The other day I was driving my 120Y (and run one motorkhana course) when I started to hear a hell of a noise and shaking under acceleration and reving. After inspecting the car with some mechanic friends we came to the conclusion that the flywheel bolts have given up the ghost.

Some factors to consider:
- I assembled the motor myself to factory torque specs
- I set up oil clearances and piston ring gaps looser than one might do
- I reused the best flywheel bolts I had because I seem to recall Nissan don't sell them now? (I asked them again and they say the A12 ones are NLA)
- I use a lightened A12 flywheel on an A14 crankshaft
- The motor sees 6000rpm, full revs in top gear, hard launches, missed gears spinning up to 7500rpm and somewhat shakey idle I've been meaning to smooth out( and I just got the synchrometer adaptors too :S)
- I drove the car home 25odd km not going more than 60kph, keeping the clutch firmly engaged the whole way

My question is for those more knowedgeable on this sort of thing than me. Looking at the worst case scenario I'd need to replace the crank, flywheel, my legs, clutch, and possibly some gearbox bits? Could the flywheel mating surfaces be machined? I have not removed the gearbox or motor to inspect the severity yet as money is tight so it's more officialing from me this year.

I don't quite believe Nissan when they say the bolts are no longer available, what would they do for Bakkies?