B20/B18 Non Vtec Cylinder Head Install DIY How To | Valve Adjustment, Set Cam Timing, Torque Specs

Introduction

This tutorial provides a comprehensive guide on how to install a B20/B18 non-VTEC cylinder head, including important steps like valve adjustment, cam timing, and torque specifications. Whether you're a seasoned mechanic or a DIY enthusiast, this guide will walk you through the process to ensure a smooth installation.

Step 1: Gather Necessary Tools and Materials

Before starting the installation, ensure you have all the tools and materials required for the job.

Tools Needed

• Torque wrench
• Socket set
• Screwdrivers
• Gasket scraper
• Engine assembly lubricant
• Valve adjustment tool

Materials Required

• ARP Head Stud Kit
• Supertech MLS Headgasket
• Valve stem seals
• Engine oil

Step 2: Prepare the Cylinder Head

Preparation is crucial for a successful install.

• Clean the Cylinder Head and Engine Block:

  • Remove any old gasket material using a gasket scraper.
  • Ensure the surfaces are smooth and free from debris.

• Inspect the Cylinder Head:

  • Check for warping or cracks. If any issues are found, consider resurfacing or replacing the head.

Step 3: Install the Head Gasket

Installing the head gasket correctly is vital for preventing leaks.

• Position the Head Gasket:
  • Place the Supertech MLS head gasket onto the engine block, ensuring it is aligned with the dowel pins.

Step 4: Install the Cylinder Head

Carefully place the cylinder head onto the engine block.

• Align the Head:

  • Make sure the head sits evenly on the gasket.

• Insert Head Studs:

  • Use the ARP head stud kit to secure the cylinder head in place.

Step 5: Torque the Head Studs

Proper torqueing is essential for engine integrity.

• Follow the Torque Sequence:

  • Use the recommended torque sequence from the ARP kit instructions.

• Torque Specifications:

  • Typically, a three-step torque process is recommended:
    1. Initial torque to 30 ft-lbs.
    2. Second torque to 60 ft-lbs.
    3. Final torque to 85 ft-lbs.

• Use a Torque Wrench:

  • Ensure accuracy and prevent overtightening.

Step 6: Adjust the Valves

Valve adjustment is necessary for optimal engine performance.

• Use a Valve Adjustment Tool:

  • Follow the specific clearance specifications for your engine model.

• Check and Adjust Each Valve:

  • Rotate the engine to position each cylinder at top dead center (TDC) for adjustment.

Step 7: Set Cam Timing

Setting the cam timing correctly is crucial for engine operation.

• Align Timing Marks:

  • Use the timing marks on the camshaft and crankshaft to ensure they are aligned properly.

• Double-Check Timing:

  • Rotate the engine manually to confirm that the timing is correct before finalizing the installation.

Conclusion

You have now successfully installed a B20/B18 non-VTEC cylinder head, completed valve adjustments, set the cam timing, and torqued the head studs according to specifications. Ensure to double-check all work, and allow the engine to run for a short period before taking it to the track. Regularly monitor for leaks or unusual sounds as you prepare for your next adventure. Happy driving!