Lighten flywheel question

[ibreakmytsi]

I'm putting an act 11 lb flywheel on my car this weekend.. Anyone ran one and what's it like?

 

[eclipsyco]

Would like to know the same thing I've read that car will rev faster and you have to rise the idle rpm a bit to avoid stalling.

 

[xxNocturnalxx]

I've run a ACT flywheel in my GSX and currently in my Mirage (I think it's 12.5lbs. though), its really not that noticeable, the revs are a bit quicker and the car feels a bit lighter.. but keep in mind some people actually prefer the stock heavy flywheels on turbo charged cars because it helps spool BUT if you have studder box or similar launch control it really doesn't matter. Flywheels are cheap so most people just go with a lightened one and there is nothing wrong with that, leave the 8lb. flywheels to the Honda kids though.

 

[my dreamt dsm]

Worst upgrade EVER.
My car bogs off the line every damn time at the track and little(noticeable) on daily driving conditions. I'm just to lazy to switch it out. You WILL notice a lot of light flywheels go on classifieds, that should tell you something. Spend that money on injectors, manifold, even a damn intake would give you more noticeable gains.
On a side note you also come to a stop faster. Say slowing down from freeway speeds.

 

[benstian]

I am running a light flywheel in my Evo 2 and as the other guys tell you, it will stall much easier and can take some time to get used to.

 

[1990dsmkid]

a lightend flywheel isnt that bad. I boight my car with a rps flywheel which is like 9lbs and it did rev really quick but also dropped really quick. I had no problems dd it and never really had it stall after I adjusted the idle corretly. Now im upgrading to the act streetlite. Go ahead and run it im sure youll be fine and wont notice much different might just take a little to get use to it thats all

 

[XiKeiyaZI]

Lightened flywheels are generally a preference of taste and overall driving. If you are looking for quicker revs and a quicker throttle response while not minding to watch your idle when you press the clutch in then it's a positive thing.

The thing between a lightened flywheel and stock is the overall rotational mass. With the stock, heavier flywheel, it may take a moment long to get to the RPM that you want and also might response a tad slower to throttle, but when you release the throttle the mass helps to keep the rotating assembly spinning, so between shifts you aren't losing quite as many RPMs as you would with a lightened flywheel which decreases overall rotational mass.

For example - When you shift at 4000rpm with a stock flywheel, you may loose a few hundred RPM whereas in the same situation with a lightened flywheel you may lose over a grand. - This is not exact numerical values, only a strict example.

So the point? Light is great for acceleration, quick shifting, and throttle response. It is not so great for maintaining momentum, however.

 

[zachakagoat]

Lightened flywheels are generally a preference of taste and overall driving. If you are looking for quicker revs and a quicker throttle response while not minding to watch your idle when you press the clutch in then it's a positive thing.

The thing between a lightened flywheel and stock is the overall rotational mass. With the stock, heavier flywheel, it may take a moment long to get to the RPM that you want and also might response a tad slower to throttle, but when you release the throttle the mass helps to keep the rotating assembly spinning, so between shifts you aren't losing quite as many RPMs as you would with a lightened flywheel which decreases overall rotational mass.

For example - When you shift at 4000rpm with a stock flywheel, you may loose a few hundred RPM whereas in the same situation with a lightened flywheel you may lose over a grand. - This is not exact numerical values, only a strict example.

So the point? Light is great for acceleration, quick shifting, and throttle response. It is not so great for maintaining momentum, however.

Completely agree with this. My aluminum fidanza has been a definate change in my driving style but I really enjoy the rev happy nature of the motor, add that to the NLTS of ecmlink and the strip becomes a great playground. The first few runs I had at the autox with it were bad because I lost so may rpm around corners but it also let me feather the throttle easier once I got use to it.

I think if you get one in a kit with your clutch then install it and try it out but otherwise a stock flywheel will feel much more sturdy in your car.

 

[ibreakmytsi]

Well I'm gettin half good and Half bad responses, I think I'll try it out. It's an act street lite also

I'm mainly asking because my trans is shot so I'm replacing it the weekend and had this flywheel sitting around and never ran one before. I've heard launching is a pain

 

[1990dsmkid]

it will be a pain at first until you get use to it. It just takes higher rpms then it would with a stock flyhweel

 

[ibreakmytsi]

Well that's manageable. I just have always wants to try one and was wondering what the real gains are

 

[XiKeiyaZI]

You won't be making any massive HP gains, so don't go about doing it thinking that you'll be running 10's by doing it.

 

[Blurred Talon]

I've got the Fidanza in my car; while I like it, it took a lot of getting use to.
The car still idles fine, 850RPM, that's a none issue.

However getting use to starting off and being quick on the gear changes took a bit of getting used to. I've found if you don't make those gear changes fast the car will stall because the RPM drops so fast.

Having my time back, I wouldn't have gone as light as the Fidanza. IIRC the ACT isn't as light, maybe a better option.

 

[zachakagoat]

I've got the Fidanza in my car; while I like it, it took a lot of getting use to.
The car still idles fine, 850RPM, that's a none issue.

However getting use to starting off and being quick on the gear changes took a bit of getting used to. I've found if you don't make those gear changes fast the car will stall because the RPM drops so fast.

Having my time back, I wouldn't have gone as light as the Fidanza. IIRC the ACT isn't as light, maybe a better option.

I had the same issue with stalling during shifts, almost to the point where it would die in some instances. Adjusting the ISC helped some and a slightly higher idle speed but it still scare me that it might do it going around a corner....

 

[ibreakmytsi]

Is the fidanza the 8.5 pound one?

 

[Paintballaa5]

Don't know what these guys are talking about.. I have a fidanza 8.5lb and it revs a little quicker. Nothing crazy noticeable. It does NOT affect my drive-ability(daily driver) at all. If I were to do my clutch job over again I would probably save the $200 for something else though.

 

[igluna80]

I have the act streetlite on my fwd and I love it, it will stall if you let the revs drop from about 5k but youll just have to get used to engine braking.

 

[Brandon Mau]

My fidanza is the 8LB. version. Like stated the launches take some getting used to. With a stock flywheel I could launch at 4500RPM once I installed the Fidanza, I had to raise it to 5750. Anything lower would cause it to bog down to much off the launch killing my 60ft. times. The revs are quicker though. I have not really had any issues with stalling it though as stated by others. Can't really comment on autocross but for drag racing and D.D only. I believe it's one of those mods where you try it and if it suites your need's then stick with it, If not swap it out for something heavier or remain with a stock one.

 

[igluna80]

I forgot to mention if you already have idle issues youll really notice it with the lightened flywheel

 

[Blurred Talon]

don't know what these guys are talking about.. I have a fidanza 8.5lb and it revs a little quicker. Nothing crazy noticeable. It does not affect my drive-ability(daily driver) at all. If i were to do my clutch job over again i would probably save the $200 for something else though.

ymmv.

 

[untouchablecc]

I have ran the Aluminum Fidanza and the ACT street light. I did not like the Fidanza for daily driving, I found it annoying because of the lack of rotational weight and stalling out coming to a stop. It idled just fine it was just the lowering of the rpm band where it was not as happy. I did like the ACT, It felt like a stock flywheel and really didnt change the driveability of the car. I dont think its really a mod that I would go for again unless I was worring about the stock fly wheel coming apart in a drag racing application. The only reason I purchased the flywheels in the first place were for engine builds where I had not had a flywheel from the start. I agree with taking that 200 and putting it into something else.

 

[bet93]

I had a light weight flywheel on a previous car and it makes quite a difference. You'll definitely be putting a little more effort in to taking off on an uphill. I'd still say its worth it though.

 

[comsoldier20]

I was running a cheap $200ish ebay lightweight flywheel on my 95 AWD talon with a new stock clutch from auto zone. I had no problems. I noticed that acceleration was faster. I think it was an 11 pound. i believe stock flywheel weight is 19 pounds. If I were changing my clutch and needed a new flywheel I would get a lightweight one again.

 

[twicks69]

For reference, you can get an ACT Streetlite or a Competition Clutch Street flywheel for around $225-240 nowadays. Both of these options are 12#.

 

[juntjoo]

I have the act streetlite on my fwd and I love it, it will stall if you let the revs drop from about 5k but youll just have to get used to engine braking.

cant you also just get used to releasing the gas pedal a tad later than normal?

can anyone else confirm that the stock is 19#s?

and with 8 lbs being the lightest, i presume, would a 12lb be a good intermediate step for someone wanting some effect but not too much?

and how do you adjust the idle for this app? thanks!