rocker arm spring?

[datdrift]

took the silvia out for a run the other day, took a tight gap, and had to floor it in 1st and 2nd, and i noticed more ticking than usual coming from the top end so i got it home took the rocker cover off and found the bolt holding the rocker spring on inlet valve no 1 had ripped out, taking the thread with it, leaving the rocker arm flailing about




so ive put a slightly longer bolt in and threadlocked it in, and im hoping it doesent come out again.....i just changed the clutch yesterday so ive got to put some easy miles on it anyway