what are the main differences between these 2 clutches? i've been told the xt will wear my syncros faster so i should go with the hd. is this true? and what is benefits and compromises between going with a full disc like the ss vs a 6 puck like the r6 or g6. and finally what are the pros/cons between solid hub and sprung? my car has stock power but eats clutches so i assumed getting the beefiest clutch is going to last the longest but i'm being told that's not true so i want some more opinions. also i will be changing the flywheel for the first time, as the stock wasn't even resurfaced when the last 2 clutches were put in which i think is part of my clutch problem. so if someone could give me some pro/cons on the act prolite vs streetlite as i can't find much info on them besides weight. i'm being told to get a chromoly and avoid aluminum flywheels, is this a good practice? i really don't care about the noise and actually prefer having a stiffer clutch pedal so drivability isn't a concern as much as longevity.

 

The HD and XT refer to the pressure plate, not the clutch. The XT pressure plate has increased clamp force and can hold more torque. The downside of a heavier pressure plate is increased chatter, increased clutch wear, heavier pedal, also more shock force and torque that is transfered to the transmission which can reduce it's life.

The rule is dont install much more clutch than you need.

No experience with the ACT flywheels, but I'm running a gruppe-s flywheel which is very similar to the ACT street flywheel. No problems with it. It's not much lighter than the stock flywheel so it really didnt affect drivability much. A lighter flywheel will require increased rpm or smoother clutch engagment when starting off to avoid stalling / chatter. Hard to tell if it made a substantial difference in the rpm range.. maybe 5-10 whp but that's just a guess.

 

The XT has more clamp load than the HD so when used with the same disc as the HD pressure plate it's going to hold more torque. The only downside to installing the XT vs the HD is going to be increased pedal effort. It will not wear the syncros any faster than the stock clutch.

The primary benefit to using a full face disc will be smooth engagement and good drivability for daily driving. The only reason you'd consider using a puck disc would for the added heat/torque capacity over a organic disc. The cons to a solid hub disc is increased decel noise froom the transmission (what the springs are there to dampen) and slightly quicker/abrubt engagement without the springs. Chatter etc is related to the friction material on the disc and has absolutely nothing to do with the pressure plate.

If you're car is eating up clutches there has to be a reason for that. Either the install, the clutch, or the driver or all of the above is the cause. Installing the beefiest clutch is not the cure to your problem. Get the right clutch for your power level and driving style and have it installed by someone that knows how to do it right and realize that your driving style is a major factor in the longevity of the clutch.

Other than visual difference of having holes in it to remove weight in the Prolite the only difference between the Streetlite and the Prolite is the weight. Most of the information I just posted can be found by going on our website.

http://www.advancedclutch.com/produc...flywheels.aspx

http://www.advancedclutch.com/produc...d_id=2157#2157

http://www.advancedclutch.com/products/racediscs.aspx

http://www.advancedclutch.com/products/streetdiscs.aspx