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CC Advertisers
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10-27-2012, 06:20 AM
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CC Member
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Join Date: Mar 2003
Location: South Wales UK,
UK
Cobra Make, Engine: Dax Tojeiro, 450bhp 383 ci Stroker, Tremec TKO and Contemporary CCX, Big Block Ford, old school.
Posts: 99
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Not Ranked
FE Header Gaskets or not?
Hi All,
I'm just wondering whether or not to use header gaskets on the FE or just a bead of RTV?
I'm using individual headers to side pipes rather than the cast iron stock manifolds.
I've read of folks not using gaskets on cast iron manifolds.
I have shiny new and flat faced Edelbrock heads.
Opinions please. 
__________________
Kev Davies, Wales (UK)
CCX-3-4028.445 ci Ford FE
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10-27-2012, 06:31 AM
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Senior Club Cobra Member
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Join Date: Feb 2005
Posts: 651
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Not Ranked
Gaskets for me. I have the same head. In fact I've had iron heads, Shelby alum. heads, and now have Keith Craft alum. heads (Edelbrock casting). Always used gaskets.
David
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10-27-2012, 07:13 AM
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CC Member
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Join Date: Oct 2003
Posts: 4,078
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Not Ranked
It's not even a question; get quality crushable copper gaskets and install them with 1" long header bolts with anti-seize. They will never leak.
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Chas.
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10-27-2012, 07:29 AM
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CC Member
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Join Date: Nov 2007
Location: Clayton,
IN
Cobra Make, Engine: ERA 838
Posts: 1,126
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Not Ranked
Edlebrock header gaskets for me. E-brock heads with side pipe headers. No leadks in 8000 miles.
John
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10-27-2012, 02:58 PM
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CC Member
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Join Date: Mar 2003
Location: South Wales UK,
UK
Cobra Make, Engine: Dax Tojeiro, 450bhp 383 ci Stroker, Tremec TKO and Contemporary CCX, Big Block Ford, old school.
Posts: 99
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Not Ranked
Thanks Guys, I love this place.
__________________
Kev Davies, Wales (UK)
CCX-3-4028.445 ci Ford FE
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10-27-2012, 05:06 PM
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Senior Club Cobra Member
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Join Date: Sep 2000
Location: Holderness, NH, US of A,
NH
Cobra Make, Engine: CSX 4772 old iron FE
Posts: 5,499
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Not Ranked
I like the Mr Gaskets but a good copper gasket with a raised sealing bead is the ticket. Check your flange thickness and bolt depth. A 1" bolt will bottom out on thinner flanges on the bottom (blind) holes.
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10-27-2012, 05:25 PM
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CC Member
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Join Date: Oct 2003
Posts: 4,078
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Not Ranked
Quote:
Originally Posted by mickmate
A 1" bolt will bottom out on thinner flanges on the bottom (blind) holes.
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IIRC, my ERA flanges are 3/8" thick. The 1" bolts did not bottom on my iron MR's and aluminum Shelbys.
It will be worth your while to test one on the flange you have.
__________________
Chas.
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10-28-2012, 07:53 AM
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Senior Club Cobra Member
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Join Date: May 2001
Location: Florence,
AL
Cobra Make, Engine: RCR GT 40 & 1966 Fairlane 390 5 speed
Posts: 4,511
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Not Ranked
I tried copper and the standard paper/metal gaskets and none worked. I now use the Percy's laminated aluminum gaskets. They work!
If your headers flange is warped you can split one gasket and use one and one half on each side.
I have reused them at times and they still work.
Dwight
Exhaust Header and Manifold Gaskets - SummitRacing.com
__________________
''Life's tough.....it's even tougher if you're stupid.'' ~ John Wayne
"Happiness Is A Belt-Fed Weapon"
life's goal should be; "to be smarter than inanimate objects"
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10-28-2012, 09:32 AM
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CC Member
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Join Date: Feb 2007
Location: Colorado Springs,
CO
Cobra Make, Engine: Backdraft, supercharged Coyote
Posts: 2,452
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Not Ranked
I havn't used gaskets in years. Strictly copper high temp silicone. Fit's perfectly, inexpensive, easy to find and buy, and lasts for years. What more could you ask for?
__________________
.boB "Iron Man"
NASA Rocky Mountain TTU #42
www.RacingtheExocet.com
BDR #1642 - Supercharged Coyote, 6 speed Auto
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10-28-2012, 02:51 PM
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CC Member
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Join Date: Jan 2009
Location: Jonesboro,
AR
Cobra Make, Engine: Backdraft 874 solid red Roush 427 small block 515 hp
Posts: 572
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Not Ranked
The factory FE iron head and exhaust manifolds did not require gaskets; tubular headers are only reason for gaskets and everybody has a unique perspective.
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There were no atheists in the foxholes.
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11-01-2012, 06:27 AM
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CC Member
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Join Date: Jul 2004
Location: Eppstein, Germany,
He
Cobra Make, Engine: Actual car: AC Autokraft MK IV with Keith Craft 331. Gone: Home built Crendon, original style twin tube frame, powder coated, stainless sidepipes. FE 433
Posts: 219
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Not Ranked
Used aluminum multi layer gaskets from Percy's on the FE and on the Windsor, both with aluminum heads.
Used copper gaskets with the Cleveland and iron heads.
No leaks at all.
__________________
Everything should be as simple as possible - but not simpler !!
Last edited by westcott cobra; 11-01-2012 at 06:52 AM..
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11-02-2012, 05:25 AM
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CC Member
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Join Date: Apr 2009
Location: Little Rock area,
AR
Cobra Make, Engine: ERA Street Roadster #782 with 459 cu in FE KC engine, toploader, 3.31
Posts: 4,527
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Not Ranked
Well - you all convinced me. I was going with HT silicon sealant but I went ahead and ordered a set of copper gaskets (steel heads). 1 inch ARP header bolts seem to work fine on my ERA headers w/o gaskets - no bottoming. I first tried a 3/4 inch bolt and they were clearly going to be too short.
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11-06-2012, 06:06 AM
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CC Member
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Join Date: Mar 2003
Location: South Wales UK,
UK
Cobra Make, Engine: Dax Tojeiro, 450bhp 383 ci Stroker, Tremec TKO and Contemporary CCX, Big Block Ford, old school.
Posts: 99
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Not Ranked
I eventually went with just Hi Temp Copper RTV and no gasket with 3/42 bolts.
Only time will tell if that's a good call. 
__________________
Kev Davies, Wales (UK)
CCX-3-4028.445 ci Ford FE
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11-06-2012, 06:38 AM
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CC Member
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Join Date: Jun 2002
Location: Canton,
GA.
Cobra Make, Engine: E.R.A. #505
Posts: 216
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Not Ranked
Has any automotive manufacturer ever used RTV as an exhaust gasket? The thousands of gaskets that I have removed over the years (not failed gaskets) have mostly been made of some type of metal, or no gasket at all.
Last edited by tboneheller; 11-06-2012 at 08:28 AM..
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11-06-2012, 08:13 AM
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CC Member
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Join Date: Jun 2000
Location: Cape Town, South Africa/Mainz, Germany,
Posts: 1,601
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Not Ranked
I had no gaskets with 3/8" individual flanges, fitted with studs and APR serrated flange nuts.
I have the feeling that less restrictive sidepipes allow for no gaskets (same for the slip joint: no gasket).
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