All this business about the rev limiter and the diff is a complete load of nonsense and is just being used disingenously by Alfa as an underhanded "scare and confuse" tactic..
267s in the red zone - um, so what??
The red zone starts at 7000 rpm, changing up before the limiter at 7200. It wouldn't take all that many enthusiastic blats do get that!
Say 0.3 to 0.5s in the red zone every time you change gear flat out.
I just did a quick calc on the number of upshifts for my local circuit and reckon for a single track day there are 750 up-shifts that would probably log close to 267s in the red zone on a single day.
Many cars run with extended limiters typically 7650, 7800.
I'm sure with a few extended windy country road blats you could log 267s over time no problem.
These engines are pretty tough - you don't hear of many engine related failures on here of standard GTAs, many of whom are driven very hard indeed.
I think in any case the real stress on the diff would be at the max torque area of the engines torque/power curve and not the peak rpm where torque especially has tailed off, so the time spent in the red zone is a red herring.. Its just being used to fob you off.
Potentially they might argue that the action of the limiter itself is so harsh that it might cause stress on the diff, I firstly don't think that is the case that it is that harsh but secondly the diff failures that people are reporting are not in general based on that style of driving.
Also if they didn't design the diff to be strong enough to stand hitting the limiter a few times then thats also indefensible.
Are these guys for real with that attitude!
apparently the first owner drove it quite
hard though. it's spent a total of 267 seconds in the red zone (damn. wish i'd known that before i bought the thing).