If both metal surfaces are really smooth and you have a good composite gasket then you may not need it. - If you have a good gasket goo available, it can't hurt. -My favorite is 'Permatex Aviation Form a Gasket' .
No, the exhaust gases are too hot. Generally a collapsible metal gasket is used on exhaust.
Yes you need a gasket between the thermostat housing and the engine. Usually a fiber type, should come with the gasket. In a perfect machine, the metal to metal contact would be so exact that there would be no leak even under pressure. This is not the case on most cars. The gasket allows for slight imperfections in this contact area. Even better is a gasket with a little automotive silicone material allowing for a good seal under heat and pressure.
That method results in a more accurate and even torque.
They are a sheet metal cup that is pressed on to the back of a lead bullet to hold the pressure better, sort of a gasket on the back.
There are many gaskets on any machine. Is this an electric compressor? Once you find what gasket it is specifically, you simply need to remove that part, and add a new gasket, then put the part back on...
the location of the thermostat is under the throttle body.before you put it back on you need to buy some gasket sealer or a gasket for the thermostat
You shouldn't need to take off the intake manifold at all so, to answer your question, no. However, if it the exhaust manifold you mean, the answer is still no. It should be a multi-layered metal gasket and the only reason to replace any gasket is because it is damaged.
You will need to remove the cylinder head from your 1994 Chevy. Remove the head gasket and clean the surface. Put the new head gasket on and put the cylinder head back to its original position.
purchase a gasket/o-ring designed to fit in that place - your local service shop will be able to supply this. or you can use generic gasket making "goo" as long as you get water safe stuff
No, do you not need a gasket, don't be ignant.
no gasket sealant needed. Just original gasket is fine.