Is there a torque spec for the ring gear bolt? Prefer not to use "tight" as a spec.
There are not torque specs for any bolt on a Model T but this tread may give you an idea:
Here is another:
No, all you can do is look up the torque recommendations for the particular size and strength bolt you are using. I don't have my chart handy but there are charts on line. KGB
Just tighten the bolt enough that it is not loose, but not so tight that it snaps off. We are working on a car that was not built using any torque wrenches. None are needed.
Stop just before the bolt breaks.
I torqued them till they broke then another 1/4 turn for good luck.