John,
Ken and I tried of-rings, it didn't work. An o-ring needs a grove to
remain stable, just squeezing them between the head and block tended to turn
them into figure eights. We have had good luck with crushable spark plug
washers and a little high temp silicone. Open the holes in the head gasket
to just accept the washers. This is only good if the holes you want to seal
are relatively small , spark plug diameter or less. This was on a blown
alcohol aluminum block iron head motor. I wish we could take credit for this
but it was suggested by Nick Arias.
Jim in Palmdale
----- Original Message -----
From: "John Burk" <joyseydevil@comcast.net>
To: "LandSpeed List" <Land-speed@autox.team.net>
Sent: Sunday, January 17, 2010 5:21 PM
Subject: [Land-speed] Copper head gaskets
> Sealing around the water holes in Copper head gaskets has been discussed
> before , silicone w/ thread , Copper coat , caskets with beads . Are there
> any
> new tricks or thoughts on the subject ? Has anybody tried oversizing the
> water
> holes in the gaskets and placing o-rings around each hole ?
>
> John
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