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Old 07-13-2016, 12:42 PM   #10
Tom Goldman
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Join Date: Jan 2003
Location: Allentown,PA
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Default Re: Valve seat issues

Blast clean it to remove the carbon and pre heat to around 500 deg to help cook out any remaining carbon.
I TIG repairs like that using NickelCast 55 stick rods with the flux removed , makes a very nice ,durable repair ,especially on old castings.
I've used this method for blocks , heads and manifolds.
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