Factory Five Racing Mk3 Roadster, Assembly Manual

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20. Suspension height adjustments are done in the rear by turning the spring from its normal position on
the mount to a position higher or lower. Remember that the spring is located halfway to the arm
mount, so any height changes at the spring will be multiplied by roughly two at the axle.
21. Attach the rear vertical shocks at the top through the holes in the plates located in the trunk area using
the Mustang rubber bushings and fasteners.
Torque to 37-47Nm (27 lbft) .
22. Mount the quad shocks and their brackets to the rectangular frame plate shown in the picture.
23. Attach the rear end axle straps (included with the kit). These cables will prevent drive shaft binding if
you happen to achieve airborne status. The rear end straps bolt to the front bolt of the quad shock up
high, and the inboard side of the vertical shock down low.
Bolting the rear horizontal quad shock to the frame w/ axle straps.
24.
Put the wheels and tires on the suspension and lower the chassis to the correct ride height.
Ride height should be 4½” at the front and 4½” at the back measured to the bottom of the 4” round tube.
This will also have to be done after the car is finished. This is just a rough setting for now.
25.
Tighten upper and lower control arms to the correct torque specification, shown on the following
chart. This is done so that the bushings are not pre-loaded which will affect handling and ride quality.
26. The rear end is attached to the Factory Five Racing frame at the shocks, springs, and control arms
(upper and lower). Checking the tightness of the bolts on the rear control arms should be done with
your car’s regular maintenance.
27. Using the rear sway bar is not recommended. The bar can be installed on the factory mounts for auto-
crossing or depending on your driving style.
ATTENTION: Torque the nut if possible. Only torque the head of the bolt if the nut is inaccessible. See
Appendix F for a general bolt Torque chart.
Suspension Torque Specs Chart