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Old 03-05-2004, 05:36 PM   #1
2.2gotboost
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Default Does anyone know if there is a lightened flywheel that weighs between 17-20 lbs?

I am looking for a flywheel that is not less than 17 lbs. Excedy, Fidanza both are less than 15. Anybody know of one that is a little heavier? Thanks John
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Old 03-09-2004, 11:02 AM   #2
racinready300ex
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I'm looking for the same thing, but I've yet to find anything. I don't think one exists
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Old 03-09-2004, 11:29 AM   #3
mbiker97
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STi? The Fidanza is too light but the Exedy should be fine.
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Old 03-09-2004, 11:33 AM   #4
Safir
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if you only want to loose a few pounds like that look for a competent machine shop to remove excess material from your stock flywheel
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Old 03-09-2004, 06:33 PM   #5
2.2gotboost
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I have been told by others that a lightened flywheel is a bad idea because of the mountainous region in which I live. ACT has the heaviest aftermarket flywheel I can find. Excedy and Fidanza are both real close in weight (12Lbs.). You will be surprised how many vendors don't tell you the weight of these flywheels.

The machine shop thing I have already thought of, but that is just it finding a machine shop that can machine it and maintain the balance.

At this point I am going to resurface the stocker and put in the new clutch. John
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Old 03-09-2004, 07:08 PM   #6
PeterJ
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Quote:
ACT has the heaviest aftermarket flywheel I can find. Excedy and Fidanza are both real close in weight (12Lbs.). You will be surprised how many vendors don't tell you the weight of these flywheels.
So what is the actual weight of the ACT [and for what model car]?
Im thinking of having a stock flywheel lightened... A mechanic at a nearby dealer gave me a flywheel out of the trash, but I have no idea what it belongs too.
As far as balancing, if the shop is an automotive machine shop and they resurface flywheels and work on pistons and rods and such, then they will definately have a balancing machine, or send it to someone who does.
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Old 03-09-2004, 07:41 PM   #7
BAC5.2
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What are the negatives of a lightweight flywheel for mountain driving? Just that the revs climb and fall to fast? I'll be looking to get a new flywheel when my clutch dies.
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Old 03-09-2004, 08:23 PM   #8
2.2gotboost
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ACT for WRX weighs around 14Lbs.

I was told the drawback was having to rev the car to like 5000 rpm's to take off. It seriously affected the driveabilty so bad he changed it back to stock. I am not going to risk it for a little more performance. Just got to get rid of that crappy stock clutch. John
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Old 03-22-2004, 06:54 AM   #9
Subahaulic
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My new Act Streetlite fw did not significantly degrade drivability--the quicker reving is especially nice for mountain driving. Mine can be lugged off the line at low rpm's, even in 2nd gear. This is w/ a taller than stock 1st and a VF22.

The big downside is more deceleration NVH due, in part, to my hardened STi tranny and motor mounts and shifter bushings.
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Old 03-24-2004, 01:28 AM   #10
chileewili
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The downsides of running a lighter flywheel is that you'll probably lose a mpg or two running highway, and that you'll run up and down the rev's quicker (which can be a good thing or a bad thing depending on perspective) -but isn't that what you're going for with a lightened flywheel? the quicker rev's? You'll also be likely to have a slightly rougher idle, that's why many manufacturers use a dual-mass flywheel.
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Old 03-24-2004, 10:55 AM   #11
cdvma
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Too light and you remove mass from the crank and rotating parts that will no longer absorb harmonic forces and you will throw misfire codes, so lighter isn't always better.
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Old 03-24-2004, 06:13 PM   #12
mbtoloczko
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Quote:
Originally posted by 2.2gotboost


.... Excedy and Fidanza are both real close in weight (12Lbs.)...

My Exedy lightweight flywheel weighs 13.5 lbs. I weighed it myself.
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