Compression Troubles.

On my second day of owning an RX-8 my engine decided to die on me while driving trough the city, basically on First rotor I had 90 Psi while on Second rotor I had 0 Psi, so had to get a used engine temporarily so that I can rebuild properly. It took about 3 days (around 20 hours) with minimal knowledge about this car, to swap in 2 years older but a fresh rebuilt engine.