Put about 150 miles on the Miata since it came off the jackstands this weekend.
So today on the way home from work, hiatus happened to look at the coolant gauge, nearly pegged, shut it off and coast onto a gravel side road/driveway...........a coolant hose popped off.....not sure how much if any coolant left,waiting for it to cool down and my dad to show up with some water and E36 M3.
Just hoping I caught it before it hurt the motor.
Yea, same happened to my Cavalier, except I was on a track and it popped straight off. No heat gauge , but if the steam was any sign... I need to hook up a heat gauge.... I'll find any damage Saturday.
Good luck on yours.
If it didn't overheat enough to shut off then you should be fine. I've got 50k on my car since I busted the rad and babied it into town, pouring water in every mile or two lol. Never overheated enough to shut off, just watched the light and caught it in time.
YMMV but this is just what I've always heard..
"nearly pegged" - you should be fine. Miata head gaskets are tough little things.
I agree with the others. should be fine
not apples to apples....not even apples to oranges 
but I got 15 miles out of an old AMC V8 with NO Water in the radiator and it lived. Was glowing cherry red when I popped the hood and scratched my head 
I never had a problem with my Miata's cooling system in five years of track days. Then I sold it to a guy from Maryland who came showed up at my house in Connecticut and told me he was going to drive it home. Ten miles from my house, it blew a heater hose.
Sure looks cool when that happens. 
Good news, it appears to be OK.
At most it was elevating in temp for probably 90 seconds, when I got off the highway it was fine. Then romped on it, then noticed the temp was climbing and shut it down before it hit the "H" or the notch on either side (do MIata's have a coolant light that comes on? If so, it didn't).
My dad showed up about 30 minutes later, put the hose on, filled it with water, started just fine, nothing out the tailpipe and no milkshake or anything.
Drove it the last 3-4 miles home, ran just fine, stayed rock solid in the middle...................then let it cool down for an hour/hour and a half.......started again, no smoke, running fine, no knock, no milkshake.
So I'm hoping it's fine.
Although trying to fix my brake leak at the proportioning valve busted the adapter. Literally split, did I tighten it to much one the brake nut had some teflon on it? Yeah obviously, but I didn't understand why it was leaking to begin.
Oh well, that's a small issue. Screwing the motor would have been bad.
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