From perusing the MSA and VB catalogs, is the Fidanza 10lb flywheel my only option for an aftermarket flywheel? (specifically for a Turbo) I'm looking for something lighter than stock (what is the stock flywheel weight anyways?) but that particular flywheel recommends against a stock or "Stage I" clutch, and I'm also aware of the streetability difference with an ultra light flywheel. So I'm on the lookout for other flywheel options, perhaps one that's less than stock, but slightly heavier than Fidanza's.

 

Lighter weight flywheels are only made for the 225mm non-turbo clutch. The larger 240mm flywheel is what the turbo has. The last thing you want is to take away the strength of your flywheel in a turbo car. Add boost. For the price of a light weight flywheel you can almost buy a brand new turbo.

 

It's not the weight of the flywheel, it's where the weight is. A good lightweight flywheel will have most of its weight on the outside but still have a beefy center. A stock flywheel is heavy all over, and removing weight from the inner part of the flywheel won't affect drivability because it doesn't affect inertia. Look for something thats strong thick aluminum center with a steel outer ring and weights. Some can be customized by adding or removing weights, but you have to get it balanced. The reason a lightweight flywheel is a good idea is because you make a bigger difference by reducing rotating weight than anything else, and your engine has less strain on it, thats a good thing.

 

All the Fidanza flywheels I have seen have been the 240mm. Its doesn't really matter though, as long as you get a clutch that matches then you will be fine. I would highly recommend the Centerforce Dual Friction clutch. I have one and I love it. It feels very similar to stock except the clutch pedal is slightly tighter.

 

The Dual Friction clutch feels close to stock? That's what I'm aiming for. My Turbo's clutch feels noticeabley harder to push in than the one on my NA (I'm not sure what kind my NA one has since it was done by the previous owner). I was under the impression that getting a "stronger" clutch like the Dual Friction meant that it'd be even harder to press in the clutch than what it already is.

 

The dual friction uses two different friction materials. One is a softer, less grippy material that allows some slip for smooth clutch engagement. The second is a grippier material that grabs much better and harder, but not until the other material has already been engaged. That way the car isn't jerking around when you're just trying to cruise, which is a problem a lot of high capacity clutches have. But if you're slamming through the gears, then the clutch will just grab. (up to its torque capacity anyways )

A clutch gets firmer when the pressure plate has a higher clamping force. I don't thind the pressure plate on the dual friction is much higher than the stock one. The secret lies in the material. Now the Centerforce II has a much higher clamping capacity, so the pedal gets alot firmer.