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Flywheel lightening 

 

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 Post subject: Flywheel lightening
Posted: Tue Aug 04, 2009 11:39 pm 
Parts Gopher
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Age: 52

Posts: 74

Joined: 9th Dec 2007

Ride: EL Fairmont Ghia

Location: South Coast
NSW, Australia

Hi,

I'm converting my 5.0 EL Fairmont Ghia to 5 speed. I got a flywheel with the gearbox I bought but after the learning curve I had over whether the box was the right one I thought I'd ask a couple questions about the flywheel before I pull the auto out.

Is there a difference between the E series 8cyl and 6cyl flywheels?

Is there a difference between the E series 8cyl and the AU 8cyl flywheels?

Depending on the answers to the above can you lighten a E series/AU flywheel. The one place I called reckons that some flywheels are internally balanced and some are externally balanced and that can determine whether you can take a little weight off or not.

I'm planning on having a motor with a torquey cam (1500-5500) probably a Comp Cams NX264HR.

The way I understand it, a little off the flywheel will sharpen upthe throttle response.

Cheers

 

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'97 V8 EL Ghia Webasto 400 sunroof, Tint, Parnell VSI LPG, UPC 330mm brake upgrade (drilled), Pacemaker twin system, T5 conversion (Billet Products shifter)

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 Post subject: Re: Flywheel lightening
Posted: Wed Aug 05, 2009 11:51 am 
Getting Side Ways
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Ride: DCII LTD V8

Location: Dunedin
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It will shapen up the throttle response but you will lose torque. And yeah i'm pretty sure E/AU are the same. my advice, grab a yella terra billet flywheel, can either buy pre lightened or standard weight. I bought a YT9909 standard weight flywheel from them. Good stuff.

 

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1993 LTD V8 Oregon 5 speed "click me"

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 Post subject: Re: Flywheel lightening
Posted: Wed Aug 05, 2009 3:10 pm 
Getting Side Ways
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Location: Melbourne
VIC, Australia

The reference to internal or external balancing is to do with the engine.
The I6's are naturally balanced so the the fly wheel is a uniformly weighted disc.
The Ford V8's need the flywheel to be out of balance to help balance the engine.
I dont know if they are the same from 'E' to 'A'.
A quick call to your local ford spare parts should sort that out.

 

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EL Fairmont Ghia - Manual - Supercharged
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 Post subject: Re: Flywheel lightening
Posted: Wed Aug 05, 2009 5:24 pm 
Parts Gopher
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Age: 52

Posts: 74

Joined: 9th Dec 2007

Ride: EL Fairmont Ghia

Location: South Coast
NSW, Australia

Cheers boys. Now Im getting somewhere.

Image

So that heavier section is to offset the out of balance crank etc? Got it.
So do you reckon the total weight is important? Cause if I machine the thing in such a way that I dont go over those drilled holes that I assume are there from the wheel being "balanced" then I can reduce the weight without upsetting the balance ratio.

Given that, can I machine some weight from the other side of the flywheel or is that a big no-no?

Cheers

Edit: Have I got the right flywheel for my V8 EL gearbox??

 

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'97 V8 EL Ghia Webasto 400 sunroof, Tint, Parnell VSI LPG, UPC 330mm brake upgrade (drilled), Pacemaker twin system, T5 conversion (Billet Products shifter)

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 Post subject: Re: Flywheel lightening
Posted: Wed Aug 05, 2009 5:57 pm 
Getting Side Ways
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Joined: 21st May 2005

Location: Melbourne
VIC, Australia

Any removal of material would require the flywheel to be rebalanced.
Steel isn't uniform in density.

 

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EL Fairmont Ghia - Manual - Supercharged
- The Car
- The Headlights

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