OPEN WHEELDYNATECH ACCESSORIESAUGER STYLE MUFFLER • 11.000” long – fits inside 3.000” or 3.500” O.D. pipe. • Weighs only 1.000 lb. • 6-7 dB reduction.APPLICATION SIZE PART # PRICEAUGER STYLE MUFFLER 3.000” 776-24302 $19.99AUGER STYLE MUFFLER 3.500” 776-24352 $19.99SPLIT-FLOW RACING MUFFLERS®The Split-Flow racing muffler is the “hot topic” among racers, and for good reason. The straight-thru design can handle bigpower. The exclusive dual pattern core reduces dB levels while maintaining a powerful sound. The all-aluminized, fully weldedconstruction makes it a top choice for racing and high performance applications.• S traight-thru design for maximum flow. 7.000”• D ual-pattern core for reduced sound levels.• A ll-aluminized materials and welded construction. 5.000” 4.500”• S tainless steel sound absorbing material for no burnout.• Lightweight design.• Meets or exceeds dB requirements at most muffler-required sanctioned events.14.000” Weighs 7.200 lbs. OVAL (14.000”L X 7.000”W X 4.500”H DIA.) INLET I.D. OUTLET I.D. PART # PRICE 8-10 dB reduction SPLIT-FLOW OVAL 2.500” 2.500” 776-14252 $119.99 SPLIT-FLOW OVAL 3.000” 3.000” 776-14302 $119.99 SPLIT-FLOW OVAL 3.500” 3.500” 776-14352 $129.99 SPLIT-FLOW OVAL 4.000” 4.000” 776-14402 $129.99Weighs 3.800 lbs. 6.000”6-8 dB reduction ROUND (6.000”L X 5.000” DIA.) INLET I.D. OUTLET I.D. PART # PRICE SPLIT-FLOW ROUND $109.99 SPLIT-FLOW ROUND 3.000” 3.000” 776-06302 $109.99 3.500” 3.500” 776-06352SpeedwayMotors.com 800.979.0122 EXHAUST 51
OPEN WHEEL LINEAR-LINEAR VALVING • Reduced Low Speed Forces that promote driver feel.SHOCK TECH • Mid to High Speed to control bumps and ruts.SHOCK PISTON 101 DIGRESSIVE-DIGRESSIVE VALVING • More low speed control to stabilize car.AFCO’s engineering department • Modifieds use digressive valving on LR compression to slow downutilizes the “EMA” dyno todevelop new internal shock travel and maintain roll steer.components, evolve existing • Open Wheel cars utilize digressive valving on LR rebound onshock packages, and provenew technology. The EMA mid-exit to drive off corner.dyno also allows AFCO to • Pavement Late Models use digressive valving on front“play back” data collectedfrom the onboard data shocks with big bar/soft spring setups.acquisition system. This “playback” function allows the Engineering staff the ability to see the forces beingapplied to the shock in “Real Time” at any position on the race track. A low level view of how AFCO engineers compare on-track data acquisition with state of the art dyno equipment to create the perfect shocks for your race car.Low Shock Speeds High Shock Speeds PROGRESSIVE-PROGRESSIVE VALVING • Soft low to mid speeds to promote driver feel and chassis movement.Helps tune chassis dynamics Helps tune chassis dynamics through • High speed damping to control car over bumps. through the corner to bumps and ruts, tune quick transitions optimize driver feel. NOTE: Any AFCO shock can be made with any combination of these three on and off throttle, and tune quick types of valving. For example: Linear-Linear, Digressive-Linear, Progressive- transitions on and off brake. Digressive, etc.52 TUNING GUIDE Prices Subject to Change Without Notice
SPRINT CAR - TUNING GUIDE OPEN WHEELNON-WING SPRINTS SLICK TRACK • Left Front: 1675-3 / 1675-3S.SHOCK BASELINE INTERMEDIATE TRACK • Right Front: 1675-2 / 1675-2S. • Left Rear: 1693-7S or 1693-8S.HEAVY TRACK • Left Front: 1675-3/1675-3S. • Right Rear: 1694S.• Left Front: 1674-6/1674-6S. • Right Front: 1675-3/1675-3S.• Right Front: 1675/1675S. • Left Rear: 1693-8S.• Left Rear: 1693-9S. • Right Rear: 1695S.• Right Rear: 1695S.**Tuning Note: The amount of Left Rear tie-down may vary by the amount of stagger and driving style. The above shock valvings are baseline suggestions only. The most criticalshock to tune with on non-wing sprint cars is the left rear. WINGED SPRINTSSHOCK BASELINE INTERMEDIATE TRACK SLICK TRACKHEAVY TRACK • Left Front: 1675/1675S. • Left Front: 1674/1674S.• Left Front: 1674-6/1674-6S. • Right Front: 1675/1675S. • Right Front: 1675-2/1675-2S.• Right Front: 1675/1675S. • Left Rear: 1694-8S. • Left Rear: 1693-8S.• Left Rear: 1694-8S. • Right Rear: 1694-5S. • Right Rear: 1694S.• Right Rear: 1695S. **Tuning Note: Be cautious of using easy-up front shocks in slick conditions on winged sprint cars. The combination of a rearward mounted wing and easy-up front shocks canreduce front grip to the point of causing an extreme push condition.QUARTER MIDGET - TUNING GUIDESHOCK ADJUSTMENTSUNDERSTEER TO CORRECT A FRONT END PUSH CONDITION.TIGHT ON CORNER ENTRY TIGHT IN MIDDLE OF CORNER TIGHT ON CORNER EXIT• Increase rebound in LR shock. • Increase compression in RR shock. • Reduce rebound in LR shock.• Increase compression in RR shock. • Increase rebound in front shocks. • Increase compression in RR shock.• Increase rebound in front shocks. • Reduce compression in front shocks. • Increase rebound in front shocks.• Reduce compression in front shocks. • Increase pressure in RR shock. • Increase pressure in RR shock.OVERSTEER TO CORRECT A LOOSE REAR END CONDITION.HEAVY TRACK INTERMEDIATE TRACK SLICK TRACK• Increase compression in front shocks.• Reduce rebound in LR shock. • Increase compression in front shocks. • Reduce compression in RR shock.• Reduce rebound in LF shock. • Reduce compression in RR shock. • Increase rebound in LR shock.• Reduce compression in RR shock. • Reduce rebound in LF shock. • Reduce rebound in front shocks.• Reduce pressure in rear shocks. • Reduce rebound in RF shock. • Reduce pTreUssuNre iInNRRGshocGk. U I D E • Reduce pressure in rear shocks.SpeedwayMotors.com 800.979.0122 TUNING GUIDE 53
OPEN WHEEL = Pantone 7461 C www.DynatechHeaders.com17CSI THROWBACK$ 99 29CSI AMERICAN$ 99 15CSI AMERICAN$ 99T-SHIRT HOODIE T-SHIRT28400 18300 2830054 APPAREL Prices Subject to Change Without Notice
APPAREL AND MOREVisit www.AFCOPERFORMANCEGROUP.com to view all of our brands and download or request our catalogs!AFCO Oval Track AFCO Drag, Muscle, Street Rod, AFCO/PRO Asphalt Oval Track Dynatech Headers High PerformancePRO Shocks Longacre Racing Products DeWitts Radiator Competition SuspensionVisit us today to order a complete car and purchase parts for all your quarter midget needs!SpeedwayMotors.com 800.979.0122 APPAREL 55
DISTRIBUTED BY340 Victory LaneLincoln, NE 68528 800.979.0122 AFCO TECH LINE 800.632.2320 SpeedwayMotors.com
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