F40 rattles all bolts loose

The crank and the balancer are nearly identical to a great many other Ferrari engines and we simply do not have those issues. Sorry to say but I suggest a more dedicated approach to assembly after servicing and following Ferrari procedures.

The cars are long past the age of knowing their problems. If shaking fasteners loose was an issue on the model, particularly crank pulleys we would all know it by now.

At this age it is possible the rubber in the vibration damper is bad but I have seen it go bad on many Ferrari engines and never experienced it causing a properly tightened bolt to come loose.

 

Does this look like an oil filled damper? Its a very conventional front pulley/vibration damper assembly using a traditional rubber isolated inertia ring.

Very good pictures also exist on the Maranello Classics web site.
Sorry to have to put it to you this way but your mechanic is a complete idiot.

If yours came loose, someone left it loose, that simple.
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This is how wives tales get started.

 

@Rifledriver ,
I already had three failed F40 Crank Dampers in my hands and I know of a fourth that needed to be replaced.
One had a crack at the keyway and lost its tension. So, there was some damage.... New crank, cam gears and so on...
Other two had deep marks from the key.





I bought a replacement and they tried to sleeve it from both sides... Had troubles to return it "whats the problem? It fits the crank!!!" Yeah, it was possible to put in onto the crank, but it was loose...

There are two new dampers on the market, one from Modena Motori and one from F40 Only.

I remember, that Ferrari had a technical service bulletin regarding crank dampers, but that was some years prior to the F40. Image Unavailable, Please Login Image Unavailable, Please Login Image Unavailable, Please Login

 

I have seen quite a few of those. Very common when not properly installed. If not clamped very tightly they will work back and forth, damage the key, damage the key slot and in some cases damage the crank snout.

Vibe damper installation 101.


Early Testarossa had a problem with wheels coming loose and falling off too. It wasn't a wheel problem, it was an installation problem.

 

You are correct with at least 98%.

Two of the failed dampers were factory installed.

the cracked one gave me thoughts…


and there are stories with Testas, where it was impossible to remove the wheels. Installation error, too much torque.




What I still not get is, where are the vibrations comming from?!???

new Flywheel without balancing? Clutch installed wrong? Engine rebuild with some parts with weight problems?

i like to know more about this F40.

 

Do you know how many cams I found that the factory left loose? People have this romantic notion of hand made perfection.
Hand made mistakes is a lot more accurate.

 

could happen from time to.. cam to cam.

So far, I only had one issue with cam timing. The rest was ok.

 

And you would know, hope you are well Brian, by the way 83635 which you inspected for us worked out a treat at FNB, Paul was excellent.