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#1
03-27-2023, 08:42 PM
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Aluminum and copper
Quick question, in a nutshell… Is it okay to run copper header gaskets on my shiny new round port aluminum heads?
I think it must be okay since copper cylinder head gaskets are readily available, unless they’re only used with cast iron heads. I seem to vaguely recall some science class jazz about anodes, cathodes and electrolytes and one of the metals slowly “dissolving” (more like pitting) the other. Also remember hearing something about it as more of a maritime concern that boaters talked about. And we all know boaters are largely belligerent drunks anyway, haha. Sent from my iPhone using Tapatalk |
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#2
03-27-2023, 09:45 PM
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If you don't have gaskets yet you might consider Remflex.
They're pretty awesome. |
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#3
03-28-2023, 12:51 AM
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I run Remflex all the time. Takes all of the leaky headers problem away.
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#4
03-28-2023, 01:04 AM
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To answer the question- no problem with copper gaskets against aluminum.
__________________
Anybody else on this planet campaign a M/T hemi Pontiac for eleven seasons? ... or has built a record breaking DOHC hemi four cylinder Pontiac? ... or has driven a couple laps of Nuerburgring with Tri-Power Pontiac power?(back in 1967) |
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#5
03-28-2023, 02:38 AM
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I could tell that there was always just a small amount of exhaust gas getting past the copper gaskets. Not enough to hear but I could see faint soot trails. The good news is the leak never got any bigger so I guess the gaskets were a success. On the street cars my only current choice is Remflex with one set now over a dozen years since installation.
__________________
Mick Batson 1967 original owner Tyro Blue/black top 4-speed HO GTO with all the original parts stored safely away -- 1965 2+2 survivor AC auto -- 1965 Catalina Safari Wagon in progress. |
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#6
03-28-2023, 06:07 AM
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The start of a Exh leak when running headers and a Exh system on the end if them is the headers getting yanked around during engine movement while supporting the Exh system.
A header should not be used to support the front of a Exh system, the head pipes should be supported at the trans crossmember.
__________________
I do stuff for reasons. |
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#7
03-28-2023, 07:48 AM
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That makes sense, but I've never seen it. Can you show what that cross member support would look like?
__________________
I could explain all this to the girl at the parts store, but she'd probably call the asylum. White '67 LeMans 407/TH350/Ford 3.89... RIP Red '67 LeMans. 407/TH400/Ford 3.25 |
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#8
03-28-2023, 08:11 AM
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Remflex and be done, no need for RTV and will not leak.
__________________
1967 Firechicken, 499", Edl heads, 262/266@0.050" duration and 0.627"/0.643 lift SR cam, 3.90 gear, 28" tire, 3550#. 10.01@134.3 mph with a 1.45 60'. Still WAY under the rollbar rule. |
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#9
03-28-2023, 10:39 AM
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Here is a chart that illustrates your concern, .. Dont want to be in the red
__________________
A man who falls for everything stands for nothing. Last edited by Formulas; 12-17-2023 at 10:10 AM. |
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#10
03-28-2023, 10:46 AM
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Quote:
I’m guessing a typical exhaust hanger would work with a little creativity. Sent from my iPhone using Tapatalk |
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#11
03-28-2023, 10:48 AM
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Quote:
This chart says it all! Thank you! Sent from my iPhone using Tapatalk |
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