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Front Suspension

The next logical step in the transformation of our '88 project car was to go through the front suspension components - namely the springs, struts, and control arms. We desired a lower stance for improved looks, but also for the advantages in stability as a result of the lower center of gravity. Because lowering of the front end requires removal of the struts and springs, it made good sense to install all the available polyurethane components at the same time.


Shown are all the components we planned to replace on our '88 Mustang's front suspension. Polyurethane is used for coil spring isolators, strut bushings, and control arm bushings.
 
Disassembly of the front suspension is not difficult, but does require proper sequence and method. Refer to our article How to Lower your Mustang in the Tech Department for detailed instructions.
     

The Hyper Flex kit comes with a complete set of polyurethane coil spring isolators. From left to right are; front spring lower and upper isolators, followed by rear spring upper and lower isolators.
 
Shown is how the tubular isolator fits on the "pig tail" end of the front coil spring. At right is a stock spring and rubber isolator. The polyurethane will resist deformation and deterioration under compression, and will maintain consistant ride height.
     

Perhaps the most difficult bushings to replace in the entire kit are those for the front control arm. This is due to the fact that the control arms must be removed from the car in order to press the new bushings in. We found it best to do this at the same time new springs or spring isolaters are installed.
 
A good machine shop can press out the stock bushings and sleeves without much hassle. It is advisable to use shims or support between the "U" channel in the control arm to prevent deformation under load from the press.
     

The new bushings and sleeves are pressed into place. The result is a control arm that is able to prevent alignment loss under hard cornering. This is a very common problem due to deflection of the stock rubber bushing and sleeve.
 
The final bushings in the front suspension setup are the strut bushings. The lower bushings slip over the top of the strut, while the upper bushings (shown) replaces the stock piece in the caster/camber plate assembly. The end result is resistance to momentary change in alignment when the front wheels encounter rough road conditions.


 
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