Quick Tech: Three Questions With Hyperco Springs

We get a ton (a metric ton to be exact) of questions about chassis setup. Fortunately, we have some strong relationships in the racing community that are very experienced in these topics. We reached out to Hyperco Springs to get three of the typical questions they receive, and their responses. Without further hesitation, here is what we found out:

Question: Is there a way to avoid having to unload suspension coils during transportation?

Answer: Whether or not it is necessary to unload the coils in the pit, or block the car while it is being transported depends upon the type of suspension coils you use. If you purchase high-quality springs with the correct length and are also designed for the rigors of professional racing conditions you should not need to jack up the car. You must also ensure that the spring is not being slammed or hammered coil bound. This could happen if the car becomes airborne, and bounces one corner or hits a curb.

High-performance springs, such as those which we manufacture, will save you time and will not take set. In addition, they will provide you a performance advantage during the race itself.

Question: What is the best way to use portable checkers?

Answer: Hyperco does not know of any portable checker that can measure rate with repeatable results. Portable checkers are adequate for general testing, and for comparing springs of 1000 lb. rate or less. When using portable checking equipment, follow these tips and it will help you get more reliable results.

1. Use calibration springs and keep them for reference.

2. Use a strong, sturdy frame for your equipment – one that will not bow or flex.

3. Make sure the top and bottom plates are parallel.

4. Inspect the checking equipment for leaks.

5. Use a consistent set of operating procedures like; Orient the springs the same way each time, and compress the springs to the pre-load.

Question: How do you install Hyperco leaf springs on a Camaro or Chrysler car?

Answer: Remove shackles and axle center mount mounting brackets. Remount brackets to desired new spring position while keeping them aligned and parallel in relationship with the spring (This will eliminate binding and maintain true alignment between spring, bolts, and mounting brackets).

Install Mono Spring. Check alignment (The inner sleeves should not bind inside the spring bushings on both front and rear mounting points).

Bolt spring to axle center mounting plate with poly mounting pad extending 1/4” beyond the edge of the steel mounting plate.

U-bolts should be tightened to 65 ft-lbs. or to the yield of the center mount plate. U-bolts should never come in contact with the spring. It is recommended a heavy gauge rubber or plastic hose be fitted over the U-bolts to ensure there is no metal to composite contact. Take care not to twist spring during this final step. CAUTION: Torque values may vary depending on the hardware used. (Hyperco recommends the use of a lateral control/limiting device or similar device to control/limit the amount of lateral axle movement).

Pro Tip: After removing shackles and axle mount plate, assemble them to the Composite Mono spring to keep a precise assembly alignment relationship. Then tack weld the assembly to your new mounting position (Always shield springs from welding or exhaust pipes high temperature. This procedure will assure a successful custom-fitted installation.).

Article Sources

About the author

Bobby Kimbrough

Bobby grew up in the heart of Illinois, becoming an avid dirt track race fan which has developed into a life long passion. Taking a break from the Midwest dirt tracks to fight evil doers in the world, he completed a full 21 year career in the Marine Corps.
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