Ok all- here’s a big update. In case I lose some readers, let me ask a question upfront: does anyone have the bolt dimensions for the 2 bolts that hold the thermostat housing together?
For the update: I received the fixed head back, and the shop did a seemingly nice job of “plugging” the hole I accidentally created(pics below). I was able to put the engine back together, and everything went relatively smoothly until I put the pushrods on and one sunk all the way to the bottom. After wondering how this could happen, I stuck a magnet down the pushrod hole and could sense something metal(and not small) was down there. Without any other option, I removed the side panel of the engine to discover one of the lifters had lifted out of its cylinder when I was pulling the pushrods(due to suction) and was sitting sideways! It was an easy fix, but pro tip: pull your pushrods out very slowly, especially if you sense you are creating suction!
Anyway, after assembling the engine, flushing the coolant completely out and refilling it, I started the engine and was incredibly pleased to say it started as soon as fuel made its way back to the carb!
I took a victory lap around the neighborhood and upon return, found coolant leaking pretty heavily from the thermostat housing(which I didn’t remove during the head change). The only thing I can think is that it was “tweaked” as the housing was used as a handle sometimes when moving the head around. Of course when I went to remove it and replace the gaskets, the bolts snapped and I couldn’t get them out…so a new housing is on its way.
Fun fact: I wouldn’t have known my fj didn’t actually have a thermostat in the housing if this didn’t happen (I took it off the block and could see its hollow)!
Thanks all and hope to be fully on the road soon- just need to adjust the rockers for it to run as smoothly as before!
Max
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