DIY Guide to Installing Scorpion Racing Rocker Arms: Step-by-Step Instructions

DIY Guide: Installing Scorpion Racing Rocker Arms

Installing new rocker arms is one of the best ways to enhance your engine’s performance, improving airflow and efficiency. Whether you're upgrading for better horsepower or replacing worn-out parts, Scorpion Racing Products' rocker arms are designed for precision and durability, making them an excellent choice for any build.

In this DIY guide, we’ll walk you through the step-by-step process of installing Scorpion rocker arms, complete with pro tips to ensure a smooth and successful installation.

 

 

Tools and Materials You’ll Need

Before diving into the installation, gather the following tools and materials:

  • Socket set and ratchet

  • Torque wrench

  • Feeler gauge

  • Screwdriver set

  • Assembly lubricant

  • Shop towels

  • Valve cover gasket (if needed for replacement)

 

 

Step 1: Prepare Your Workspace

Proper preparation ensures a smoother installation process and helps prevent errors. Follow these initial steps:

  1. Ensure Safety: Disconnect the battery to avoid accidental starts.

  2. Cool Down the Engine: Make sure the engine is cool to the touch to avoid burns and ensure accurate measurements.

  3. Remove the Valve Covers: Using your socket set, carefully remove the valve covers to access the rocker arms. Keep track of all bolts and fasteners.

 

 

Step 2: Remove the Old Rocker Arms

  1. Loosen the Rocker Arm Bolts: Gradually loosen the bolts securing each rocker arm. Use a crisscross pattern to evenly relieve tension and prevent damage to the components.

  2. Inspect the Old Rocker Arms: Check for signs of wear, cracks, or pitting. Compare these with your new Scorpion rocker arms to appreciate the upgrade in quality and design.

  3. Clean the Area: Use a shop towel to clean the pushrods, valve stems, and rocker arm mounting points, ensuring there’s no debris or oil buildup.

 

 

Step 3: Install the Scorpion Racing Rocker Arms

1. Align the Pushrods

  • Ensure the pushrods are properly seated in the lifters and valve stems. Misalignment can lead to poor performance or component damage.

2. Apply Assembly Lubricant

  • Coat the contact points of the rocker arms and pushrods with assembly lubricant. This reduces wear during the initial startup and ensures smoother operation.

3. Position the Rocker Arms

  • Place each rocker arm onto the mounting stud or shaft, ensuring proper alignment with the pushrod and valve stem.

 

 

Step 4: Adjust the Rocker Arm Preload

Proper preload is critical for valve timing and performance. Follow these steps for adjustment:

  1. Rotate the Engine: Use a wrench to rotate the crankshaft, positioning the camshaft at the base circle of the lobe for the cylinder you’re working on.

  2. Tighten the Rocker Arm Bolts: Tighten the bolts until there is zero lash (no vertical play in the pushrod). Use a feeler gauge if necessary to check the gap.

  3. Set Preload: Once zero lash is achieved, tighten the bolt an additional ½ to ¾ turn, depending on your engine’s specifications.

Pro Tip: Refer to your engine manual or consult Scorpion Racing Products for exact preload specifications.

 

 

Step 5: Torque the Bolts to Specification

Using a torque wrench, tighten each rocker arm bolt to the manufacturer’s recommended torque setting. Scorpion’s products are designed for precision and durability, but proper torque ensures consistent performance and prevents over-tightening.

 

 

Step 6: Double-Check Alignment

Before moving to the next step:

  • Ensure the pushrods are seated correctly.

  • Verify that the rocker arms are centered over the valve stems.

  • Rotate the crankshaft to ensure smooth, unobstructed motion.

 

 

Step 7: Reassemble the Engine

  1. Replace the Valve Covers: Install the valve covers and gaskets, ensuring a tight seal to prevent leaks.

  2. Reconnect the Battery: Reattach the battery cables.

  3. Start the Engine: Start the engine and let it idle. Listen for unusual noises, such as ticking or clattering, which may indicate incorrect preload or alignment.

 

 

Pro Tips for a Successful Installation

  • Use High-Quality Components: Pair your Scorpion rocker arms with compatible pushrods and valve springs for optimal performance.

  • Work Methodically: Install and adjust one cylinder at a time to avoid confusion or missed steps.

  • Follow Manufacturer Guidelines: Always refer to Scorpion Racing Products’ documentation and your engine manual for precise specifications.

 

 

Why Choose Scorpion Racing Rocker Arms?

Scorpion Racing Products’ rocker arms are engineered for superior performance and reliability. Here’s why they’re the perfect choice for your engine:

  • Made in the USA: Crafted with pride and precision to ensure durability.

  • CNC-Machined Excellence: Tight tolerances and consistent quality.

  • Wide Compatibility: Designed for a variety of applications, from street builds to professional racing.

 

 

Final Thoughts

Installing Scorpion rocker arms is a straightforward project that can significantly enhance your engine’s performance. By following this guide and taking the time to align, adjust, and torque everything properly, you’ll ensure a successful installation and long-lasting results.

Ready to take your engine to the next level? Check out Scorpion Racing Products for premium rocker arms and other high-performance valvetrain components.