The Fidanza steel flywheels are designed to be some the strongest flywheels on the market. They are designed to be used where extreme strength is the issue and not increased performance. Some examples of this would be in rock crawling vehicles and sand rails. Their aluminum flywheels are also very strong and will give a tremendous boost in performance without affecting driveability.
Since every Fidanza product is CNC machined, they are incredibly accurate. The manufacturer does, however, recommend that you balance your new flywheel along with your new clutch pressure plate. This should be done by a reputable and competent machine shop.
For both the clutch and flywheel mounting bolts you should follow the original manufacturers torque specs for your car. Fidanza does recommend using a small amount of semi-permanent Loctite on the flywheel mounting bolts. They also recommend replacing both sets of bolts. These can be gotten from your local dealer or from a company such as ARP Fasteners.
As long as the clutch will bolt to the factory flywheel and uses the factory step height, it will fit on the Fidanza flywheel. You can also use any type of disc material including but not limited to organic, Kevlar, metallic, and even sintered iron. The manufacturer also put multiple clutch patterns on many units.
Yes, but it is only possible if the clutch has extreme heat damage due to excessive slipping of the clutch. The type of clutch disc material used causes most clutch chatter. The more abrasive and 'grabby' the material is, the more chatter you will have.
Most flywheels have at least one crank hole that is offset. It is important to turn the flywheel by hand on the crank until you get it positioned so that all the bolts will line up.
Yes, this is by design. Your new flywheel is a performance item and designed to much tighter tolerances than the factory unit.
Fidanza designs their flywheels using the factory step height. The only exception would be custom units or those intended for multi disc clutches.
Yes, the manufacturer does, however, recommend replacing the friction plate since the cost is very similar and you are then assured to retain all factory dimensions.
It is based on your engine and the modifications you make. Your driving style also must be taken into consideration. Fidanza recommends booking time on a chassis dyno and using it as your guideline for setting your new gears.