At 2:35 at the green light, you went over a bump in third at high revs, your bottom end is toast, crankshaft bearings sound like theyre done. You might be able to rebuild the engine, but it likely going to be a crankshaft, bearings at the very least and a rod
Your oil viscosity is key for these engines. The bearings can be starved of oil if the oil is too old. My guy is right you wanna do an oil change every 5000 and 8000 at the latest.
Swap the engine with a Regular De from a 2003/2004 g35/350z. Send JUST your ecu to Guilty Garage. GET THE REV UP TO DE CONVERSION FOR $150. Problem solved, they use nissan tool software to remove the exhaust cams, so the car doesnt go into limp mode looking for them. Keep your rev up harness, intake cam position sensor and 02 sensors from the blown rev up. Put those on the non rev up de. You wont have to do any Nats delete. You keep your keys as is, you still have an alarm system and your keys are still locked to the ecu.
Guilty garage has the harness conversion, for that set up. My ecu comes next week. I did the exact same thing you did. Driving my car and abusing her a little on the drive home, and boom dead, except i snapped the crankshaft and put a hole in the side of the block. I looked for five months for a rev up engine couldnt find one. So i settle on the de conversion to keep the car running and not rotting being idle
