gearbox rebuild

[456GD]

As the saying goes "you pay for the engine and the gearbox and you get the rest of the car for free", I was disapointed when I realised that my sub -30k miles, never raced, annualy serviced 456 GT required a significant gearbox rebuild.

What is the experience of people with 10+ year old ferraris? Do other owners had similar experience?

Thanks
G

[number 46]

Manual or automatic?

[456GD]

manual... and the issue is with the reverse!

[number 46]

Not much help, but a previous owner of my GT had a pretty large bill at an F dealer for manual G/box work at around K15 miles, although the bill did show hire of G/box tools !!! which I think was a bit of a cheek!! Just be thankful it is not an auto !! fk it who needs reverse any way !!!

[Lars87]

When my 55.000km 348 had a gearbox failure, we found that the bearings had allready been updated... So it set out on its 3rd set of gearbox bearings.

I have not been impressed with the engineering...

[JasonSF]

Get a second opinion!

[Plug550]

Had my 550 box rebuilt at 40000 miles. Second and third synchros had failed. It turned out to be a manufacturing error, with the selector forks constantly rubbing against the synchro gears and wearing the forks out. Wasn't an expensive job though, sub four figures from memory. Run sweetly ever since, now nudging 50k.

[Lambokb]

Hi my 456MGT has done 65000 miles without any problems but I think there can be some transaxle issues according to Michael Sheehans article 'Cheap but not inexpensive'
'The circlip holding reverse gear to the gear cluster can fail; if your 456 or 550 pops out of reverse, truck it to your Ferrari service center and have the transaxle repaired for about $3,500. Drive with the transaxle making ominous sounds and you’re looking at $7,500, after the reverse gear has bounced around in the transaxle.'
Is this the problem with your car or was it something else to look out for?

[456GD]

@ lambokb: exactly that was the problem in my case. The rings that keep the reverse in place moved allowing the gear itself to move. I was lucky as you say because I transported the car before it completely snaps out inside the box and cause a huge damage. Still can't help thinking that they used these ring to keep the gear in place (they really are like an engagement ring thin) and not smth stronger...

[LamboBrum]

Tool rent! Ace!