One of the famous car adjustments done nowadays by most car owners is lowering it.
Most people prefer lowering their vehicle to boost the vehicle’s visual appeal and increase the handling performance that the vehicle can provide.
While there are many methods you can use to lower your vehicle’ suspension, there are two most common ways you can use to do the task successfully: using a replacement spring kit if your car has a coil spring suspension and making use of a lowering kit with blocks, if your car has a leaf spring suspension.
Here is the procedure:
Lowering the Coil Spring Suspension
What You’ll Need
- Air impact gun
- Air compressor
- Jack and the stands
- A full set of hand tools
- Tire chocks or wood blocks
- strut spring compressor
- Socket set
- New lowering springs
Step 1: Raise The Front Part of Your Car
Start by raising your car’s front part off the ground then carefully secure it on the jack stands. After that, place the tire chocks or the wood blocks on the rear wheels then position the parking brake properly to prevent your car from falling.
Step 2: Take Off All the Lug Nuts
Immediately you are dome with raising your vehicle, use the impact gun with an appropriate socket size to take off the lug nuts. After you finish removing the lug nuts, take off the car wheels.
Step 3: Remove The Front Strut Assembly
You can easily do this by removing the bolts that hold it at the bottom and top using a ratchet or wrenches with appropriate sockets.
Sometimes the right strut designs differ from car to car, most car struts are held securely by three bolts on top and two bolts at the bottom. You can access the three upper bolts through opening the hood then remove them through loosening them from the upper side.
Immediately you are done with removing all the bolts, pull the whole strut assembly free.
Step 4: Compress the Strut Spring
Once you finish removing the strut assembly, take the strut spring compressor then compress the spring to eliminate all tension between the upper strut mount and the spring.
It’s vital to compress the spring continuously in small increments as you interchange it between both sides. Make sure all tension is relieved to safely remove the upper strut mount.
Step 5: Take Off the Compressed Coil Spring
Once you’ve adequately compressed the coil spring, make sure you turn on the compressed air. Pick your impact gun with the right size of the socket then remove the upper nut that holds the strut mount on the assembly.
After removing the upper nut, pull the upper strut mount then remove the compressed coil spring from the assembly.
Step 6: Fix New Coil Spring on the Strut Assembly
Most lowering springs are designed to sit on the strut perch in a specific design. Therefore, ensure you seat the spring appropriately while installing it on your strut assembly. Please make sure you replace the rubber spring seats when they are part of the kit.
Step 7: Install Again the Top Strut Mount
You have to compress the spring once more depending on how low the new springs are before you reinstall the nut. Just compress the spring until you can freely install the nut properly. After that, twist it for a few threads then make it tight using the air impact gun.
Step 8: Place the Strut Assembly on Your Car
Immediately you finish reassembling the strut assembly using the new lowering spring, place the strut assembly back to your car.
It’s very easy to place one of the lower bolts inside first to give support to the strut then fix the remaining bolts once you finish securing the strut to the car.
Step 9: Lower the Other Side of the Car
After you have reinstalled the strut on the car, fix back the wheel then torque the lug bolts down. Then go ahead with lowering the other side through doing the same process on the other side of the car’s strut assembly.
Step 10: Then Change the Back Coil Springs
After replacing the front springs, move on and replace the back coil springs following the same method.
Use a Universal Lowering Kit to Lower the Leaf Spring Suspension
- Tire chocks or wood blocks
- Universal lowering blocks kit
- Jack and the stands
- A set of hand tools
- Raise Your Car
Start by rising your car then place a jack stand beneath the frame, close to the part of your vehicle where you will start with. In addition to that, position the tire chocks or the wooden blocks beneath any of the parts of your car where you’ll be working on, to prevent your car from falling.
- Take Off The Bolts That Hold The Suspension Spring.
Immediately after the car is raised, look for the two U-bolts found on the suspension leaf springs. These bolts are long with a U shape with threads at the end parts. Take away the U-bolts using the appropriate tools (mostly an appropriate socket and a ratchet).
- Raise The Axle
After removing both U-bolts, pick the car jack then position it beneath the axle close to the area that you are working on then move ahead to raise the axle.
Continue raising the axle until you create enough room that you’ll use to lower the block to fit between the leaf springs and the axle. For instance, when it’s a 2-inch lowering block, then you must raise the axle until you create a 2-inch gap between the spring and the axle to create an adequate room for the block.
- Now Fix The New U-Bolts
After fixing the lowering block, pick the new long U-bolts on your lowering kit then fix them over the axle. They will be a bit longer to balance the additional space that was consumed by lowering the block.
Check again to be sure that everything is correctly lined up. After that, fix back the nuts on the U-joints then torque them properly.
- Perform The Same Steps on The Other Side
Finally, you’ve lowered one of the vehicle’s side. Return the tire, then lower the car, then take off the jack stand. Do the same thing on the opposite side then lower the rear suspensions too.
Lowering a car will not only boost the visual appeal of your car but will add its performance benefits too if you carry out the process properly.
How to Lower a Car Jack
- Jack the car up then perform a visual inspection. Carefully look at whether the jack is placed at the center of the rear axle. In case it’s not, then position it to the right position to get rid of eventual damage to the vehicle. Ensure it’s located along the hydraulic locking area. After that jack the car up to approximately 2 inches. After you’ve attained the desired height, look for objects such as jack stands that can damage the car when it’s jacked down.
- Once you stabilize its position and raise the vehicle’s rear part as necessary, take away the jack stands then snap them off carefully. After that, place them away to prevent stucking beneath your car.
- Next, lower the vehicle through lowering the handle of the jack. Apply strong and slow pressure and make sure you don’t release pressure. Keep on jacking down carefully and slowly. Lowering it too fast can damage the jack valve below, and the car can end up bouncing off. Also, please don’t, jack it too slow as this will stress your arms and hands.
- Immediately you have lowered the car down to its secure position, carefully snap off then open the valve.
- After you’ve released the safety valve, continue jacking down to allow it to touch the jack. Once again, jack it down to make it touch the cradle of your car. This time, do it more slowly and carefully to allow it to snap from your hold. Your car is finally slowly lowered down to the ground.