2010 DODGE VIPER suspension

WARNING!
The Pilot Sport Cup tires were NOT intended to be driven on snow or ice. The Pilot
Sport Cup is a summer season tire and has diminished capability on cold road
surfaces (below 50°F). DO NOT OPERATE THE VEHICLE DURING THESE CONDITIONS.
Snow, ice and cold road surfaces can cause a loss of control or accident.
ADJUSTABLE DAMPERS
• The Viper ACR suspension includes a set of adjustable coil-over racing dampers built
by KW Suspensions. These dampers hav e been tuned by SRT handling engineers to
provide the maximum handling performance without sacrificing reasonable road
manners.
• The two-way adjustable dampers inc lude adjustments for compression (bump) and
rebound damping.
NOTE: Keep your damper settings at the street positions when operating your vehicle on
the street.
WARNING!
Only experienced track drivers should ma ke adjustments to the suspension settings.
Improper suspension adjustment can disrupt the balance of the vehicle and lead to a
loss of control or accident.
CAUTION!
Do not make any adjustments or modifications to the nitrogen pressure of the damper
canisters. This will void the warranty.
• The ACR suspension was designed and tuned with an uncompromising focus on handling. The ride response to road conditions m ay be harsher than expected from a
typical sports car.
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PERFORMANCE/ACR

Damper Components
Components
1. Spherical Bearing Mount
2. Rebound Adjuster
3. Upper Spring Seat
4. Primary Spring
5. Helper Spring
6. Lower Spring Seat
7. Compression Adjuster
8. Threaded Main Body
9. Reservoir
10. Spanner Wrench
11. Spring Seat Hex Wrench
• Your Viper ACR is delivered with the suspension adjusted for optimal street comfort. Below are the adjustment capabilities:
Compression Damping: 14 settings front and rear
Rebound Damping: 19 settings front and rear
Ride Height: +/- 1
14in. (32 mm)
• Any adjustments to the suspension settings should be made in small increments.
CAUTION!
The use of improper tools may severely damage your suspension. The tools included
with your Viper ACR are the only tools that should be used for adjusting the ride
height.
Ride Height Adjustment
• Your ACR is delivered from the factory at a ride height that provides a good balance for
drivability on the street. The adjustable suspension allows for ride height adjustment.
As with all of the suspension adjus tments, caution should be used when changing the
ride height.
• Before any adjustments are made to your ride height, clean threaded area with soapy
water to be sure it is free and clear of debris.
CAUTION!
Only the factory ride heights should be used while operating the vehicle on the street.
Low ride heights can cause damage to the vehicle.
PERFORMANCE/ACR
38

Adjusting the ride height:
• Raise and support the vehicle. Both left andright side wheels should be lifted off the
ground to allow adjustment of the spring
seats without damage. Never make ride
height adjustments with the suspension
loaded. The helper spring should never be
fully compressed while adjusting ride
heights.
• Remove the wheel and tire assembly.
• Loosen the set screw on the lower spring seat (approx 1 turn).
• To lower the ride height, use the spanner wrench and rotate the lower spring seat counter-clockwise (as viewed fr om below the damper). Use the set screw as a
reference to return to street height.
• To raise the ride height, first turn the seat in the counter-clockwise direction and ensure the threads are clear of debris. Use the spanner wrench and reverse the
direction.
• Tighten the set screw to 22 in-lbs (2.5 N·m). DO NOT over tighten this screw.
• The ride height adjustment sensitivity is as follows: • Front: One turn = 0.104 in. (2.6 mm) height change at frame
• Rear: One turn = 0.134 in. (3.4 mm) height change at frame
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PERFORMANCE/ACR

Smooth track set up:
Front: 4 in. (102 mm)
Rear: 5 3/8 in. (136 mm)
Rough track set up:
Front: 4.375 in. (111 mm)
Rear: 5 1/2 in. (140 mm)
• The rake of the car (or front to rear ride height difference) may also be changed with your ACR suspension. Changing the rake may be beneficial at some tracks. Use
caution when changing the rake angle.
CAUTION!
Depending on your set up, driving styl e, and track condition, some tire to wheel liner
contact may occur. To avoid excessive wheel liner wear, adjust your ride height
accordingly.
Notes on Tuning
Damper Adjustment
• Adjusting from the street settings should be done only at track events. A
recommended starting position for the tracks is:
Front Compression Position “6”
Front Rebound Position “6”
Rear Compression Position “5”
Rear Rebound Position “5”
• Always start from a known position (full stiff).
• Adjust in small increments (1-2 clicks).
• Record your adjustment settings at all four wheels.
• Continually monitor and record your tire pressures.
• Remember that suspension damping, ride heights, rake angle and aerodynamic
balance all work as a system. As you make changes to one end of the vehicle, it will
affect the balance of the car.
Maintenance and Inspection
• Regularly inspect the splitter rub strips and out board knock-in nut. Regularly inspect
all attachments of the aerodynamic components (see Aerodynamics section).
• Track use will greatly increase wear rates and service intervals on your Viper ACR. Repeated track use requires more frequent fluid changes.
NOTE: Although your vehicle is shipped with 0W40, it is recommended to use Mobil-1
15W50 synthetic motor oil at the track.
• Always run a cool down lap at the end of a track outing. For track outings lasting longer than 25 minutes, an external rear axle cooler is recommended.
PERFORMANCE/ACR
42

LIMITED WARRANTY
• The ACR offers many race-ready components that are designed for uncompromising
performance. Because of this, some of the ACR components have unique warranty
limitations.
Racing Not Covered
• The warranty does not cover the cost of repairing damage or conditions caused by racing, nor does it cover the repair for any defects that are found as the result of
participating in a racing event. The term racing includes but is not exclusive to: wheel
to wheel competition, timed competitive events, autocross or other off-road track
events.
Splitter
• The splitter is not covered for wear on the rub strips or damage due to contact with parking blocks, speed bumps, curbs, s loped tarmac, etc. The warranty is not valid if
adjustments or modifications are made to the splitter.
Wing
• The warranty does not cover any adjustments or modifications made to the wing or if the original fasteners or positions have been changed.
Tires
• 12 months / 12,000 miles - Excessive tire wear due to track events, autocross,competition, etc. are not covered.
Brake Pads/Rotors
• 12 months / 12,000 miles - Excessive brake pad and rotor wear due to track events,autocross, competition, etc. are not covered. No warranty for noise complaints.
Adjustable Coil-over Shocks
• The factory warranty is 12 months / 12,000 miles. KW Suspensions has an extendedsupplier warranty up to 36 months or 36,000 miles. The warranty is not valid if
modifications or improper adjustments are made to the factory settings.
KW automotive North America Inc.
1075 North Avenue
Sanger, CA 93657
Toll Free: 1-888-713-5566
Email: [email protected]
http://www.kw-suspension.com/en/
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PERFORMANCE/ACR

MAINTENANCE CHART B
Miles:
3,000 6,000 9,000 12,000 15,000 18,000 21,000 24,000 27,000 30,000 33,000 36,000 39,000
Or Months: 3 6 9 12 15 18 21 24 27 30 33 36 39
Or Kilometers:
5,000 10,000 15,000 20,000 25,000 30,000 35,000 40,000 45,000 50,000 55,000 60,000 65,000
Change the engine oil and engine oil filter. XXXXXXXXXXXXX
Rotate the tires. X X X X X X
Inspect and replace the engine air cleaner filter, if
necessary. XX
Inspect the tran smissionfluid. X X X
Inspect the brake linings. X X X
Change the rear axle fluid. X X X
Change the brake fluid. X X
Lubricate the front and rear suspension ball joints. X X
Change the transmission fluid. X
Inspect and replace the PCV valve, if necessary. X
Change the brake and clutch fluid. X• Refer to the Owner's Manual on the DVD for the complete maintenance schedule and maintenance schedule "A" if you are not
driving under any of the severe duty conditions shown for schedule B.
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MAINTAINING YOUR VEHICLE