Lightweight Flywheel

[mallethead]

Hi all, I am having the stock clutch replaced and the tranny rebuilt. I am putting in a centerforce dual friction clutch, but was wondering about the flywheel. I know about the weight savings which is a huge positive, but has anyone had any bad luck with a lightweight flywheel? Anything I should stay away from? I am assuming (you know how that goes) that lightweight = aluminum...but not 100% sure of this. Any vendors you can recommend? Thanks in advance,

Wayne

[kiwi]

I am going to stay stock....more inertia.

[SVOeric]

the aluminum flywheels tend to have quite a bit of vibrations and noises.

[kiwi]

I have enough vibrations.....oh the car I mean.....

[Kendal Coker]

Basic Flywheel Rules

Lightweight-Round track road racing
Medium (stock steel or cast)- Everyday driving
Heavy- Drag Racing

[DRAGPAK]

I have the 11 lb flywheel and the center fource dual clutch in my car with no problem making 260 rwhp.

[svobud]

I had alum flywheel in my 85 9L ... never had vibrations or issues with it. The 85.5 1B I have now has an alum flywheel as well .. again, no vibrations or issues. You do lose some low rpm - off idle torque, but will gain mid/high end revs as the lighter weight means less effort to reach the same rpms. BTW, the 9L made 365lbs of torque with a stock turbo.

Reducing rotational weight frees up HP transfering thru the drivetrain. Use the SEARCH

Basic Flywheel Rules

Lightweight-Round track road racing
Medium (stock steel or cast)- Everyday driving
Heavy- Drag Racing

Whu? Drag racers use HEAVY flywheels? Since when?

[Kendal Coker]

I had alum flywheel in my 85 9L ... never had vibrations or issues with it. The 85.5 1B I have now has an alum flywheel as well .. again, no vibrations or issues. You do lose some low rpm - off idle torque, but will gain mid/high end revs as the lighter weight means less effort to reach the same rpms. BTW, the 9L made 365lbs of torque with a stock turbo.

Reducing rotational weight frees up HP transfering thru the drivetrain. Use the SEARCH



Whu? Drag racers use HEAVY flywheels? Since when?

Since drag racing began. Keeps the RPM's up. When you launch a car with an alum flywheel it will bog, the heavy one will keep the rpm's up. I ran an automatic flywheel with a 4lb coupler instead of a clutch on my round track car. It spun up good and would throw you through the winshild at the end of the straghtaway. I was not starting from a dead stop.

[svobud]

Since drag racing began. Keeps the RPM's up. When you launch a car with an alum flywheel it will bog, the heavy one will keep the rpm's up. I ran an automatic flywheel with a 4lb coupler instead of a clutch on my round track car. It spun up good and would throw you through the winshild at the end of the straghtaway. I was not starting from a dead stop.

Sometimes it's hard for me to tell if you're kidding or serious ... btw, if you're trying to be serious, then here a big BS warning flag for everyone else.

[Pat_in_L.A.]

He is serious. Drag cars historicallly are built with heavy flywheels for the reasons that Kendal mentioned. YMMV on a 2.3 though.

[svobud]

He is serious. Drag cars historicallly are built with heavy flywheels for the reasons that Kendal mentioned. YMMV on a 2.3 though.

When you say historically, do you mean cars from 30+ yrs ago? Or only when you're chosing to drag race a historical 5000lb car?

[Kendal Coker]

Flywheel information.

http://www.thunderracing.com/catalog/?action=vshop&vid=13&pcid=160

[svobud]

Flywheel information.

http://www.thunderracing.com/catalog...id=13&pcid=160

wow ... you really did use a marketing/catalog product discription to tell me what I already SAID! Heck, why do we even need to discuss products from now on? ... I say we recommend people to contact you for relevant online catalog links. Obviously, you and them both know ya'lls shiiit.

[schlot]

I would think with a lighter flywheel a boost releif valve/bypass valve is more critical, as the engine would slow down even quicker than a stock one?

[mallethead]

Thanks for the spirited discussion everyone. I have decided to go with a ""Best of Both Worlds" Flywheel. I ordered a Fidanza 12 pound Stainless Steel clutch. Lighter than stock, but heavier than aluminum.