well thats good to hear......hey, what part# temp switch did you go with? I still need to get one and I want to to work with my 180 stat...


thanks

 

Does it dropping have anything to do with your fans coming on? Putting a lower temp thermostat in your car doesn't make your fans come on sooner. This may or may not be an issue at highway speeds, depending on how much flow you're getting through your radiator.

 

I've seen european standard stats with a tiny 0.04 hole in them, so that's obviously just to let air pockets through. Air is very bad at transferring heat, and still-standing water takes time to heat, so getting rid of the air and getting the water moving will let the stat feel the real temp of the engine and open quickly instead of sitting in an isolated pocket of air and water thereby rising slower in temperature than the heads, opening too late, causing an overshoot in temp..
I wouldn't rely on a standard guage for accurate temperature indication btw..

 

I'll tell you what made me a believer. Ever notice that when you change the coolant and introduce air into the block the first time you start the engine the temp goes thru the roof for a minute and scares the hell out of you? And then you kill it real fast cause you think the thermostat aint gonna open? And you do this 2 or 3 times until the stat finally opens and lets the air and steam out. Been there done that dozens of times but NEVER on a car with a drilled thermostat.

 

I have one 1/8" hole in my 180 thermostat. I did it for the air pocket theory.