Thermostat Housing

[theshadow007]

Finally got the old thermostat housing off and the old bolts removed. Dremel is a great tool. I have a new housing and thermostat and bolts. I really hate PO's who don't know what they are doing. PO put a 180 thermostat in and the sealant used on the gasket was gooped on the bolts. So, a couple of questions. First, I have heard of sealant being used on the gasket (very little, of course), what is the exact sealant(brand and type) I need and which side should I of the gasket should I put on. Second, I have heard of people drilling a small hole in the top of the thermostat to help with burping the system since we all know air bubbles wreak havoc with the temp gauge, is this something normal, or an old wives tail? If it is recommended, what size hole do I drill?

Thanks for the help

 

[TOOLOW91]

I still drille a hole in my t stat at 12 o'clock . Makes things much easier . I use permatex right stuff grey or black . Thin coat on the housing and the back side of the gasket .

I've had to many issues where the housing or the intake wasn't true and it still leaked without sealant on both sides .