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SEALING HEADERS TO HEAD |
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6768rogues
AMC Addicted Joined: Jul/03/2007 Location: United States Status: Offline Points: 6237 |
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I tried copper, they leaked on the first day.
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Content intended for mature audiences. If you experience nausea or diarrhea, stop reading and seek medical attention.
Located usually near Rochester, NY and sometimes central FL. |
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rang-a-stang
AMC Nut Joined: Sep/25/2018 Location: Camarillo, CA Status: Offline Points: 272 |
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I have cheapie Hedman's on my Cherokee and fought sealing them as well. I bought Remflex PN 1001 and they have held well since. I have also port matched my headers and heads to the gaskets but they still seal with the Remflex gaskets.
Honestly, if the Remflex gaskets are not sealing, I would spring the $210 for a new set of Hedmans. When they show up, toss the Hedman gaskets in the trash, bolt on your new headers with new Remflex and be done with this.
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79 Cherokee, 401
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WesternRed
AMC Addicted Joined: Aug/03/2010 Location: Australia Status: Offline Points: 5799 |
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After you fix the poor alignment of the header flange with the exhaust ports of course.
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I've finally given up drinking for good...........now I only drink for evil.
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rang-a-stang
AMC Nut Joined: Sep/25/2018 Location: Camarillo, CA Status: Offline Points: 272 |
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I mean, it’s a plow truck. If it were mine, I would just replace the headers and gaskets. The Hedman ports are so bad and it’s gonna spend it’s life below 3k RPM so I would just run it. On my crappy headers, the ports were aligned, just really poorly welded at the flange, blocking a solid 30% of the port but I would still just run it on a stock 360.
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79 Cherokee, 401
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WesternRed
AMC Addicted Joined: Aug/03/2010 Location: Australia Status: Offline Points: 5799 |
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Here is a blown header gasket I took off a couple of weeks ago, you can clearly see how uneven the clamping is around the ports, so it's hardly surprising people have trouble getting headers to seal:
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I've finally given up drinking for good...........now I only drink for evil.
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rang-a-stang
AMC Nut Joined: Sep/25/2018 Location: Camarillo, CA Status: Offline Points: 272 |
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GARBAGE!!! hahahahahaha!!!! I guess we get what we pay for when we buy a set of brand new headers that are $200 delivered!!!
Here is a thread when I first ground on my headers to clean up the ports: As a testament to the Remflex gaskets, these pictures were taken AFTER the grinding in the above thread and a couple hundred miles. I had no leaks but notice the carbon witness marks wrap all the way around the weld bead. These 2 were BY FAR the worst but the other 6 ports needed some more love, too. I ran a new weld bead around the witness marks and opened them even more after these pictures were taken. What a POS set of headers!!!
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79 Cherokee, 401
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JERSEYJOE
AMC Addicted Joined: Oct/23/2008 Location: TUG HILL NY Status: Offline Points: 1716 |
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Took the headers off and I am running stock manifolds with one Borla muffler. Much better. I did use the Remflex gaskets on my AMX project and they seem to be sealing well, but I did touch up the flanges first.
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1985 J-20 PLOW TRUCK
1977 CJ 7 360 T-18 D 300 1970 AMX ex-SCCA car SPEED COSTS MONEY HOW FAST DO YOU WANT TO GO? |
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