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 Ames
N4ZQ...back to about 84%