Exedy Lightweight flywheel with stock clutch; 2004 STi
 

Has anyone ran on a stock Subaru, a lightened exedy or ACT flywheel with a stock or stage 1 clutch? Any thoughts on the change in rev quickness, any other problems or concerns you had at first? Or does anyone run that setup now that i can ride in your car to see first hand? Trying to decide if i just want to replace the flywheel with a factory piece or go lighter. Its right out of the STI pamphlet at the service counter. I found one for cheap. Thanks for any input.

James

Im interested as to why your just changing out your flywheel?

IMO its only worth getting a LWFW if your running a big turbo that spools up above 5k and you need to keep the RPMs up. Like if your running Auto-x. or ?drifting?

On a Suby you have AWD and the lack of rotational mass in a LWFW will cause a loss of initial TQ to the drive line. Also its way harder to launch/take off fast with a LWFW. Most guys who run 1/4 mile in a Subaru will tell you they prefer the stock or heaver FW.

What do you want to do or accomplish with LWFW or is is a $$$ saving attempt only.
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Its not a track car by any means. Just attempting to save money rather than buying a stocker. The clutch needs replaced so im doing the flywheel too.

If the current OEM FW is not burnt or heat creaked just get it resurfaced and use that.
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Thats the ****ty thing is i have to get everything all apart to do it. And its my daily, so i cant have it down for any amount of time other than the weekend. And no one will resurface a flywheel around here on a saturday or sunday. Thats why i was asking about just getting a new one.....

I guess i have some thinking to do

I think either way you'll be fine. You have a turbo'd subaru so it's not like a lightened flywheel is going to net you some sort of crazy gain. I personally liked the faster drop in revs with the lightened flywheel opposed to the stock one. Just a preference for me. You know what a stock flywheel is capable of so if you're unsure then I'd stick with what you know.

I would recommend keeping the stock fw. I have a lwfw in my LGT. It makes starting from a standstill tricky and it's noisy on decel. It's eagerness to rev from a stop will contribute to faster clutch wear if you aren't careful.

On the flip side, it makes rev matching a joy. You'll feel like the stig when you get it right.

Im a pro at rev matching with the stock one, so i guess i'd be just as good.....now i really dont know lol

I'm partially curious how a lightweight flywheel behaves. I'll be replacing my clutch soon and I was thinking about replacing my flywheel too. They only make one and it's ~13lbs. The stock wheel is 30lbs, other than quicker revving up and down, how is this going to impact me?

Sorry to thread jack :), but it's kinda relevant.