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Author
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Topic: Cooper sealant on headers
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Fastymz
Moderator Posts: 18703
From: Reno Nv USA MEM#1240
Registered: Apr 2001
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posted 03-09-2003 07:40 PM
   
I can't find the orange sealant for my headers anywere,but pepboys and the package says it's good to 650degrees.The high heat cooper stuff I have at home says it works to 750.Is there better stuff then the copper out there?P.S.dont make fun of my spelling of copper either. ------------------
SCOOP
oddly obsessed with big scoops on little Mustangs 2.26 60'S
14.9 @ 90.86MPH 65 coupe,351w,C4,Big Boss 429 hood scoop,8"3.40 TracLoc,Cragar SS,Black Suede. https://mustangsandmore.com/ubb/Fastymz.html
[This message has been edited by Fastymz (edited 03-09-2003).]
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64FalconF-16
Gearhead Posts: 196
From: Republic Of Texas!! Temporarily living in KY
Registered: Feb 2002
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posted 03-09-2003 09:06 PM
Ron,you should not have to use a sealant at all unless you are doubling up on gaskets. Use this tried and trued effort.
Header to Head:
INstall the gaskets and tighten. Run car to operating temp. Let cool overnight. retighted before starting up.
repeat this two more times and your gaskets should be fine and last a long time. Collector gaskets do require sealants. IMO you can use the copper sealant. Better yet use the soft copper gaskets and use no sealants at all!!!
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Fastymz
Moderator Posts: 18703
From: Reno Nv USA MEM#1240
Registered: Apr 2001
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posted 03-09-2003 09:19 PM
I have the alum collector gaskets they seem to work good.
I just asked about the headers to heads gasket sealant because I read in some old post to use alittle orange sealant.And I noticed the old gaskets I took off both sides the rear ports had some signs of blow by.My headers have the raised welded rings on them where they go to the heads.I wonder if that does not allow for a flat fit.They are hedmen headers not the most expensive but they work. 
And thanks for not saying anything about my spelling of the word Copper,"cooper".------------------
SCOOP
oddly obsessed with big scoops on little Mustangs 2.26 60'S
14.9 @ 90.86MPH 65 coupe,351w,C4,Big Boss 429 hood scoop,8"3.40 TracLoc,Cragar SS,Black Suede. https://mustangsandmore.com/ubb/Fastymz.html
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Rory McNeil
Gearhead Posts: 1542
From: Surrey, B.C. Canada
Registered: Nov 2000
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posted 03-10-2003 01:51 AM
I also have a pair of cheap Hedman headers on my 302 Fairmont, with early 351W heads. I installed the headers with nothing on the Mr. Gasket regular white header gaskets almost 10 years ago,& they have never leaked.I snugged the bolts every day for about a week, after driving the car. after a few days, the bolts never seemed to need tightening anymore, & I left them alone. Once or twice a year, I check them again, but they still seem tight. If a header gasket is going to leak, no amount of sealer will hold in hot exhaust gases under pressure. I don`t put anything on header gaskets, with no complaints.------------------
78 Fairmont 428 4 speed 10.20@130mph
80 Fairmont 302 5 speed 12.8@105mph
85 Mustang NHRA Stocker under construction, 302 5 speed
59 Meteor (Canadian Ford) 2 dr sedan 332, auto
74 F350 ramp truck 390 4spd
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rockafellz
Gearhead Posts: 1426
From: San Lorenzo, CA, USA
Registered: Aug 2001
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posted 03-10-2003 11:11 AM
Hooker Supercomps with Mr. Gasket header gaskets. No sealant used per M&M user's recommendations.  Retighten after use twice, three times if you want to make sure. Erik ------------------
1966 Ford Mustang 2+2
Mine - Restomod in Progress 1966 Ford Mustang Coupe
Dad's - Original Unrestored
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