Thread: Delayed overheating problem

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Originally Posted by megamax42

I believe the old thermostat I took out was rated at 180 also, would I be ok drilling the hole and re-installing the old one? Sounds like a cool idea, quick question, is there any way to drain the upper radiator hose so I don't get coolant everywhere when I take the water neck off?

The old one seemed to be sticking, so why would you consider re-installing it? Throw it away!! If you get the engine warm before you open the drain cock on the radiator the coolant will drop below the water neck and you shouldn't lose much at all. If you drain it cold the t-stat will be closed, and the upper hose will tend to hold coolant. With the hole it doesn't matter, it'll drain back either way, but slowly.