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blageo23 · 06-20-2007

Im assuming its a new Tstat. Drilling a whole in the tstat will let coolant flow through the engine even when the tstat is closed. So drilling into the metal ring will do what you are talking about.

06-20-2007	#2
blageo23 AWD4G64 Join Date: Jun 2004 Location: Shoreview, MN Posts: 2,286	Re: Drilling thermostat Im assuming its a new Tstat. Drilling a whole in the tstat will let coolant flow through the engine even when the tstat is closed. So drilling into the metal ring will do what you are talking about.