East West Engineering
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• East West Racing Clutches are designed utilizing a one-piece billet cover proprietary metallic alloy. All clutch components are manufactured with strict aerospace standards for quality of material and tolerance.

• East West flywheels are billet aluminum units, engineered to provide many cycles of trouble free service. It is one of the strongest and lightest flywheels available today.


STEP 1: Inspection

East West recommends the following inspections be performed before installing your

1. Inspect the crankshaft flange for burrs and dings; remove them with a file or emery cloth if necessary.

2. Inspect the input shaft of your transmission for signs of bending or twisting.

Make sure that the clutch discs slide the entire way onto the input shaft

without binding. Do NOT use any type of lubricant on the splines of the input shaft.

3. Inspect the bell housing for proper alignment. This is crucial to the proper operation of your East West clutch. Misalignment may be found on aftermarket bellhousings, and most manufacturers provide alignment instructions with the bell housing.

• Inspect transmission pilot hole/crankshaft concentricity, using a dial

indicator with the base attached to the crankshaft flange. Inspect the

transmission pilot hole for concentricity to the crankshaft centerline

within .010" total indicated runout.

• Inspect the pilot bushing/bearing for wear. East West recommends installing

a new pilot bushing/bearing, this assures proper transmission shaft


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alignment. A defective pilot bushing/bearing will allow the input shaft

to run out, causing release problems, this runout condition can break

discs, hubs, or cause severe chatter.

• Inspect the transmission face of the bell housing to assure it is square to the crankshaft face within .006" If the measurement is not within this specification, have the bellhousing machined flat to bring the mounting surfaces parallel.

Warning: If the bellhousing is not square to the block and/or the

transmission pilot hole is not concentric with the crankshaft, improper

release and accelerated wear WILL occur.

Figure 1

STEP 2: Clutch Installation

1) Install pilot bearing in flywheel (most applications).

2) Install flywheel on crankshaft. Fit should be easy slip or slightly snug.

3) Install flywheel fasteners and washers, making sure all threads are clean and free of oil and debris. Use red or green loctite and torque to proper specs. (1/2-20 bolts – 100 to 105 ft lbs; 7/16 – 20 bolts – 75 to 80 ft lbs).

4) Install stands making sure flats are not overlapping heat shield.

5) Install discs and floater plates in proper sequence and insert pilot shaft to line up

6) Install pressure plate/ cover assembly, cover locating washers and nuts (using a small amount of anti-seize on threads is recommended).

7) In a rotational cross pattern, snug cover nuts enough to draw pressure plate assembly down to within .010" of its final position. Use the dial indicator at each stand location.

8) Rotate stands up to meet the cover and torque (3/8 nuts – 44 ft lbs; 7/16 nuts – 50

ft lbs; 1/2 nuts – 70 ft lbs).

Note: At this point the pressure plate assembly should be at your designed ring height from the top cover to the contact point on the pressure ring (this may be the top of the pressure ring or a step

machined into the pressure ring to achieve this dimension). Note: The dial indicator is used as a reference gauge and should be calibrated periodically to assure accuracy.


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9) To move Cover, loosen cover nut and rotate adjusting stand up or down to achieve proper height.

10) Now that the Cover is close to its final setting, use the dial indicator to obtain the exact pressure plate height. Slip the dial indicator into one of the six inspection This is the correct installed height. Proceed to the next hole until all six have been "zeroed" and double-checked. Make sure cover nuts are torqued before checking with indicator. 11) Setting Clutch Release Clearance – Insert dial indicator into inspection hole and hold in position. Have a team member depress clutch pedal. Set pedal stop so that the clutch has between .050" and .070" release clearance. Always check 2 holes 180 degrees apart then average the number. Always use a pedal stop, and never allow the clutch levers to contact the Cover or use the Cover as a pedal stop.

East West Racing Clutch Maintenance:

Between Round Procedures (Minimum Recommendations)

1) Remove bellhousing inspection cover/ covers.

2) Cool clutch with fan.

3) Check for wear with dial indicator.

4) Re-zero clutch if wear exceeds .003".

5) Check release clearance.

6) Reset release clearance if it exceeds .005" of original setting.

7) Visually inspect clutch through inspection hole in bell housing:

• Make sure there is ample throw-out clearance

• Assure static and counter-weight nuts and bolts are tight

• Inspect for excessive lever wear.

• Inspect for discoloration of discs or floaters or anything else unusual.

8) Always re-torque cover nuts after each run regardless of whether or not readjustment is required.

9) Make any clutch tuning adjustments necessary and re-install inspection cover/ covers.

Between Race Maintenance (Minimum Recommendations)

1) Remove clutch from vehicle making sure to keep all parts such as discs and floaters in the same order they were installed in.

2) Wipe clutch discs clean with dry cloth (Never use solvents).


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3) Clean floaters, flywheel, stands and pressure plate assembly with a non- petroleum based cleaning fluid and dry thoroughly.

4) Inspect discs for chipping, warping, glazing, discoloring, and hardness. Resurface if necessary.

5) Inspect floaters for cracks, warping, worn lugs, high spots and discoloration.

6) Inspect the flywheel assembly for warping. Inspect the heat shield for wear, high spots, discoloration and excessive smearing. Inspect flywheel studs for thread

damage. Inspect the pilot bearing condition. Review the general condition of the flywheel.

7) Inspect pressure plate assembly for warping, cracks, worn levers, discoloration, heat shield wear, excessive smearing or wear.

8) Inspect throw-out bearing and associated components for wear, freedom of movement and general condition.

Parts and Service:

East West Racing Clutches offers complete service and repair on East West racing clutches and East West Racing products, as well as technical support.

Remember the clutch is a crucial part of a successful combination and is subjected to the worst possible abuse, therefore it is imperative that it is maintained regularly and properly for maximum performance.

Returning your East West Racing Clutch:

Package the complete unit carefully (it’s always a good idea to hold on to the original packaging). Place a note explaining any problems you might have encountered, or instructions for rebuilding, in a conspicuous place inside the box, include your name; return address, daytime phone number, and billing instructions. Send the packaged clutch:

East West Engineering,32 Affonso Dr. Carson City, NV 89706.

Payment/Billing Instructions:

We accept (Visa or MasterCard). We will need the credit card number with expiration date and the name that appears on the card before rebuilding your clutch, so please include this information with your note. We will send the rebuilt clutch COD if requested.

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