installed on base of windshield on the Driver’s side. (Bottom right hand side when looking at front of vehicle windshield)
CLASS PRESENTED BY SPONSOR DECAL:
“McBride Mac Tools” decal must be installed on base of windshield on the Passenger’s side. (Bottom left hand side when looking at front of vehicle windshield) Decals will be available during registration at the SCSN Event Trailer
PSCA SERIES DECALS:
“PSCA” Decals must be placed on both left & right sides of race car on the 1/4 Window, 1/4 Panel or Side of Rear Wing in a highly visible location
PSCA CLASS SPONSOR DECALS:
“Centerline Builders” Decal must be placed on the rear 1/4 Window, 1/4 Panel or Side of Rear Wing in a highly visible location
All Decals will be available during registration at the PSCA Event Trailer during Sign-Up
Contingency Program & Contingency Decals:
All contingency decals may appear anywhere on the vehicle in a clear and organized fashion. Contingency decals may not be overlapped or modified. Most decals are available at the PSCA Event Trailer, but in the event the PSCA does not have the decals in stock, it is the racer’s responsibility to obtain the proper decals to be eligible for the Contingency payout.
RACE DAY POLICY’S
FIELD SIZE:
XDR will have time trials with an “ALL-RUN FIELD”
ALTERNATING LANES DURING TIME TRIALS:
Each XDR driver must alternate lanes during time trials. If you choose to ignore this rule, your second consecutive pass in the same lane on the same day will be disqualified.
ELIMINATION’S:
Drivers will draw Poker Chips prior to each elimination round to determine pairings. #1 Qualifier will draw first, followed by the rest of the qualified field
LANE CHOICE DURING ELIMINATION’S:
This will be determined on the Poker Chips that each driver will choose prior to each round
STARTING SYSTEM: 4-Tenths Pro Tree
AUTO-START:
The Auto-Start System will be turned on with a 7-sec timeout
BYE-RUNS:
Each racer can only receive one “Bye-Run” during the pairings draw (This does not include if you draw a racer that is broke or can’t make the call to lanes) All vehicles must still take the tree during any single run
SCALES:
After each qualifying and elimination pass, all cars must stop and weigh at the track scales. If you lose in eliminations, and your opponent fails to make weight you will be reinstated into the eliminations only if you made minimum weight requirements. If both cars failed to make minimum weight, both cars will be disqualified. It is the driver’s responsibility to verify with each track scale, the weight of his/her car prior to each race day. There will 5lb error factor allowed.
Once Your Vehicle Passes Tech Inspection, There Are No Refunds
PAYOUTS:
MagnaFuel XDR Presented by Brandon McBride Mac Tools & Centerline Builders
$1,500.00 / To Win
$500.00 / Runner-up
$250.00 / Semi’s
Class Entry Fee: $75 (Plus $25 Weekend Track Tech Card Purchased at Racer Gate)
All rules subject to change at the sole discretion of the PSCA Technical Services Department.
2022 Champion Andrew Osborne
