My 52K has allways druled from the crank case drain plug. As it's not a daily rider and don't have a check valve in the trany cross over passage I took the advice of my age old dealer and any time i park it i pull the drain plug and push a drain pan under it.
Well wanted to go for a ride last weekend and low an behold the plug just kept twisting by hand pulled it back down and the complete tread was on the bolt.
I was able to unscrew the thread but theres nothing left in the hole.
The way i see it i've got three options.
1) Helicoil , reuse OEM bolt plug deal with leaks...
2) Tap for 3/8 pipe plug. Good to stop leaks but as it taperd and gets used it will work its way deeper over time or split the case..
3) Drill and tap for SAE / AN stright thread and use O-ring sealed plug. I belive a -6 thread is 9/16 x 18 thread so i shold be able to do that as OEM hole was 1/2x13.
So what have you done? what would you recomend I do?