Lightened Flywheel

Ptoneill · Post by **Ptoneill** » Sat Jun 13, 2015 5:44 pm

Will the lightened flywheel help with the auto transmission platformed cars? i have a 79 2l with 1800 heads, intake and 32/36 carb, mid level street cam, marks electronic ignition and lightweight starter.....

So Cal Mark · Post by **So Cal Mark** » Sat Jun 13, 2015 6:04 pm

the auto cars have a flex plate, not a flywheel

Ptoneill · Post by **Ptoneill** » Sat Jun 13, 2015 7:05 pm

Thanks Mark!! Obviously not something I have a clue about,,that's why I love this forum!!

So Cal Mark · Post by **So Cal Mark** » Sat Jun 13, 2015 7:07 pm

you can always swap in the rear end from a manual trans car for much better acceleration, top end won't be as good though

buckspet · Post by **buckspet** » Wed Oct 14, 2015 6:27 pm

Has anyone had a shop lighten a stock flywheel? If so how much can safely be removed, and what's a estimated cost for the procedure?

131 · Post by **131** » Wed Oct 14, 2015 6:58 pm

buckspet wrote:Has anyone had a shop lighten a stock flywheel? If so how much can safely be removed, and what's a estimated cost for the procedure?

Jason Miller has a good write up about lightening a stock flywheel, about 2/3 down.

http://www.millersmule.com/blog/page/5/

I had a local shop do one for me several years ago, $80 IIRC. Worth the effort even on a stock motor.

bluespider262 · Post by **bluespider262** » Fri Oct 16, 2015 4:35 pm

My $0.02...yeah I know its not a Fiat...but...

I run an aluminum flywheel in the chevy 350 in my offroad jeep.

They are undoubtedly a huge bang for the buck compared to a lot of other hop up parts out there. Highly recommended at your next clutch change (or sooner.

)

Jeep does a lot of low speed idling over rocks and stuff like that. I was worried the aluminum would make it more prone to stalling but that doesn't seem to be the case at all. All pros, no cons.

ScoopMan · Post by **ScoopMan** » Mon Nov 23, 2015 3:13 pm

Just wondering if anyone has ever had any adverse reliability issues with any lightened flywheels. I would be concerned about higher stresses because of less material, and less thermal mass as well. Warping and cracking I do not want....

I tried to link to Jason Miller, but it is not happening...

So Cal Mark · Post by **So Cal Mark** » Mon Nov 23, 2015 8:24 pm

we replaced a stock lightened flywheel for a customer about 2 yrs ago. It had broken completely around the bolt circle, breaking the bell housing when it failed. Many years ago I saw a 57 Chevy that had a lightened flywheel disintegrate at high speed. One broken piece came through the floor, up through the dash and broke the windshield, barely missing the drivers' right leg. After that, I became a believer in aluminum flywheels rather than lightened flywheels. There is so much liability for anyone modifying and selling lightened flywheels that I'm surprised that anyone does it.

ScoopMan · Post by **ScoopMan** » Tue Nov 24, 2015 4:52 pm

I would love to try driving a car with a lightweight flywheel to see how I like it before committing to an installation.

So many varying opinions on this subject. Aluminum has its detractors too. I have read chromoly flywheels might hit the best balance between lightness, strength and stability but no one makes one for the 124 as far as I know. Of course there is always the Guy Croft steel billet one for $900. That is almost as much as I paid for the car

Lightened Flywheel

Re: Lightened Flywheel

Re: Lightened Flywheel

Re: Lightened Flywheel

Re: Lightened Flywheel

Re: Lightened Flywheel

Re: Lightened Flywheel

Re: Lightened Flywheel

Re: Lightened Flywheel

Re: Lightened Flywheel

Re: Lightened Flywheel