9” Ford Complete Short Stack

Special Offer
Nobody Offers This Quality At This Low Price

1. All New 9” Housing
2. 2 ½” GN Snouts
3. 5 x 5 Hubs Complete With Bearings and Drive Plates
4. Directional Nuts – Won’t Unthread
5. 31 Spline Forged Axles

6. Centered Pinion

Rotors Not Included
Available in 60” or 62” Width – Hub Flange to Hub Flange

Quartermaster Clutch Technical Information

Flywheel

Inspect for physical damage and cracks. Inspect ring gear for excessive wear. Check Friction surface for flatness. Maximum allowable warpage is .006”. When resurfacing the flywheel, the step height of .100” + .000”/-.002” must be maintained

Clutch Housing

Check that the pressure plate and floater plate(s) slide through the housing freely. This will ensure the clutch will release properly. Check for cracks from high mileage, discoloration from excessive heat, and grooves cut into the inside diameter by the friction discs due to bell housing flex and mis-alignment or a worn pilot bushing

Clutch Pac

Inspect for worn splines, cracked hubs, loose rivets, and cracked or bent discs. Measure the discs and replace when the minimum thickness is reached.

Floater Plates

Check for flatness. Maximum allowable warpage is .006”. Measure the thickness. Replace if below the minimum specified for that particular clutch.

Clutch Cover

Check diaphragm spring for discoloration from excessive heat. Check for excessive wear on spring fingers from release bearing contact. Check for cracks on aluminum clutch covers after extended service. The clutch cover is not a field serviceable item.

Clutch Installation Information

Quartermaster Clutches

4.5” Clutch Assemblies

Let’s face it, when it comes to who’s winning, most often you’ll find a Quarter Master clutch in the car.

Introducing the Latest and Lightest

The new Pro 4.5” clutch has moments of inertia numbers comparable to a 5.5” 3 disc carbon fiber clutch. From the veteran 7.25” to the new standard 5.5” comes the latest in metallic clutch technology, the Quarter Master pro 4.5” clutch. The new 4.5” clutch needs less travel to achieve full release as compared to a 5.5” clutch. This results in a much quicker engagement which will be harder for the driver to control. QMI recommends that you change the release bearing hydraulic ratio to regain driveability. You should install a clutch master cylinder with a piston area of at least 25% less than what you have been running.

With a superior cover design, and an exclusive friction material compound for high torque capacity, the Quarter Master 4.5” 3 disc clutch can be used in virtually any application where the 5.5” is currently being used.

4.5 Complete Clutch

All Clutches Use 710200 Throw Out Bearing

4.5” Disc Pacs – 3 Disc

Service Parts for 4.5” Clutches

Flywheels

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