Just wondering if there is a way to seal your cases without spliting them. Seems mine are leaking at the bottom of the cases (closest to the ground).

 

No - they must be split to be properly sealed.

 

Have you tried tightening the case bolts? Case leaks were not uncommon on Panheads; poor castings. I have never tried to seal a case leak but read the below vacuum method posted on another forum by an aircraft mechanic and long time Harley guy; one of the smart ones.

I haven't thought through how to pull a vacuum on a set of TC cases but if you can set the case up so a small vacuum can be pulled , "spray the leaking seam liberally with brake clean; the vacuum will wick the brake clean through the seam and clean it. Then brush the seam with Loctite 290; any Loctite will work if it can be drawn into the seam, it's just that the 290 is **** thin and will flow better. When done brushing, disconnect the vacuum source and clean off external loctite. Best done on a luke warm case rather then cold or too hot; use a heat gun to warm the cases. Give it about 6 hours to sit before testing it out". I think it worth a try.

Or, depending on how bad the leak is, just clean it up and keep riding.

 

+ splitting the cases.

 

I put mine on a scissor lift and re torqued all the bolts to spec plus 1/4 turn. Stopped leaking that was over 1k ago. Might be worth a try as splitting the case's might as well rebuild her.

 

I would highly advise against over tightening the case bolts for many reasons.