The weight of the ACT clutch assembly will usually be the same as a stock O.E.M. clutch assembly.
Are ACT clutches balanced?
Yes! All ACT clutch assemblies are computer balanced to help ensure smooth operation.
Do ACT clutches require a break in period?
For organic street discs "00 and SS" we recommend breaking in the clutch for 200-300 miles with mild engagement such as stop and go city driving prior to racing or spirited driving. ACT race discs usually only require a few hard slips to lap in the surfaces prior to normal driving or racing. Do not overheat the clutch during the break in period.
Are ACT clutches repairable or rebuildable?
Rebuild or repair may be possible in some cases, after inspection of the clutch assembly. Please contact our technical department for further information. Because of special modifications we do not recommend servicing by a general clutch rebuilder.
Will an ACT clutch increase pedal effort?
ACT pressure plates are specifically designed to handle high torque applications. With ACT's durable design you can expect to have an increase in pedal effort between 15-80% depending on application. We could design our clutches with less pedal effort but longevity, torque capacity, or engagement quality would suffer.
What is a flywheel step?
The flywheel step is extremely crucial for the clutch to work properly. The flywheel step determines the proper working range of the pressure plate. The step is the distance between the friction surface, and the pressure plate mounting point on the flywheel. Depending on the make and model of the car it can either be an UP step or Down step, and sometimes the flywheel will be flat. Check the manufacturers specifications about the proper flywheel step for your application.
Can the XACT Flywheels be resurfaced, and is there a special process?
Yes, ACT XACT flywheels can be resurfaced just like a stock flywheel and there is no special process. Make sure that the proper flywheel step is done, as this will affect the clutch function if it is not correct.
Can I use an aftermarket flywheel with an ACT clutch?
The ACT clutch system is designed to work with both stock and good quality aftermarket flywheels. Inferior aftermarket flywheels may have trouble with warpage or high wear. If you are replacing your flywheel, be sure that the new flywheel meets the same specifications, such as proper step, ring gear tooth count, flywheel thickness, ring gear offset, Etc.
Can an ACT Race Puck style disc be used for daily driving, and is it recommended?
The race disc is a very aggressive disc that offers a no nonsense performance action. The engagement is so harsh that taking off from a stop can cause chatter and or an uncomfortable noise. The chatter and noise has no affect on the performance on the clutch and no affect on the drive line components. This type of disc should only be used in a professional race setting, and never used on the street. ACT always recommends using an organic disc on the street because it offers a smoother engagement and a longer lasting performance value for everyday drivers.
How do I purchase an ACT product?
ACT has many distributors around the globe feel free to contact an ACT customer service rep for the nearest one to you. ACT products can also be ordered online at www.advancedclutch.com
I just ordered an ACT product. How do I check to see if the part is right for me?
ACT customer service can answer many questions concerning fitment and custom applications feel free to contact us at 661-940-7555
My ACT clutch looks different than the previous clutch. Do I have the right parts?
There are many manufacturers and designs for clutches. We do our best to use the best parts for your application. Check the part numbers and compare what is listed on our application chart for your vehicle. If the components fit properly without modification, chances are you have the right parts. If it appears something needs to be modified to make it work, stop and contact our tech department.
Can an ACT disc be purchased separately?
ACT discs can be purchased separately, however because of the labor involved in changing a clutch we do recommend replacing the entire clutch at the same time.
Does ACT make anything for automatic transmissions?
ACT only offers components for manual transmissions. The automatics use a totally different setup all together and nothing is interchangeable.
How long can I expect my new ACT clutch to last?
All ACT products are designed with longevity in mind; however, clutch life will greatly depend on the vehicle, your type of driving and output of the engine. For example a vehicle driver in heavy stop and go traffic will have a shorter clutch life than the same vehicle that is driver on the open highway.
Which ACT clutch assembly is best for my vehicle?
It is important to match the proper ACT clutch system with the vehicle and its intended use! Knowing what characteristics you want in a clutch and the power capability of the engine is important.
What components are in an ACT clutch kit?
All ACT kits contain a pressure plate and clutch disc, release bearing and alignment tool. Pilot bearings are in selected kits that call for a pilot bearing and have it available. Kit component parts are listed on our application chart.
My new throwout bearing appears to be off center on the bearing retainer and wobbles. Is it defective?
There is nothing wrong with the bearing. Vehicles that have a self-centering bearing may appear to be off center or improperly manufactured, however, rest assured, the bearing will align and center itself properly during normal usage.
Are there any special modifications necessary to install an ACT clutch?
All ACT clutch assemblies are designed to be a direct bolt in replacement for the stock clutch assembly. Pedal height adjustments are sometimes necessary depending on application. Please refer to our technical bulletins for further information.
Is changing the pilot bearing recommended when installing a new clutch?
Yes, if your vehicle is equipped with a pilot bearing or bushing, it is recommended to replace and properly lube the pilot bearing/bushing when changing the clutch.
Is it necessary to use the alignment dowel pins on my clutch?
Yes! The alignment dowel pins properly locate the pressure plate to the flywheel. Without these pins severe vibration and engine damage can result. The alignment dowel pins should always be replaced if they are damaged, broken off, or missing from the flywheel.
What clutch bolts and torque specifications should I use?
When using stock clutch bolts, refer to the manufacturer's service manual for proper torque specifications. New bolts are highly recommended. ACT suggests using SAE Grade 8 or Metric Grade 10.9 fasteners and increasing the torque specifications (5/16 or 8mm bolts can be tightened to at least 30 ft. lbs. of torque). Lock washers or thread locking compound is also recommended. Proper torque is crucial to your safety, take the time to get the correct pressure plate assembly and flywheel bolt torque specifications and tighten the bolts correctly using a high quality torque wrench. Also be sure to tighten bolts using a diametrical pattern as indicated in your vehicle's repair manual. Never use air tools for installing or removing clutch bolts!
What parts in the clutch system linkage should I inspect before installing a new clutch?
If you are having clutch trouble prior to installing an ACT clutch, find the cause of the problem before installing the new clutch. There are many problems caused by worn or faulty linkage, oil contamination, and misalignment or transmission damage. Please see ACT's installation instructions and your vehicle's repair manual.
Is flywheel resurfacing necessary before installing a new clutch?
A smooth, flat flywheel surface is essential for proper clutch operation. Flywheels are subject to heat, scoring and warping during use. If upon careful inspection there are signs of scoring, heat damage or warpage the flywheel should be resurfaced or replaced to assure good clutch performance. Resurfacing should be done on a flywheel-grinding machine only. Refer to your factory service manual or ACT information for resurfacing specifications (Flat, Step, Etc.). WARNING: IF YOUR FLYWHEEL SHOWS ANY SIGNS OF CRACKING, REPLACE IT! Never roughen the flywheel clutch surface with sanding as this reduces clutch life. The surfaces are designed to rub against each other (Producing Friction), not tear into each other (causing abrasion). If you have any further questions, please call (661) 940-7555 and ask for the tech department.
What could cause poor shifting quality?
Improper clutch release caused by faulty linkage and/or improper adjustment.
What could cause clutch slippage?
Improper clutch adjustment, lack of freeplay.
What would cause inadequate clutch release?
Inadequate clutch release can be caused by many problems. Possible causes may be as follows: Clutch linkage not properly adjusted or reset. Flywheel not resurfaced before new clutch installed. Flywheel surfaced improperly (I.E. Incorrect flywheel step). Flywheel machined too thin or not manufactured to stock (O.E.M.) specifications. Lack of lubrication on linkage or release bearing collar. Linkage worn or damaged. Hydraulics defective, leaking or air in the system. Cable stretched or damaged. Pilot bushing binding due to improper bellhousing alignment, bellhousing damaged, or loose. Clutch disc installed improperly. Clutch disc hub rubbing against flywheel bolts. Clutch disc binding on input shaft, damaged splines. Input shaft bent causing clutch disc runout. Pressure plate assembly and/or clutch disc bent or damaged. Clutch disc is too thick or has excessive Marcel (Too much cushion between the friction facings). Pressure plate has defective or damaged torque drive straps. Damaged, worn, or improperly installed pilot bushing/bearing. Oil or grease contamination on clutch facings. Damaged or worn throwout bearing collar. If you have any further questions, please call (661) 940-7555 and ask for the tech department.
What could cause clutch chatter?
Chatter is when the car shudders as the clutch is being engaged. Possible cause may be as follows: Flywheel has excessive run-out. Flywheel was not resurfaced or improperly resurfaced before the new clutch was installed. Damaged or excessively worn CV joints. Bad U-Joints in drive shaft or U-Joints misaligned. Excessive backlash in differential. Excessive driveline angle. Bad leaf springs, bushings or mounts. The use of an aggressive clutch disc designed for racing. Defective pressure plate and/or disc. Disc has inadequate Marcel (Not enough cushion between the friction facing.). Oil or grease contamination on clutch facings. Worn or damaged clutch linkage. Bent pressure plate assembly and/or disc. Improperly tuned engine. Worn or damaged engine mounts or transmission mounts. If you have any further questions, Please call (661) 940-7555 and ask for the tech department.