Bungees? Now I think you're on to something hah!
"Yeah.. Coming up with a "just in case" for that scenario might be real entertainment. Of course, there's a LOT of cars out there with no real "oopsie" provision built in, other than having two mounts that can counteract torque."
I just thought about that and envisioned a cantilever arrangement, somewhat like the vintage shocks. Like a guy has an arrangement with a lever and fulcrum, and the air bag mounted at 'lift' point to support engine, pivot point in center, and at the farthest other end a coil spring. Leave some slack on coil spring, and have a support plate under the air bags as per normal install. If air bag fails engine only drops a couple of inches until coil spring limits movement by stopping lever movement? Not nearly as complicated to build as it sounds. The MIG, where's my MIG?! But one point is that without some locator like this lever arrangement the air bags are very poor for lateral stability on the center axis top/bottom, that engine could move a lot sideways.
Yes, I adjusted valves and some small help but my problems may be in the small, hard motor mounts. Can't do much there until I get the wiring run for the MIG, then will do some all new motor mounts. I also wonder if it could be a faulty injector because I've heard that can do it too? I guess I should crack them one at a time and see if there's one that doesn't cause a miss!?
"Basically as your motor vibrates, it puts the most force on the mounts at the start and end of each vibration. With a damper, the most force is in the middle of the vibration.
When you've got the mount and damper tuned well, the max force on the damper in the middle of the vibration is about the same as the max force on the mount at the start/end of the vibration"
Interesting, I'm going to look further into this! I imagine that with some good motor mounts, one of these torque limiters and a harmonic damper one would have a pretty sweet setup.