21-03-2019, 05:56 PM
I have had my engine out on my early RP (no rubber mountings) and bolted it down securely. I recall from my youth that, if the mounting bolts were loose, then the engine growled.
There is another point too. A rigidly mounted crankcase stiffens the front end of the car. Bugatti used to rely on the crankcase for this as the theory was that, provided the chassis was rigid from the front axle to the steering box, one could safely let the rear flex as much as it liked. The car would still handle. In fact, the Type 35 chassis probably did more of the rear suspension work than the springs and they handled really well!
There is another point too. A rigidly mounted crankcase stiffens the front end of the car. Bugatti used to rely on the crankcase for this as the theory was that, provided the chassis was rigid from the front axle to the steering box, one could safely let the rear flex as much as it liked. The car would still handle. In fact, the Type 35 chassis probably did more of the rear suspension work than the springs and they handled really well!