Stock 124 Flywheel

[MIGHTY 8]

Hello,
With respect to the aftermarket lightened flywheels available, what does a stock flywheel weigh?

Thanks

[maytag]

Hello,
With respect to the aftermarket lightened flywheels available, what does a stock flywheel weigh?

Thanks

18-19 lbs... "ish".

but it also carries that weight in all the wrong places (just like me)

[MIGHTY 8]

You are hilarious!
Thanks, just got mine in from Miller's Mule and am excited to get it replaced. It's "only" about 4-5 lbs. (advertised as weighing 14 lbs.) less then stock, but I sure hope I can feel the difference.

[BEEK]

you will feel the difference immediatly... 4-5 lbs? total weight? if jason can make me one that light im in,

[MIGHTY 8]

you will feel the difference immediatly... 4-5 lbs? total weight? if jason can make me one that light im in,

"Negative GhostRider, the pattern is full."

14 lbs. TOTAL weight....I'd hate to pass along misinformation!

[maytag]

so, as Jason has explained o his site (and onthis forum from time-to-time), it;s all about the moment of inertia. It;s all about where that 14 pounds is kept. You will notice that he removes as much material as he feels he can, as far out towards the outside of the circle as possible. the less mass there is on the outside of that circle, the less energy is required to get that mass turning.

you'll notice it.

[BEEK]

i have a 12lb steel flywheel that i made years ago, like over 20.. it has survived many race car applications and 100k on the street, the flywheel is 10mm thick all over, 10mm was the thinnest place the factory had at the crankshaft mounting position, therfor i assumed that this thickness would be good for the entire assembly, ... so far so good

[fiat218]

Hello,
With respect to the aftermarket lightened flywheels available, what does a stock flywheel weigh?

Thanks

18-19 lbs... "ish".

but it also carries that weight in all the wrong places (just like me)

Are u fat

[Daniel]

I thought the stock flywheel weight was 22 lbs ?

[pastaroni34]

I thought the stock flywheel weight was 22 lbs ?

There are many different weights as there are many different flywheels. You will find Fiat stock weights will range from about 18lbs to 22lbs (most closer to 21lbs). This depends on many factors, flywheel diameter, ring gear thickness, factory lightening, clutch type (Volumex is different)

Personally I prefer to keep the flywheel minimum thickness to 12mm at the friction surface. This is not only because of strength and pitting in the castings, which I have documented but because of a flywheel's heat capacity. When the clutch slips (as it does during shifting) friction is turned into heat, which has to be stored somewhere -- in the flywheel. A flywheel too thin has a lesser heat capacity, and is more prone to hot spots, which cause hard spots, and eventually cause stress cracking.

Anyway, thats all for lightened OEM flywheels. If you want one made from scratch from steel, 6lbs isn't difficult to achieve but thats a totally different animal.

[BEEK]

you definatly have some very nice parts, i lust for many of them. once i get my machine shop up and running. automotive, not fabricating. i hope to generate enough expendable income to make a large order. i found a need in my area for a auto machine shop capable of rebuilding cylinder heads. so im filling that need. already purchased most all of the machines needed. should be up and running within a month

[MIGHTY 8]

As the original poster of this thread, I apologize for not being more specific with my question. I forgot to factor the different size engines used throughout the production run of our spiders and the changes in flywheel weight associated with it.
I have an '80 year (2L), so I suppose it comes closer to thoe 22lbs. Those 8 lbs. sure now sound a lot more appealing then the previous 4-5!
I'll be taking her in on Tuesday to have it installed.
Thanks again to all for your input!

[joelittel]

Was there a significant difference?

[SLOSpider]

Anyone know where I can get a Henway?

[fiat218]

Anyone know where I can get a Henway?

Nope,but a henway( s) 4 to 5 pounds,.hope that helps