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06-11 Civic Si / EM1 Clutch master cylinder upgrade

This guide will show you how to install the EM1 CMC upgrade kit in a 2006-2011 Honda Civic Si.

  • Author: Hybrid Racing
  • Time estimate: 1 hour
  • Difficulty: Moderate

Edit Step 1 06-11 Civic Si / EM1 Clutch master cylinder upgrade  ¶ 

Image 1/3: Next remove the positive terminal, then loosen the battery bracket. Image 2/3: Next remove the positive terminal, then loosen the battery bracket. Image 3/3: Next remove the positive terminal, then loosen the battery bracket.

Edit Step 1 06-11 Civic Si / EM1 Clutch master cylinder upgrade  ¶ 

  • Begin by disconnecting the negative terminal of the battery.

  • Next remove the positive terminal, then loosen the battery bracket.

Edit Step 2  ¶ 

Image 1/3: Lift up on the battery cover and remove it. Image 2/3: Remove the battery from the car. Image 3/3: Remove the battery from the car.

Edit Step 2  ¶ 

  • Once the battery bracket is loose, rotate the studs and pull the assembly out.

  • Lift up on the battery cover and remove it.

  • Remove the battery from the car.

Edit Step 3  ¶ 

Image 1/2: Image 2/2:

Edit Step 3  ¶ 

  • Remove the battery tray cover to expose the battery tray.

Edit Step 4  ¶ 

Image 1/1: Doing this will prevent an unwanted leak of the fluid. You can drain the used fluid into a brake fluid safe container for disposal.

Edit Step 4  ¶ 

  • Use a pair of clamping pliers to pinch the reservoir fluid line that runs to the clutch master cylinder.

  • Doing this will prevent an unwanted leak of the fluid. You can drain the used fluid into a brake fluid safe container for disposal.

Edit Step 5  ¶ 

Image 1/2: You may need to hold the CSC fitting with another wrench. Image 2/2: You may need to hold the CSC fitting with another wrench.

Edit Step 5  ¶ 

  • Using a metric line wrench, remove the factory clutch line from the clutch slave cylinder.

  • You may need to hold the CSC fitting with another wrench.

Edit Step 6  ¶ 

Image 1/3: Locate and remove the clutch master cylinder pin. Image 2/3: Loosen the clutch interlock switch sensor. You will need this loose for clutch adjustment at the end of the install. Image 3/3: Loosen the clutch interlock switch sensor. You will need this loose for clutch adjustment at the end of the install.

Edit Step 6  ¶ 

  • Remove the lower dash panel to allow for easier access to the pedal assembly.

  • Locate and remove the clutch master cylinder pin.

  • Loosen the clutch interlock switch sensor. You will need this loose for clutch adjustment at the end of the install.

Edit Step 7  ¶ 

Image 1/2: Image 2/2:

Edit Step 7  ¶ 

  • Using a 12mm socket, remove the two mounting nuts that hold the clutch master cylinder in place.

Edit Step 8  ¶ 

Image 1/3: Image 2/3: Image 3/3:

Edit Step 8  ¶ 

  • Locate the three mounting locations for the factory clutch line. Un-clip them all now.

Edit Step 9  ¶ 

Image 1/3: Remove the reservoir fluid line from the top of the clutch master cylinder, then remove the clutch master cylinder assembly & clutch line from the car. Image 2/3: Remove the reservoir fluid line from the top of the clutch master cylinder, then remove the clutch master cylinder assembly & clutch line from the car. Image 3/3: Remove the reservoir fluid line from the top of the clutch master cylinder, then remove the clutch master cylinder assembly & clutch line from the car.

Edit Step 9  ¶ 

  • Un-clip the factory wiring harness from its mounting bracket.

  • Remove the reservoir fluid line from the top of the clutch master cylinder, then remove the clutch master cylinder assembly & clutch line from the car.

Edit Step 10  ¶ 

Image 1/3: Using a pair of C-Clip pliers, squeeze the C-clip and remove the OEM CMC rod & fork. Image 2/3: Using a pair of C-Clip pliers, squeeze the C-clip and remove the OEM CMC rod & fork. Image 3/3: Using a pair of C-Clip pliers, squeeze the C-clip and remove the OEM CMC rod & fork.

Edit Step 10  ¶ 

  • Remove the factory CMC gasket.

  • Using a pair of C-Clip pliers, squeeze the C-clip and remove the OEM CMC rod & fork.

Edit Step 11  ¶ 

Image 1/3: Using the C-clip pliers, remove the rod and for from the EM1 CMC. Image 2/3: Using the C-clip pliers, remove the rod and for from the EM1 CMC. Image 3/3: Using the C-clip pliers, remove the rod and for from the EM1 CMC.

Edit Step 11  ¶ 

  • Pull the dust cover back on the EM1 CMC to expose the C-clip.

  • Using the C-clip pliers, remove the rod and for from the EM1 CMC.

Edit Step 12  ¶ 

Image 1/3: Be sure to grease the rod before inserting it into the EM1 CMC. You can use some of the grease that is on the CMC, or supply your own. Image 2/3: Be sure to grease the rod before inserting it into the EM1 CMC. You can use some of the grease that is on the CMC, or supply your own. Image 3/3: Be sure to grease the rod before inserting it into the EM1 CMC. You can use some of the grease that is on the CMC, or supply your own.

Edit Step 12  ¶ 

  • Compare the CMC's & rod/fork assemblies.

  • Be sure to grease the rod before inserting it into the EM1 CMC. You can use some of the grease that is on the CMC, or supply your own.

Edit Step 13  ¶ 

Image 1/3: Image 2/3: Image 3/3:

Edit Step 13  ¶ 

  • Using the C-clip pliers, insert the OEM rod & fork into the EM1 CMC. The EM1 dust boot is optional.

Edit Step 14  ¶ 

Image 1/3: Slowly push the rod in and watch for air bubbles to come out of the fitting. The goal of this is to remove as much air from the CMC as possible. This will aid in the bleeding process. Image 2/3: Cap the fluid outlet on the EM1 CMC. Image 3/3: Cap the fluid outlet on the EM1 CMC.

Edit Step 14  ¶ 

  • Once the EM1 CMC has the correct rod/fork, fill it with fluid. We recommend DOT 4 brake fluid.

  • Slowly push the rod in and watch for air bubbles to come out of the fitting. The goal of this is to remove as much air from the CMC as possible. This will aid in the bleeding process.

  • Cap the fluid outlet on the EM1 CMC.

Edit Step 15  ¶ 

Image 1/3: Install the clutch line with the banjo fitting pointing away from the CMC mounting flange. Image 2/3: Tighten the bajo fitting. Image 3/3: Do not over tighten the banjo, you could strip or break the fitting.

Edit Step 15  ¶ 

  • Be sure to install the copper sealing washers on both sides of the banjo fitting.

  • Install the clutch line with the banjo fitting pointing away from the CMC mounting flange.

  • Tighten the bajo fitting.

  • Do not over tighten the banjo, you could strip or break the fitting.

Edit Step 16  ¶ 

Image 1/3: Bleed the system and adjust the CMC rod accordingly for proper clutch engagement. Tighten the clutch interlock switch sensor once the adjustment has been made. Image 2/3: ''Optional - The new clutch line will be able to mount in the factory hard line clips. '' Image 3/3: ''Optional - The new clutch line will be able to mount in the factory hard line clips. ''

Edit Step 16  ¶ 

  • Re-install the CMC into the chassis.

  • Bleed the system and adjust the CMC rod accordingly for proper clutch engagement. Tighten the clutch interlock switch sensor once the adjustment has been made.

  • Optional - The new clutch line will be able to mount in the factory hard line clips.

You're Done!

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