Crack in engine case...

[Mark Hislop]

Robert:

If your crank was replaced in 2005, and it was done legally, then you should have a VAR crank. The AD to replace them has been in place since the mid 90's at least. The paper work should verify that. I also think, but I'm not sure, that there is a serial number on the prop hub that you can use to identify the crank.

You can definitely replace the light case with a heavy case and use your original components. Whether or not that is cost effective, I don't know. I guess it all depends on what you want to replace (bearings, etc) while the engine is all apart.