Effects of lightweight flywheel? [merged] light weight lightened aluminum ACT fidanza

[Fryguy]

All light weight flywheel newbie threads are merged here.

I'm looking for my car to be very fast at lower speeds; my main goal is very fast acceleration. Will a lightweight flywheel be beneficial to this? Or should I just save up all my money and drop a turbo on my 84k engine

 

[rrussell]

One more question...

When you went from a stock flywheel to a after market light weight flywheel did you notice that it was easier to shift at higher rpm?

 

[rockit11]

this should be linked to the FAQ, a lot of useful info and common questions answered.

 

[jdm_hero]

After some homework on the subject I ordered a fidanza 3.2 clutch kit for my 1g tsi awd and was wondering wether to go with a stock flywheel or upgrade to a lightened one. Which one, a fidanza aluminum or the billet?
This is my DD that will never see 300+ lbs of torque in case you all needed that info to judge by. Thank you

 

[bowtiebuba350]

Id go with the stock better dirivability depending on the clutch you use and helps with launching as weel, light weight fly wheels suck on the street, I had a supra with a 11 lbs flywheel with a act 6 puck clutch it was no fun just driving to work and back.

 

[ScottH]

I've always liked the drivability of the stock flywheel over a lighten flywheel. Just my $0.02

 

[El Cuervo]

Go for the aluminum lightweight flywheel. Better response. I have 1 on my DD and I haven't had any problems. Yes, the rpms do decline pretty fast but they climb fast too. I would definitive get one.

 

[FuelInjected]

hey guys, i am getting my tranny rebuild by jacktrans soon, and i need to replace my flywheel or machine mine (stock). I am planning to have around 350-400hp to the motor by end of winter, just doing my tranny uprade now, replacing clutch to excedy organic stage 1, i heard its better than ACT from some locals here. Also in terms of flywheels I was wondering if its best i get mine machined, or if I could find a new one that is somewaht light I would get it, I have looked through RRE one's, and not sure of those, don't trust them, based on mixed opinions from people, but I am looking for someone that is close to stock, i dont need a 8lbs fidanza i dont think. I need something to retain that daily driving comfort somewhat, so I want it to be very very streetable, close to stock, as I hear its more hassle to drive those 8lbs boys on the street.
Anyways what are my choices? or is best i just get mine machined?
Incase mine is cracked, i want to see what options I have too.
Thanks guys

 

[1992awdlaser]

I have an act flywheel. The driveability isn't that much different then stock with this flywheel. I have driven a car with the fidanza 8lb flywheel and will never buy one because of the low speed driving. Also make sure the flywheel is stepped correctly for whatever clutch you choose.

 

[Crazyjoker77]

its funny you mention the Fidanza and Exedy stage 1 disc as thats what I'm using in my TRE transmission. Really going from stock to this setup was such a improvement I noticed about 200rpm increase in spool time from the fidanza flywheel on my then stock t25. The exedy clutch I also cant say nothing bad about it has'nt slipped on me at and I've been abusing it for almost 20k miles.

I really didn't notice any bad affects daily driving it or at slow speeds.

 

[1992awdlaser]

How did you notice a 200 rpm difference in spool on a t25?

 

[Simpleman1]

I have been using lighten OEM flywheel from RRE mated with CFDF for more than 3 years now, I never had any issues. My car is a daily driver, dealing with Seatte rush hour traffic 5 days a week.

 

[Crazyjoker77]

it started building boost sooner Before the driveline upgrades i was seeing boost at ~2400rpm where as before I wouldn't be in boost till 2600rpm.

 

[1992awdlaser]

it started building boost sooner Before the driveline upgrades i was seeing boost at ~2400rpm where as before I wouldn't be in boost till 2600rpm.

Did you datalog this? The reason I am asking is because of how fast it already spools. And not being able to look at the boost gauge and tach as easy as with a bigger turbo.

 

[welfle18]

ACT 2100 with ACT Lightwieght flywheel worked good for me but this is only coming from a T25 so not all that much power its dealing with it, but I cant complain I love mine.

 

[CTP]

How did you notice a 200 rpm difference in spool on a t25?

An even better question is how do you pick up spool RPM by decreasing load on the motor? I could understand it spooling faster time wise, but spooling sooner in the RPM range makes no sense.


Anywho...
My ACT flywheel works fine for me. I've never driven a DSM with an 8lbs. flywheel, but I've driven Hondas with 8lbs. flywheels and puck clutches and it isn't really that big of a deal. On my car with the 2600 it took a few days to get used to traffic and hill starts, but it's easy to drive now and I have no complaints.

 

[MrBoxx]

I have a Fidanza flywheel in my car and honestly never noticed a difference.

 

[super97gst]

im running an ACT 2600 with one of ACT's Streetlite flywheels. i didnt notice any difference low speed driving wise. it drives just well as it did with the stocker. but i can tell a big difference in how much faster the engine revs because of the flywheel being a little lighter.

 

[1992awdlaser]

An even better question is how do you pick up spool RPM by decreasing load on the motor? I could understand it spooling faster time wise, but spooling sooner in the RPM range makes no sense

Correct.

I will say the car I drove with the fidanza was an evo. As far as I know it had an ACT clutch. I only drove it for about 15 minutes. I am sure if I drove it more I would have gotten used to it. But I didn't like what I saw at first.

 

[JayRolla]

I have a fidanza flywheel and it drives just like stock. Only difference is the motor likes to rev real fast when not in gear and it puts a little more power to the wheels.

 

[DsmKid98GST]

I have driven on both the t-25 and on a 50trim on an act 2600 and xact flywheel. The clutch is heavy but you get use to it. Didn't have any problems drove solid.

I am now driving a fidanza with my 2600 on a 50trim and I can just feel the power as I shift through gears without even touching boost. Way more responsive, but the 2600 is still a beast to drive in traffic.

 

[Asimmons90GSX]

Act Ftw!!

 

[STM tuned]

I like my Fidanza flywheel, drives nice.

Mine as well upgrade it when the trannys out to put on a nice new clutch!

 

[FuelInjected]

I heard from lots of local guys here, that ACT sux big time, my buddy is a subaru freak, and used it once, and said he will never touch that piece of sh** again. Those were his words. So i hear a lot of bad things about ACT around here, I dunno if its different on our cars. I would rather go with Excedy. do fidanza make any flywheels that are like 12-13 lb? or any other companies besides ACT? Just curious.

 

[c4uldr0n]

I have a Fidanza Flywheel with a Comp Stage 4+ (sprung 6 puck) Clutch and the only time I really didn't like it at all is when I was breaking the clutch in. Now that it is broke in it feels awesome and revs really quick.

 

[FuelInjected]

thanks for the input guys.
So basically all you guys with fidanza flywheels, you think its normal for daily driving?
I dont want to be burning shit load more gas, and/or stalling, or being much harder to drive than stock, i dont mind a heavy clutch, but rev's dropping really quick might suck, cus i drive in traffic for about an hour or so each day!!! there and back!, so it sux big time to even have a manual , but i put up with it, cus i have fun on weekends and evenings otherwise, i just want the drivability to remain as easy as stock, as long as its not huge difference i will be getting it most likely.

i don't know about the stepping or anything, any suggestions on which package would be right for me?
I definetly want to go with Excedy clutch.