I copied this from the AMS website:

All Fidanza ring gears are heat treated for durability. They are heated, pressed on and then secured using grade 10 fasteners. You will not find better materials but keep reading because Fidanza machining and design process will knock your socks off. Most companies design their flywheels so that they can be machined quickly and with the least amount of effort. Fidanza Flywheel designs their flywheels to produce the best increase in performance and the most durability.

 

Can you find the inconsistencies?

 

Any input appreciated

 

No, I can find sales text probably taken from Fidanza's own site or brochure.

For some they are just another part to sell with a profit margin. Many evom vendors are solely commodity resellers and don't actually have a lot of hands on experience with the actual products themselves. AMS and BR are exceptions.

 

found pics of my fidanza flywheel...















mated with my act xtss in the 6-speed. it starts up fine, launches fine and drives fine for 17k abusive miles so far and counting.

 

No problems from my Fidanza flywheel.

 

The Buschur excerpt say it uses grade 8 fasteners and the AMS one say it uses grade 10. Whatever grade they were mine failed leaving the ring gear loose to spin and rattle around the clutch assembly.

 

I finally got around to swapping my broken piece of crap Fidanza flywheel for a good condition used ACT one that i purchased from a fellow member. I also spoke with Fidanza about my disappointment with their product. I told the person that i spoke with on the phone that I had purchased the flywheel and 3.2 clutch combo after reading the review on the front page of the site. I explained what had happened to me.

I was told by Fidanza that this only happens in about 5 out of every 1000 units they produce. I told him that iI couldnt understand how a ring gear could just fall off of the flywheel. I asked him why his "High Quality" rivets had failed against the torque created by a starter motor. He proceeds to tell me that, during production the ring gear is heated and pressed on, and when it cools it should be stuck in place. He said the 3 rivets are there just in case.

Then he asks me what clutch Im running; and I told him ACT sprung six puck. His response?:

"Oh thats why it came off you must have overheated the flywheel because you have a ceramic-metallic clutch."

WTF???

Isnt the 4.3 kit that you guys make ceramic-metallic six puck with a sprung hub?

He then says well we dont pay for labor or parts let me talk to my manager.

He come back and say for me to remove and pay for the parts and labor myself and pay to ship back their broken flywheel, and they will rebuild it for free (how generous). I almost forgot Ill also be paying the return shipping.

I WILL NEVER, EVER BUY ANYTHING FROM FIDANZA AGAIN!!!
And I suggest you do the same.
Thanks for reading here are the pics:

 

Damn! I saw the other thread where the Fidanza flywheel tore up the whole engine bay.
I don't need another reason not to buy from them at all. Seems like there customer service is pretty f***** up too. Sorry to see this happen.

 

All I can say is 1 piece steel FTMFW!!! Who thinks that an aluminum steel sandwich flywheel is a good idea? The two materials expand and contract at different rates. Of course the steel gear separated from the aluminum. It's not like they can't make a steel one light enough.

That part takes a lot of heat and abuse plus you don't ever want one to fail.

 

yeah no more aluminum flywheel crap

 

I have used these and sold these for years... this is definitely a rare occurrence... oem and aftermarket parts do fail sometimes.. even the one piece stuff can warp, crack or break teeth off the ring gear... sorry it happened with your vehicle.

 

What a dumbass. Heated (expansion) then pressed on, when it cools (contraction) it will not be "stuck on".

Unless they heat the FLYWHEEL portion until it expanded to the dimension of the ring gear, then the FLYWHEEL cooled ONTO the ring gear. This process will cause the ring gear to be stuck on.

 

im personally not a big fan of the fidanza clutches or flywheels. go exedy or a top name brand and spill out the extra cash for it

 

If that ring gear snapped at high rpm it could have killed you or a passenger, destroyed everything in the engine bay.