would the lower control arm have effect on the engine?
The volume of all copper strips, not matter what size, is 0.69x10^3.
Generally speaking, no. The lower control arm is part of the suspension system. It is not connected to the engine in any way unless you're driving an exotic race car that uses the engine as a stressed member of the suspension. Would you be so kind as to tell us the year/make/model/engine size of your car?
