Okay, to start off I've got a 95 ex 5sp with 160,xxx miles the oil is apprx 1200 miles old and a CAI. This has only happened twice but it still scares the crap out of me.
A little history so maybe you guys can help.
I had an overheating problem i.e. my car temp would be normal while driving but at a stop it would overheat the guage would read about 90-95% I changed the T-stat and added coolent and that fixed that problem. BTW I ran the car doing that for about a week and a half ( I know that was really dumb)

So I went to pick up my buddy's house, car is running fine. I stop at his house, turn off the car and start the car about 10 mins later. The car is sputtering almost like a mis-fire. I start driving and it goes away after about 45 seconds (after I get above about 3500 rpm) about 4 days later I drive the car around doing about total drive time of 30 mins or so. I stop turn of the car come back about 5 mins later start the car. It starts to sputter RPM drops to about 500 and I have to rev the car to keep it going. I notice a ton of white smoke coming from the exhaust. I drive about 45 seconds again the sputtering stops along with the smoke. I've searched and everything says its probably a blown HG. I checked the coolant and it apprears normal along with the oil.

What are you thoughts? Again, its only done this twice.
Thanks for the help in advance.

 

If you're lucky, it's the headgasket. But I'd lean more towards a warped head.