Ridetech 11016509 - Manual

350 S. St. Charles St. Jasper, In. 47546
Ph. 812.482.2932 Fax 812.634.6632
www.ridetech.com
Part # 11016509
55-57 Chevy RQ Series Rear CoilOvers
For Use w/ AirBar
Shock Assembly:
2 24049999 4.1” stroke RQ Series shock
2 90002021 1.7” eyelet – Non adjustable
4 90001994 .625” I.D. bearing
8 90001995 Bearing snap ring
Components:
2 59100200 Coil spring – 10” long / 200 # rate
2 90002222 Spring retainer kit (do not use upper spring retainer)
2 90002070 ¾” drop upper spring retainer
4 90002043 Aluminum spacer for upper bearing
4 70010828 Delrin Spring Washer
Ride Height
We have designed most cars to have a ride height of about 2” lower than factory. To achieve the best ride
quality & handling, the shock absorber needs to be at 40-60% overall travel when the car is at ride height. This
will ensure that the shock will not bottom out or top out over even the largest bumps. Measuring the shock can
be difficult, especially on some front suspensions. Measuring overall wheel travel is just as effective and can
be much easier. Most cars will have 4-6” of overall wheel travel. One easy way to determine where you are
at in wheel travel is to take a measurement from the fender lip (center of the wheel) to the ground. Then lift
the car by the frame until the wheel is just touching the ground, re-measure. This will indicate how far you are
from full extension of the shock. A minimum of 1.5” of extension travel (at the wheel) is needed to ensure that
the shock does not top out. If you are more than 3” from full extension of the shock then you are in danger of
bottoming out the shock absorber.
Adjusting Spring Height
When assembling the CoilOver, screw the spring retainer tight up to the spring (0 preload). After entire
weight of car is on the wheels, jounce the suspension and roll the car forward and backward to alleviate
suspension bind.
•
If the car is too high w/ 0 preload then a smaller rate spring is required. Although threading the spring
retainer down would lower the car, this could allow the spring to fall out of its seat when lifting the car by
the frame.
•
If the car is too low w/ 0 preload, then preload can then be added by threading the spring retainer up to
achieve ride height. On 2.6” - 4” stroke shocks, up to 1.5” of preload is acceptable. On 5-7” stroke
shocks, up to 2.5” of preload is acceptable. If more preload is needed to achieve ride height a stiffer
spring rate is required. Too much preload may lead to coil bind, causing ride quality to suffer.