Do I Need A Tail Shaft Spacer?

Introduction

A tailshaft spacer is an important component of many driveshaft systems. It is used to adjust the length of the driveshaft to ensure proper alignment and performance. However, whether you need a tailshaft spacer or not depends on several factors. In this article, we will discuss what a tailshaft spacer is, what it does, and when you might need one.

What is a Tailshaft Spacer?

A tailshaft spacer is a thin metal ring that is placed between the transmission and the driveshaft. Its purpose is to adjust the length of the driveshaft by adding or subtracting a small amount of space between the transmission output shaft and the universal joint yoke. This can help to align the driveshaft with the rear differential, which can improve performance and reduce vibration.

Tailshaft spacers come in different sizes and thicknesses, and they are made from various materials, including aluminum, steel, and brass. They are typically installed when a driveshaft is too short or too long for a particular vehicle, and the length cannot be adjusted by using a different yoke or u-joint.

What Does a Tailshaft Spacer Do?

A tailshaft spacer serves several purposes in a driveshaft system. Here are a few of the most important:

1. Adjusts the Length of the Driveshaft
As we mentioned earlier, a tailshaft spacer allows you to adjust the length of the driveshaft to ensure proper alignment with the differential. This can help to reduce vibration and noise, and improve overall performance.

2. Provides Added Clearance
In some cases, a tailshaft spacer can provide added clearance between the transmission output shaft and the driveshaft. This can be helpful if you are using a larger u-joint or yoke, or if your vehicle has a suspension lift or other modifications that alter the driveshaft angle.

3. Allows for Proper Torque Transmission
By ensuring proper alignment between the transmission, driveshaft, and differential, a tailshaft spacer can help to transmit torque more efficiently. This can improve acceleration, towing performance, and overall drivability.

When Might You Need a Tailshaft Spacer?

Whether you need a tailshaft spacer or not depends on several factors, including the type of vehicle you have, the size and shape of your driveshaft, and the angle of your transmission and rear differential.

Here are a few situations where you might need a tailshaft spacer:

1. Vehicle Lifted or Lowered
If you have lifted or lowered your vehicle, the driveshaft angle may have changed, which can affect the length of the driveshaft. In some cases, you may need a tailshaft spacer to adjust for this change.

2. Different Transmission or Rear End
If you have installed a different transmission or rear end in your vehicle, it may require a different length or size of driveshaft. A tailshaft spacer can help to adjust for these changes.

3. Modified Vehicle
If you have made other modifications to your vehicle, such as installing a larger u-joint or yoke, or making changes to the suspension, you may need a tailshaft spacer to ensure proper alignment and clearance.

How to Install a Tailshaft Spacer

Installing a tailshaft spacer is a relatively simple process, but it does require some mechanical knowledge and experience. Here are the basic steps:

1. Remove the driveshaft
Before you can install a tailshaft spacer, you will need to remove the driveshaft from your vehicle. This involves removing any bolts, clips, or other fasteners that hold the driveshaft in place, and carefully sliding it out of the transmission and rear differential.

2. Install the Spacer
Once you have removed the driveshaft, you can install the tailshaft spacer. Simply slide it onto the transmission output shaft, making sure it is centered and flush with the output shaft.

3. Reinstall the Driveshaft
With the tailshaft spacer in place, you can now re-install the driveshaft. Make sure it is properly aligned with the rear differential and transmission, and tighten any bolts or fasteners securely.

4. Check for Proper Alignment
After installing a tailshaft spacer, it is important to check for proper alignment and clearance. Start your vehicle and inspect the driveshaft and u-joints for any signs of vibration or noise. If everything looks and sounds smooth, you should be good to go.

Conclusion

In summary, a tailshaft spacer is an important component of many driveshaft systems. It allows you to adjust the length of the driveshaft to ensure proper alignment and performance. Whether you need a tailshaft spacer or not depends on several factors, including the type of vehicle you have, the size and shape of your driveshaft, and the angle of your transmission and rear differential. If you do need a tailshaft spacer, it is a relatively simple process to install, but it does require some mechanical knowledge and experience.