Small 90 degree coolant pipe from throttle body to intake manifold
 

So there I was, enjoying my fresh new center bearing on the way back from picking up a tube of grease, when about 3/4 of a mile from home, the sweet smell of coolant began rising from my fresh, 6.2 mile long block. I figured a hose had settled into place and was peeing just a little bit, but I opened the hood to find a small 90 degree fitting had popped out of the intake manifold. It sits right next to the thermostat housing, and runs into the throttle body via a small hose. It's unthreaded, and SHOULD just press into place, but it pulls right out on my truck.

So, how do I get this little guy to stay in?
1985 Toyota Xtra Cab SR5, 22RE

The fitting is shown with the green arrows, and the blue arrow shows where the hose leads into the throttle body.

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its hard to see but looking at it someone broke it off and u might have to have it welded back on or get a new nipple that goes into the throttle body and have them pressed together.

It's not broken, I just slid it back into the little boss. I suppose I should have taken some pictures of it while it was out. I may do that tomorrow afternoon. The best thing I've come up with is to tap it, but my worry there is metal shavings falling into the coolant and being carried through the engine. The idea of that gives me the chills, since it's a brand new engine and all.

If you choose to tap it, you can make sure it's dry, then put grease on your tap &/or drill bit. This seems to work pretty well to hold onto the shavings. Just do it very slow speed so there isn't much centrifugal force to sling it off.

Or if you choose to just tap it back in, I would do cold weld stuff, i.e. JB Weld, etc... I've had decent luck on no/low pressure situations.

Well, I was able to get Permatex Sleeve Retainer ordered through my local O'Reilly. After cleaning up the mating surfaces this morning, I applied it and set the fitting in place. Then I set about tightening shackle bolts, and greasing all the fittings on my truck. This all took about an hour, and by the time I was done, the fitting wouldn't budge with medium hand pressure. Total cure time for the sleeve retainer is 24 hours, so it should be good tomorrow morning, however, I decided to take advantage of my truck's decision to purge half of it's coolant, and install an Autometer Ultra-Lite water temp gauge. The metric adapter for the sending unit will be here Wednesday afternoon, so after I install that, I'll top things up and start putting it through the paces to see how well my repair works. If it happens to blow the fitting again, I'll be going the threaded route for sure. Thanks everyone for your advice.