Hi,

I'm getting really surprised at California 240 and now you with having trouble breaking bolts loose.
California's issue is the camshaft bolt of which is only 35 ft. Lbs but yours is a bit more of course!

I can't get over this picture you are painting with words that you are using breaker bar with a cheater of three feet and that thing didn't crack loose.
This bolt could have been tightened up to 122 ft.lbs which will max out a beam bar torque wrench that's about the same length as your breaker bar but the cheate should get but you have to get everything tighten up with out play. Then, you flex your arms in to your body a little bit with your body leaning in.
Then you take your whole upper body and throw yourself back as hard as you can. That will get that large mass moving.
When your arms straighten out, you are to hang on with a grip of determination!
It's that mass of inertia and the "snap" of your arms that will smack that bolt through its "sweet spot."

The sweet spot that it was area of stressed or stretched up bolt body between the threaded portion and an area under the head. The twist has to be done suddenly to transfer energy down the center of the bolts body. You have to hit all of the molecules, in the structure, at the same time, to move them from resting. Internally you are overcoming their rest and the frictional bond of the threads.

Art asked me to explain the term inertia recently and I thought it wasn't needed, but you two guys have me rethinking the process of what's going on wrong here!

Newtons law states that " the mass will tend, or want to, stay at rest."
The simplest way I can say this, to anyone is, "one should think" about mass as "stored" stationary energy! It may look motionless but it is moving within itself but its atomic weight.
Everything on earth is an element!
It vibrating its own molecules around already due to forces of ambient heat transfer to within.
In theory, If absolute zero heat was obtainable, the elements would fall apart.

In 1984-5 I played with liquid nitrogen enough to see things shatter when another outside energy force called gravity or I struck them! Bananas and grapes can be like glass! (:-)
Seriously, I worked with a scientist from Vanderberg while he used our facility. He tried to use helium refrigeration in a descending cascade formation around chamber to reach an absolute zero in a vacuum. A few molecules of Heat was the last thing he could not get out!
This was when I first time I heard the term "Neutrinos" and his reason why he could not reach his goal! Since then they have proved they exist, twice! Once in a deep mine shaft in Minnesota, I think, and most recently at the South Pole!
Now they are plotting or trying to, get a direction from where since they pass through the earth.

Anyways, There is the "energy force of atomic attraction" inside that helps keep them together and happily intermingling together in a bond as a larger object we see!
Those molecules are busy being just where they are in the cosmos like everything else in a balance until acted upon by another force!

When you move a hammer or turn a wrench you are applying energy to redirect the accumulated atomic energy in an object in a chain reaction.
That force is defined as a focus of energy movement of a sum of masses or inertia transfer.
Once an object is moved it wants to keep moving in a direction until acted upon by another force. Whether it be air friction, the magnetic attraction of Gravity or any other manipulations of the cosmos.
Newton again!

So, This is all about the movement of energy with energy!
You should notice on a torque wrench a scale of a conversion table in Nm.
That is there to remind us, that his theory was accepted, as fact, long ago!

You and California 240 need to get "physical" with those levers, your body mass and your brain mass of electrical energy behind them.

May the force of a few beers or something, be with you!
Or a decent impact driver with electricity or air pressure is my recommendation!
(:-)