[Supras] valley plug removal

[berniek at technicaldevelop.com]

Dear Rocky:

    I finally got around to really trying to remove the plugs with a punch and hammer as you suggested.  These plugs must really be tough as I have a crater at 45 degrees to the head plane in one plug formed by really laying into it with a pointed punch and a 3 # hammer.  After smoothing the top with a grinder, I guess I'll go back to my silicone rubber gasket approach, with 5/16-18 bolts to hold thick 50 durometer silicone down fender washers abd bolts in the center of the plug hexes.

    These plugs absolutely refuse to move.  I rounded out the hexes wiith a 3/4" impact wrench.  You were probably lucky.  I soaked the plugs in penetrating oil for a week first.

    Any and all comments would be appreciated.  These are JDM heads,  

        Bernie