2
9919-247 Rev. 12302015
Installation
NOTE:
QA1 struts are right and left hand specific. The part number on the closure nut (near the piston rod) will indicate L or
R. When assembled correctly the knobs should point towards the front of the vehicle.
1.
Some 3rd Generation F-Body spindles require grinding the ridge just below where the strut mounts to the spindle for
the QA1 strut. Mark the area on the spindle at the bottom of the strut where it makes contact with the spindle.
Carefully use a grinder to remove enough material on the spindle to allow the strut to line up with the holes in spindle.
Note: Do not grind material away from the strut assembly itself
.
2.
Slide the upper threaded end of the strut shaft up into the caster/camber plate and loosely install the factory nut.
3.
Install the two spindle mounting bolts and nuts. Torque to 195 lb. ft.
4. Re-install the brake line bracket to the QA1 strut.
5.
Reinstall the wheel. Torque all nuts and bolts to factory specifications.
6.
Torque the upper strut mount attachment nut to 50 lb. ft.
7. Repeat the entire removal and installation procedures for the other side.
Note: It is a good idea to have the car professionally aligned after making any suspension changes.
Front Strut Valving Adjustments
QA1 shocks have 18 damping settings per knob. There are 6 clicks per revolution of each knob, and each knob has 3 complete
revolutions. The knob set fully counter clockwise is the softest setting - start your adjustments from that point. Recommended base
settings to begin testing with are as follows:
Struts with one adjuster knob:
Drag Racing:
0-6 clicks
Other Applications:
2-8 clicks for nice ride and handling;
8-12 clicks for firm ride and improved handling;
13+ clicks for more aggressive handling
Struts with two adjuster knobs:
Drag Racing:
12-16 clicks compression, 0-6 clicks rebound
Other Applications:
2-6 clicks compression, 2-8 rebound for nice ride and handling
8-12 clicks compression, 8-12 rebound firm ride & improved handling
12-16 clicks compression, 13+ clicks rebound more aggressive handling
