Mondial Rear Subframe Flex?

No flex on the mondial rear subframe ! solid like a rock. But when you want to rise the car, do not use the back of this rear subframe. The weight of the engine can bend the subframe.

 

you can lift one rear wheel, and see how the other rear wheel comes up, no flex at all.

 

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You must be on drugs.

 

Of the V8 cars prior to 355 the GT4 had the stiffest frame and the Mondial Cabriolet the least stiff . Part of the reason was the removable sub frame.

The entire reason the 512 TR had no removable sub frame was the TR was so flexible it really hurt handling and the removable subframe concept was a major contributor to that problem. The 512 TR is much stiffer as a result.

GT4 is much easier to work on the engine than any of the subframe V8s. Anything short of removing pistons is easily done in the car.

 

If you had any idea how often cars are damaged severely when the sub frame was out you would not say that. Some of the cars are severely structurally compromised with the sub frame out. You are also presupposing the engine requires removal for service. In fact very few Ferrari engines require removal for service. Some of your conclusions leave a great many factors out.

 

Would anyone know the actual torsional and bending stiffness values of the Mondials?

 

The only time I have ever seen the factory give that information is on 360 when they started with the aluminum chassis. Even then they only stated it was X percent stiffer that 355. Never gave actual measurements.

 

That's what I suspected. Considering the soft springs and anti-roll bars fitted to Mondials, I suppose the torsional rigidity is quite low. The GT4 for sure feels stiffer, likely also due to the shorter wheelbase and narrower track.