David Mac Posted February 19, 2007 Report Posted February 19, 2007 I know I read this somewhere but for the life of me I can't remember where. I read it was advisable to drill a small hole in the top (opening & closing part) of the thermostat. This was to allow any trapped air to pass. Does anyone remember this or have advise on the subject. David Mac Quote
Norm's Coupe Posted February 19, 2007 Report Posted February 19, 2007 I've never heard of that one. I just plop the thermostat in as it comes. Never had a problem. Quote
Plymouthy Adams Posted February 19, 2007 Report Posted February 19, 2007 You can drill a small by pass hose for the air to bleed...some new units come with the purge hole...some have the little jiggle rivet in it. It is a fast fill advantage on having to wait til lthe engine is hot and opened thermostat to purge, burp and fill with remainded of coolant. I have been doing this since about 1975..on some late model cars the unit is offset and must be indexed..be careful here...will block heater passages... Quote
David Mac Posted February 20, 2007 Author Report Posted February 20, 2007 I found where I read this. It was on the Vintage Power Wagon Site. If you look up thermostats there is a Tech tip that says to drill a small hole. Thanks Tim for your reply. Quote
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