on the plus 90 step (oops, been doing mine plus 180) the torque goes up to about a zillion ft/lbs
if the motor is moving, weld a pipe to your counterhold tool and put a pipe on your breaker bar
get one in each hand and push them together.
Go with pipes that are as long as you can fit in the space available. 10' works nicely, as then you aren't putting a ton of force on the working end, so you don't bang your hands together when it does let go (or the square drive twists off your breaker bar)
when you do get it apart you'll see that there's nowhere for water to get in to actually rust the bolt (also nowhere for oil to get in, so save the spray oil for another bolt) it is just THAT tight
if the motor is moving, weld a pipe to your counterhold tool and put a pipe on your breaker bar
get one in each hand and push them together.
Go with pipes that are as long as you can fit in the space available. 10' works nicely, as then you aren't putting a ton of force on the working end, so you don't bang your hands together when it does let go (or the square drive twists off your breaker bar)
when you do get it apart you'll see that there's nowhere for water to get in to actually rust the bolt (also nowhere for oil to get in, so save the spray oil for another bolt) it is just THAT tight