Aero Lycs

[johnmcf]

Does anybody have any images of the Lycoming Aerobatic modifications to their crank cases, specifically interested in reported holes that aremade for allowing oil flow from the crankcase area to flow to the accessory case when inverted - for eventual scavenging from the upper case pickup?


Apparently Lyc bore 2 wholes in the rear cam bearing area of the case to allow this flow.


I 'm wanting further details, sizes, locations, images, surface/hole finish when performed.


Thanks in advance
John

 

[wally]

 

[Neil]

 

[Carlyle]

 

[gbmmoyair]