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ACmutt 
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Joined: 13 May 2017
Location: Virginia
Points: 19
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 Topic: WD45 copper head gasket
Posted: 15 Feb 2023 at 6:22pm |
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Does anyone know the best place to purchase a copper overbore head gasket?
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Kevin in WA
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Joined: 08 Feb 2010
Location: Lynden, WA
Points: 612
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Posted: 16 Feb 2023 at 10:01am |
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I would check with Clark Copper Gasket
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PaulB
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Joined: 12 Sep 2009
Location: Rocky Ridge Md
Points: 5088
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Posted: 16 Feb 2023 at 10:16am |
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I've always made my own for engines needing them. Get a piece of copper and cut some holes. no big deal.
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If it was fun to pull in LOW gear, I could have a John Deere.
Real pullers don't have speed limits.
If you can't make it GO... make it SHINY
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DrAllis
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Joined: 12 Sep 2009
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Posted: 16 Feb 2023 at 10:31am |
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WHY do we need a copper head gasket for a WD45 ?? Thy don't hold back coolant very well.....like not at all.
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ACmutt
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Posted: 16 Feb 2023 at 12:47pm |
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Dr Allis, what would you recommend for a 4.40 bore, high compression engine?
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DrAllis
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Posted: 16 Feb 2023 at 5:12pm |
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Copper gaskets don't belong on farm tractors and this is the section you are in. Yeah, I've used cooper gaskets over the years and like I say, there is often times water control issues, so use something on it to try and keep the water where it belongs. For years I had to drain my blocks after the last pull of the day and refill with water at the next event to keep the engine oil water free. Disable the radiator cap so it doesn't build pressure. Maybe you'll be lucky and the block won't split down the middle, which forces me to run no coolant, but my bore is bigger. Copper gaskets work best controlling compression when a groove is machined into the top of the block for a wire, which then crushes into the copper gasket for a positive seal. I locate my wire groove on the O.D. of the sleeves edge to the block deck.
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PaulB
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Joined: 12 Sep 2009
Location: Rocky Ridge Md
Points: 5088
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Posted: 17 Feb 2023 at 6:31am |
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When I make a copper head gasket I use O-Rings for all the water and oil holes: NO leaks. I agree, a farm tractor should do just fine with a stock head gasket and not need a copper one.
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If it was fun to pull in LOW gear, I could have a John Deere.
Real pullers don't have speed limits.
If you can't make it GO... make it SHINY
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Oldwrench
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Joined: 12 Jan 2020
Location: Northeast
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Posted: 17 Feb 2023 at 6:42am |
If for any reason you or anyone else does need a copper gasket, this looks like the place to go:
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MACK
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Joined: 17 Nov 2009
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Posted: 17 Feb 2023 at 9:00pm |
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Use original gasket cut to edge of sleeve. Then make steel orings .010 -.015 thicker than head gasket. Use silicon or gasket eliminator around all oil and water holes. Forger the copper. MACK
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ACmutt
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Location: Virginia
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Posted: 18 Feb 2023 at 5:49am |
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👍Will do. Thanks for your help MACK.
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BigGuy1000
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Joined: 06 Dec 2013
Location: NWIL
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Posted: 19 Feb 2023 at 4:29pm |
Dr Allis is right, but you may be interested in the reason why, which he does not explain!!! Copper and iron(steel) are quite far apart in the electromotive series(a measurement of chemical and electrical activity-see Wikipedia) so that in the presence of water when the two metals touch the copper(or brass) is dissolved to copper oxides and sulfates(greenish-yellow). This is not instant, may take years to become obvious, but will eventually be a problem, as I found out when I installed a block heater on AC170 gas! I knew this but had forgotten my chemistry class, too long ago!! This is why the smart plumber who properly installed your hot water heater to a copper line plumbing system installed a special pipe union(a dielectric union) which keeps the two metals from touching!
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