Crank Case leaking, Doesn't hold pressure. Help!

[E10]

While trying to figure out why engine wouldn't start, realized there was no vacuum by placing hand over throttle hooked up a gauge and it didn't even move. Used compressor with remaining air left in tank to do a leak down test in cylinder #1 at TDC and expected engine to turn a little by the pressure. Air doesn't leak at intake/exhaust, sounds like its coming from the crankcase.

My thoughts either a hole in piston or worn out and need to get bored etc.

When I got the engine it was off timing, could that have caused a hole? Engine hasn't started since I got it.

Thinking i'm going to be rebuilding my engine now correct?

90 compression all around when doing compression test if that matters

[Lobo240sx]

Compression is too low. Should be 145psi and up. Time for new piston rings.

[E10]

Thats what i'm thinking.