V8S Sportshift II Query

[Gruff500]

Interesting issue today in my 2013 V8S which I've had a couple of months.

Was down on the East coast so took it out of sport mode as was going slowly. At slowish speed (up to 20mph) there was a pretty horrendous metal rattle which I assumed was the gearbox but which some have said might be the carbon driveshaft. Either way it really doesn't sound mechanically right.

There may have been a few posts on this but welcome any experiences or thoughts! It's under warranty so may well be going back to check against the 'TADT' line. I've not noticed in sport mode before and wonder if that's relevant?

Otherwise the gear shifts are just fine and it's fine if not relatively great at low speeds.

[hashluck]

Sounds like a TATD but get it checked if unsure.

It is very disconcerting when you first hear it though!

[Gruff500]

Thanks! Yes it was weird and sounded all very wrong!

In some ways the SSII system is wonderful at speed and far smoother than a manual but the automatic clutch at slow speeds is pretty clunky and prone to judder.

[HBradley]

If it's a 'scrapping' noise that occurs when the engine is warm & at low speed (sport button pressed or not), It's not the gearbox or the clutch, it's what's called, 'Gear Chatter'. It is in fact the Torque Tube resonating. The sound emanates from the engine & travels down to the gearbox, hence why it sounds gear-related. It's not a fault apparently & can affect both manual & SS cars.

[Jon39]

If you hear it at say 10 mph in 1st gear on very light throttle, then press the accelerator a little more.
If the chattering noise immediately stops, then I think it must be the torque tube noise.

I just try to avoid the circumstances where that noise is likely to occur, thinking I am doing good, but perhaps no harm is caused anyway.