The time has come to install the dual crank sensor on my IO360B1F, but
as usual, I'm stumped. If any of you have done this and have some pics
to share, they most certainly would be helpful. It is very clear where
the mounting plate should be located but the very clever folks at
Lycoming failed to drill and tap the relevant bosses on the front of my
crankcase. So, I must do this for them!

In order to drill and tap the crankcase, I must gain access to the front
of the case through existing holes in the crankshaft flange. I need to
remove one or possibly two of the threaded inserts which are press fit
into the crankshaft flange, these are the inserts which accept the prop
bolts. I'm hoping that one or more of you may have an elegant solution
here. The last thing I want to do at this point is muck up the
crankshaft flange in the process!

ps...am seriously in search of a '91-'93 Mooney M20J MSE so that my
flying skills don't completely atrophy as I try to solve problems like
the one outlined above.

Angier,

 

I believe Klaus suggests using a short bolt (prop size), drilled thru the center, as a drill guide - no need to remove the press fit as such a guide is screwed into same.

 

Grayhawk