[Supras] valley plug removal

[Rockey Fox]

Man, it sounds like you have encountered some very seized plugs....my next step would be to drill a hole and use a screw extractor moving to larger and larger sizes until I either got them out or got thin enough to break the darn things out. If you get nervous about it take the head to a reputable automotive machine shop and have them removed by experts.
My philosophy is you only have to be 10% smarter than the object you're dealing with and I have had some formidable battles with inanimate objects but haven't yet actually lost to one  :-)

Good luck,
Rockey

----- Original Message ----
From: "berniek at technicaldevelop.com" <berniek at technicaldevelop.com>
To: Rockey Fox <supr91tt at yahoo.com>
Cc: Supras at supras.com
Sent: Monday, October 16, 2006 12:27:29 AM
Subject: valley plug removal



 
 


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