So I just got a S4 TII long block, i'm going to be disassembling it soon, what advice, or what threads have good advice on tearing it fown and being able to get it back together? It's a JDM engine, one of the low mile ones, the rear rotor has bad compression, to damage it appears though so I think it's possibly a cracked seal, i'm hoping for the best.

 

Get the rebuild video from rotaryaviation.com. It is excellent.