I'm puzzled by what you wrote about tightening the bolts. You said 85 on the harmonic balancer (which should actually be 70 + torque-to-angles of 30 and 15). Did you pin the flywheel in order to get the 85? And, if you used a torque wrench on that bolt, why not also on the motor mount bolts? How about the timing belt components - did you use a torque wrench on those? Hopefully you did, because the timing belt is not a good place for guesswork.
Unless you can determine that it's something else, the possibility exists that something is wrong in the timing belt loop. Therefore, with the further possibility of it getting worse and trashing valves, I'd recommend you have it towed instead of starting it again.