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Clutch Related FAQ Index

Clutch related questions and answers.
We carry a complete line of clutch and flywheel solutions. Be sure to contact us if you do not see your solution listed.




Clutch questions Page 1 / Page 2




  • When should I use an aluminum flywheel?

    Aluminum flywheels were designed to lessen the rotating mass of the motor allowing the motor to spin up faster. A good application for this is road racing or auto-crossing. Aluminum flywheels don't present any issues on the street. However, the engine pulsations may be more prevalent as they are not dampened by the heavier steel flywheel. There is a steel facing that can be replaced once is it worn out.

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  • Is there a flywheel where the imbalance weights bolt on?

    Yes there is. We offer several different flywheels in steel and aluminum were the imbalance weights can be changed by bolting on different weights. Call us for details for your application.

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  • Which clutch friction disk is right for me? Organic, multi-friction, full Kevlar, or Metal?

    Friction disks come in many different surfaces. Which combination is right depends on how the car/truck is going to be used and the horsepower of the motor. See our clutch pages matrix for full details.

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  • How much power can a 10.5" or 11" handle? My motor makes over 600hp. I was told I would need a twin disk clutch.

    A 10.5" full Kevlar clutch can handle up to 800hp in a 3300 pound car. 11" clutch can handle about 900hp. How much power a clutch can handle is dependent on how heavy the vehicle and how it is being used. When you start moving upwards of 700hp and/or aggressive use, we will typically recommend a twin-disk. Call us to discuss your particular situation and we'll recommend the best choice.

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  • I am interested in converting my six cylinder 3-4 speed car over to a T-5 five speed, is there a clutch to do this?

    Yes there are 8.5" and 9" available with the T-5 spline size. Call us for details.

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  • Does anyone offer a new 8.5" clutch set for a 170/200ci inline six cylinder?

    Yes, we offer a NEW stock replacement 8.5" clutch set for Falcons, and Mustangs. The clutches are completely new, not rebuilt, and come with new bearings and alignment tool. Best of all it's backed by a one year warranty.

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  • What is the torque spec for pressure plate bolts?

    5/16 and 8mm bolt should be torqued to 25ft/lbs in a star like pattern. It is best to start out with 15ft/lbs and work your way up, this way the pressure plate remains flat.

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  • What is a multi-friction clutch?

    A multi-friction clutch is when two different friction material facings are applied to each side of the clutch disk. For added performance and service life, Kevlar is added to the pressure plate side of the clutch disk and the other side remains organic. For street and strip, a multi-friction disk is often a combo of Kevlar and metal. This allows the clutch to operate as smoothly as it can with more bite off the line. Contact us if you have detail questions on other combination's and applications.

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  • Should I resurface the flywheel before installing a new clutch?

    Yes. This should be done by a blanchard grinder and not on a lathe. The grinder keeps the flywheel cool while resurfacing and put back in the machine marks that are need to help break in quicker while imbedding fresh clutch material on the surface. Flywheels become dished due to heat cycling even when there is even wear. If there are any grooves or hot spots and the machined marks are gone, it should be resurfaced. It will prevent shattering and promote better clutch wear. If the flywheel has surface cracks that are deep, the flywheel needs to be replaced. Like brake rotors, flywheels have thickness limits and can only be resurfaced so many times.

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  • Why is Superior Clutch better than other manufactures?

    Each clutch is hand built and 100% QC for release and proper clamping. All clutches are zero balanced so it won't affect the balance of the motor. All clutches are backed by a one year warranty for defects and workmanship. Superior Clutch is about quality and understanding the needs of its customers.

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Clutch questions Page 1 / Page 2