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 1Likes
06-06-2009, 02:13 PM
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CC Member
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Join Date: Mar 2001
Location: Provo,
Ut
Cobra Make, Engine: Kirkham, 427
Posts: 6,990
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Neutral
New! Kirkham 427 FE Billet Flywheel Twin Clutch
Fellow Car Nuts:
As the automotive industry stinks right now, and we probably won't get a bail out, we decided to go into the dairy industry and make Swiss Cheese 
In the never ending quest to remove weight from the car, Sandwich and Thomas got together yesterday and created a little more eye candy for all of us. This is our new Billet Aluminum 427 FE flywheel and pressure plate assembly. The twin-disk clutch unit is from McLeod. They didn't have an FE flywheel for the set up, so we figured we'd make one.
Removing mass from around the outside of the flywheel is more important the mass from the inside as the outside mass has a greater moment of inertia. Anyone who has driven an FE with a steel flywheel knows how nice it is to remove some of that weight. Your motor spins up MUCH faster, making it so much easier to shift gears quickly. Frankly, I can't stand to drive a car with a steel flywheel--they take way too long to rev up so you are always waiting to shift gears.
Last edited by David Kirkham; 06-06-2009 at 02:41 PM..
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06-06-2009, 02:15 PM
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CC Member
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Join Date: Mar 2001
Location: Provo,
Ut
Cobra Make, Engine: Kirkham, 427
Posts: 6,990
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Neutral
Since it is easier to put our cars on Weight Watchers than ourselves...
We figured while we were at it, we'd remove a little of the "extra" aluminum.
Last edited by David Kirkham; 06-06-2009 at 02:22 PM..
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06-06-2009, 02:16 PM
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CC Member
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Join Date: Mar 2001
Location: Provo,
Ut
Cobra Make, Engine: Kirkham, 427
Posts: 6,990
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Not Ranked
This set up is for a Tremec TKO 600
Last edited by David Kirkham; 06-06-2009 at 02:23 PM..
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06-06-2009, 02:18 PM
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CC Member
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Join Date: Mar 2001
Location: Provo,
Ut
Cobra Make, Engine: Kirkham, 427
Posts: 6,990
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Not Ranked
Here you can see the twin clutch disks.
Last edited by David Kirkham; 06-06-2009 at 02:25 PM..
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06-06-2009, 02:23 PM
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CC Member
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Join Date: Mar 2001
Location: Provo,
Ut
Cobra Make, Engine: Kirkham, 427
Posts: 6,990
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Not Ranked
Now for the good stuff..
This entire set up 23.76 pounds!
Last edited by David Kirkham; 06-06-2009 at 02:27 PM..
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06-06-2009, 02:25 PM
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CC Member
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Join Date: Mar 2001
Location: Provo,
Ut
Cobra Make, Engine: Kirkham, 427
Posts: 6,990
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Not Ranked
This is the original type set up with a steel flywheel and normal pressure plate. It weighs 65.85 pounds for a 42.09 pound savings! Our new set up is about 1/3 the weight. No wonder the original cars reved up so slowly.
Last edited by David Kirkham; 06-06-2009 at 02:43 PM..
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06-06-2009, 02:27 PM
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CC Member
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Join Date: Mar 2001
Location: Provo,
Ut
Cobra Make, Engine: Kirkham, 427
Posts: 6,990
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Not Ranked
41.06 pounds for the steel flywheel. This is what makes putting them on so dangerous. I am always wondering if I am going to drop it on my foot.
Last edited by David Kirkham; 06-06-2009 at 02:31 PM..
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06-06-2009, 02:30 PM
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CC Member
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Join Date: Mar 2001
Location: Provo,
Ut
Cobra Make, Engine: Kirkham, 427
Posts: 6,990
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Not Ranked
At 17.60 pounds, a normal aluminum flywheel is less than 1/2 the weight of the steel moster. Now you know why the aluminum ones are so popular. We recommend everyone runs an aluminum flywheel--especially if it is one of ours
Last edited by David Kirkham; 06-06-2009 at 02:44 PM..
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06-06-2009, 02:34 PM
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CC Member
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Join Date: Mar 2001
Location: Provo,
Ut
Cobra Make, Engine: Kirkham, 427
Posts: 6,990
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Not Ranked
42.38 pounds for the aluminum flywheel and pressure plate assembly...still quite heavy--but a vast improvement over the 65.85 pound clutch from the M1 Tank.
Our new flywheel and pressure plate set up, however, is almost 1/2 the weight of the standard "lightened" aluminum set up. Time for testing...I have a tough job, but someone has to do it.
David
Last edited by David Kirkham; 06-06-2009 at 02:45 PM..
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06-06-2009, 02:35 PM
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CC Member
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Join Date: Dec 2002
Cobra Make, Engine: KMP
Posts: 790
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Not Ranked
..... and my kids were just asking me what I want for Father's Day..... 
__________________
Lew
I'm no expert. 
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06-06-2009, 03:26 PM
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Half-Ass Member
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Join Date: Jun 2005
Cobra Make, Engine: ERA #732, 428FE (447 CID), TKO600, Solid Flat Tappet Cam, Tons of Aluminum
Posts: 22,000
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Not Ranked
David, that is very cool. Removing the extra aluminum from the perimeter of the circle doesn't weaken it for starter motor purposes? Or is the amount of stress put on it while cranking really just not enough to matter?
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06-06-2009, 04:27 PM
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CC Member
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Join Date: Aug 2003
Location: San Diego,
CA
Cobra Make, Engine: BDR #455, KC427W, TWM-FI
Posts: 727
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Not Ranked
Got one for a small block?
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06-06-2009, 05:07 PM
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Senior Club Cobra Member
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Join Date: Dec 2003
Location: BAKERSFIELD,
CA
Cobra Make, Engine: KMP241 427 S/C 482 Shelby
Posts: 483
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Not Ranked
David,,,,,,,Looks great, but I need help with my hood scoop........Ron
__________________
RON N BKFLD
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06-06-2009, 05:35 PM
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CC Member
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Join Date: Aug 2003
Location: San Diego,
CA
Cobra Make, Engine: BDR #455, KC427W, TWM-FI
Posts: 727
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Not Ranked
David,
I was thinking it might look like this:
It would save weight and ...well I don't know what else it would do once it was installed, cus no one would see it. But if you think of it like a girlfriend, you know what she has under her clothes and that counts for something 
Rob |
06-06-2009, 05:47 PM
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CC Member
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Join Date: Sep 2007
Location: Dillon,CO / Daytona,FL,
CO
Cobra Make, Engine: Kirkham 482 FE, Pond Aluminum, CNC ported heads
Posts: 63
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Not Ranked
__________________
May You Stay Forever Young
Rollinggeorge 
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06-06-2009, 06:51 PM
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Senior Club Cobra Member
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Join Date: Jun 2007
Location: Covington,
wa
Cobra Make, Engine: Superformance # 532, 466 BB, 560HP
Posts: 3,027
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Not Ranked
Damn fine job. 
__________________
John Hall
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06-06-2009, 06:56 PM
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Senior Club Cobra Member
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Join Date: Jan 1999
Location: MARKSVILLE,LA.,,
Posts: 3,235
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Not Ranked
Quote:
Originally Posted by Rwillia4
Got one for a small block?
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I was thinking the same thing!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
David
__________________
DAVID GAGNARD
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06-06-2009, 07:48 PM
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CC Member
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Join Date: Jul 2000
Location: Shreveport,
LA
Cobra Make, Engine: CSX4083, NOS 427 SOHC, serial number 589. Dyno'd in 1967 at 629HP with single 4v 560 Holley. Now with 4 Webers.
Posts: 295
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Not Ranked
Horsepower rating?
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06-06-2009, 08:15 PM
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CC Member
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Join Date: Feb 2006
Location: Gilroy,
CA
Cobra Make, Engine: SPF 2291, Whipple Blown & Injected 4V ModMotor
Posts: 2,719
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Not Ranked
David,
Very nice work as usual!
Did my eyes deceive me or did I see sintered iron discs in that uber light assembly? Two more questions; which McLeod pressure plate is that and how much plate load does it provide.
Thanks - especially for the inspiration, again and always.
Ed
__________________
Help them do what they would have done if they had known what they could do.
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06-06-2009, 08:20 PM
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CC Member
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Join Date: May 2009
Cobra Make, Engine:
Posts: 135
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Not Ranked
Any concerns with strength or durability with the super light flywheel? Is it enough flywheel to idle?
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