I dropped by an independent specialist on my way home from work today to have a chat with Paul (the proprietor) and to see what was going on. I ended up seeing something that I had never seen before – a brand new clutch kit with a 3 bolt starter ring gear. Paul had a 2004 360 in for a clutch and had ordered a full clutch kit from a Ferrari main dealer and was sent an obsolete part! I didn’t think there were any of these left out there.
In 2002 Ferrari updated the starter ring gear – the old design was fixed with three bolts, the new design doubled this to six. The switch over happened on assembly number 453022 so if you have a car newer than this you will automatically have the updated design. If you have an early car then you have a small chance of having the 3 bolt ring in your car but most cars will have had a clutch change after 2002 (when the ring will have been updated). Having said that, last summer (2011) I pulled a gearbox off a 360 to be met with the 3 bolt design.
And this is why – Ferrari had some failures of the fixings and decided to bolster them up. Note this is not my picture, I have taken the photo from Ferrari Chat: Link. Needless to say if this happened when driving the damage would be considerable.
Here’s a picture of the brand new clutch with the old design:
And here’s the correct clutch with six holes:
And lastly a picture of that updated ring gear: