The old motor mounts were on the edge of supporting the engine much less dampening out the vibration of the engine.  During the Haul Out of 2008 this was on my do list.  After pulling the shaft and coupling, I started to loosen the bolts for the mounts.  As you can see in picture 4, the mount was at a extreme angle?  Little did I know at the time a bolt was broken off due to the vibration of the engine.  See below...

First Raising the Engine in place to exchange the mounts

     The engine had been out previously in 2000 when I overhauled it.  This operation was just to raise it off the mounts long enough to insert the new mounts in place. 

Broken bolt on the motor mount foot !!

      This discovery just ruined my day.  So never having extracted a broken off bolt and having to do it with the engine in place and knowing that if I didn't get it out the engine would have to come out...I was not looking forward to this.  When I rebuilt  the engine I used non-seize on the bolts so I had a good chance of getting it.  I practiced on a replacement bolt first while installed in a vice, so I know what to expect and how deep a hole to drill.  All I can say is that it worked as advertized!  On the motor mounts...

 

Raising the rear end of the motor to free the mounts
This turned out to be a very difficult process.  Not a clear way to raise the rear end of the engine up 6 inches.  Slow going but did get the right rear out and free.
After freeing the old mounts, the new motor mounts are position in place.   This was not an easy process.