Lexus GS430 Cam and VVTi seal replacement (and I may have blown my engine up...)

Project GS430 E2: This is part two of what started out as a simple valve-cover gasket replacement on the Lexus. It has now turned into a Cam and VVTi seal replacement too. Let's just say that despite doing lots of things right, I got one key bit wrong... just long enough for consequences to happen... Which will be covered in Part Three. ;)