Reviving a Very Broken E46 M3 | Installing the New S54 | First Start!

Today we are installing the newly refreshed S54 donor engine for the E46 M3 that suffered a catastrophic rod ejection on its original engine at 143k miles. In the last episode we fully overhauled this engine, and now it's time to install it and HOPEFULLY fire it up for the first time. Fingers crossed!