Copper Hedder Gasgets... any good? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**'68OrangeSunshine** · 10-17-2011, 03:19 AM

The collector gaskets aft of my Headman headers have burned thru. Probably paper I don't remember. Anyway puffs of hot air are leaking past the collector junction.
I bought some copper gaskets, Mr Gasket, I think. I'm gonna try 'em.
Vehicle is '71 GMC Jimmy: 350 V8 [stock Mr Goodwrench, c.1999] Carter 9625 AFB 600 CFM, Weiand 8004 intake, Heddman Hedders, dual exhaust, H-Pipe, turbo mufflers. SM465/NP205, 3.73 Auburn Posi 12-Bolt Corp rear.

donut · 10-17-2011, 06:33 AM

Yes, they're good.

That being said, if your flanges don't fit good (gaps, dents, old gasket...) you'll be hard pressed to get anything to seal permanently.

**'68OrangeSunshine** · 10-17-2011, 06:31 PM

Good point. I'll get back to you on how well they work.

jcis4me · 10-19-2011, 12:26 AM

I had the same problem with paper gaskets I used permatex high temp copper silicone and no more leaks so far a year later and over 10k miles.
Aloha
Marty

KQQL IT · 10-19-2011, 12:29 AM

Percys make a thicker aluminum gasket that may help. Their header gaskets are very nice and fogiving to.
Posted via Mobile Device

fastwillie 696969 · 10-19-2011, 01:50 AM

http://www.percyshp.com/Seal4Good.html dead soft gaskets AWESOME

10-17-2011, 03:19 AM	#1
'68OrangeSunshine Senior Member Join Date: Feb 2002 Location: Tucson, AZ USA Posts: 7,160	Copper Hedder Gasgets... any good? The collector gaskets aft of my Headman headers have burned thru. Probably paper I don't remember. Anyway puffs of hot air are leaking past the collector junction. I bought some copper gaskets, Mr Gasket, I think. I'm gonna try 'em. Vehicle is '71 GMC Jimmy: 350 V8 [stock Mr Goodwrench, c.1999] Carter 9625 AFB 600 CFM, Weiand 8004 intake, Heddman Hedders, dual exhaust, H-Pipe, turbo mufflers. SM465/NP205, 3.73 Auburn Posi 12-Bolt Corp rear. __________________ Every 25 years I like to rebuild that 292, whether it needs it or not. Last edited by '68OrangeSunshine; 10-17-2011 at 03:24 AM.

10-17-2011, 06:33 AM	#2
donut Registered User Join Date: Aug 2009 Location: S.C. Posts: 1,593	Re: Copper Hedder Gasgets... any good? Yes, they're good. That being said, if your flanges don't fit good (gaps, dents, old gasket...) you'll be hard pressed to get anything to seal permanently. __________________ '86 C-30 dually, 454/tbh400 '73 K-20 350/350/205 (sold ) I'm kinda like duct tape- no real purpose, but handy to have around.

10-17-2011, 06:31 PM	#3
'68OrangeSunshine Senior Member Join Date: Feb 2002 Location: Tucson, AZ USA Posts: 7,160	Re: Copper Hedder Gasgets... any good? Good point. I'll get back to you on how well they work. __________________ Every 25 years I like to rebuild that 292, whether it needs it or not.

10-19-2011, 12:26 AM	#4
jcis4me Registered User Join Date: Aug 2010 Location: Jersey shore Posts: 115	Re: Copper Hedder Gasgets... any good? I had the same problem with paper gaskets I used permatex high temp copper silicone and no more leaks so far a year later and over 10k miles. Aloha Marty

10-19-2011, 12:29 AM	#5
KQQL IT At the body shop. Join Date: Aug 2009 Location: Land of fruits and nuts. Posts: 5,181	Re: Copper Hedder Gasgets... any good? Percys make a thicker aluminum gasket that may help. Their header gaskets are very nice and fogiving to. Posted via Mobile Device __________________ " That didnt make it any newer " " Dont antique the equipment "

10-19-2011, 01:50 AM	#6
fastwillie 696969 ~Rest In Peace~ Join Date: May 2005 Location: CALIFORNIA NOR CAL Posts: 9,707	Re: Copper Hedder Gasgets... any good? http://www.percyshp.com/Seal4Good.html dead soft gaskets AWESOME __________________ is it fast ? it has a lighting bolt donut? B___H please, I can remove 90% of your so called "beauty" with a kleenex



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