Originally Posted by TexasDav
tech question: When my motor mount loosen up, the vibration caused the fuel to foam. This caused the motor to run faster then ever before, adding about 7mph to the top speed, but if I ran it full open, then it would die once it reached full speed. I fixed the motor mount fixing the foaming problem. But also lost the extra mph and rpms. Would motor mounts do the same problem or would they dampen the vibration. If the dampen the vibration I could see they could increase the rpm and mph.
They should completely dampen the vibration. A-arm bushings are basically just a tube in a tube with rubbber between them.