ahha..yeah true also, the concept is sumthin like Msian buildings and Japan buildings. Msia build them without any space cus ther isnt any earthquake here, but in Japan buidlings ther are earthquake so they uses sum materials dat is a bit flexible so wen it shakes it wonts crack those buildings.
same applies to engine mounting, if use those normal mountings, its lifespan is lower cus easily to crack, cus ther is a free space.but for a solid mounting, it will take some time to crack but body easy to crack cus ther is no free space. hope im rite here.
jus my 23 cents