Copper vs OEM exhaust manifold gasket
Copper vs OEM exhaust manifold gasket
Which do you use on your B Series? I'm looking at the SCE copper one piece gasket. Or the OEM Multi layer Type r Gasket (p30). I was reading the copper gaskets not only seal better but keep heat in the manifold so as to keep the head temps cooler and insulated. BS? idk.
RTFM
Joined: Jun 2002
Posts: 7,267
Likes: 4
From: Conroe, TX
Re: Copper vs OEM exhaust manifold gasket
Which do you use on your B Series? I'm looking at the SCE copper one piece gasket. Or the OEM Multi layer Type r Gasket (p30). I was reading the copper gaskets not only seal better but keep heat in the manifold so as to keep the head temps cooler and insulated. BS? idk.
Copper conducts heat at a rate about ten times that of steel. Its NOT keeping heat anywhere. I can see it sealing better though as it is softer and deforms easier.
Re: Copper vs OEM exhaust manifold gasket
I've never had a problem with a factory one sealing, even after going on and off a couple of times, so "better" sealing has no value to me. Getting off that crud that a one-piece gasket leaves behind, on the other hand...
Honda-Tech Member
Joined: Jul 2006
Posts: 2,817
Likes: 5
From: Kansas
Re: Copper vs OEM exhaust manifold gasket
Use a factory gasket. Keeping head temperature cool has a lot more to do with A/F ratios, and cooling system turnover, than a gasket.
Heat flows to areas of lower temperature, so conduction is not desirable, the same way it is not desirable on the intake. Again, use a factory gasket or a comparable (hopefully less than $25) gasket.
Heat flows to areas of lower temperature, so conduction is not desirable, the same way it is not desirable on the intake. Again, use a factory gasket or a comparable (hopefully less than $25) gasket.
Hysterically Calm
Joined: Jan 2013
Posts: 10,439
Likes: 597
Re: Copper vs OEM exhaust manifold gasket
Also I believe copper and aluminum with moisture can cause challenges. Especially if you live by the ocean.
Heat is just going to be an enabler in the situation too.
Q. We would like to know the galvanic effect when we have a bolted joint Aluminum-copper, maybe there is a table experience or calculated values data.
Thanks for your help.
Gonzalo Ramirez
- Mexico city, Mexico
+
A. Aluminum will be very susceptible to galvanic corrosion in contact with copper, assuming that the two metals are also in contact with a common electrolyte (such as water with some ionic content.) Almost any text or handbook on corrosion will have galvanic series table. The farther two metals or alloys are separated on the table, faster the corrosion of the less noble of the two will be when they are in contact.
Larry Hanke
materials testing laboratory
Minneapolis, Minnesota
Thanks for your help.
Gonzalo Ramirez
- Mexico city, Mexico
+
A. Aluminum will be very susceptible to galvanic corrosion in contact with copper, assuming that the two metals are also in contact with a common electrolyte (such as water with some ionic content.) Almost any text or handbook on corrosion will have galvanic series table. The farther two metals or alloys are separated on the table, faster the corrosion of the less noble of the two will be when they are in contact.
Larry Hanke
materials testing laboratory
Minneapolis, Minnesota
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