Metallic Ticking/banging From Gearbox/clutch

[TezGT-R]

Drove the 32 over 600km to visit my parents and 15km from their house halfway up a mountain pass it starts making a ticking/metallic banging sound from the gearbox/clutch area. I wasn't up it at all because there are massive log trucks that come around the corners on the wrong side of the road.

The noise stops when the car does and revving it while stationary does not make the noise. While rolling if I push the clutch pedal in I can feel it through the pedal, the sound doesn't stop though. Happens in all gears and any speed. Does get faster as you go faster.

It had a brand new nismo twin plate professionally installed about 3000km ago and I've really only gone on sunday drives since then, no thrashing. Being the only thing I haven't had to fix yet the box is a bit tired, worn synchros etc, I knew it would be the next thing to give me issues, so I'm not devastated or surprised.

I'd just like to know what it is before I take it back down the mountain to the mechanic we use in case it's something horrific and I shouldn't even limp it there.

Thanks guys, Tez

[Hadouken]

May be a silly question but, is there oil in the box?

Does it do it when you are rolling in neutral?

[TezGT-R]

I hope there is oil in the box, since I paid for it to be replaced when I did the clutch. I'll have to take it around the block again and check for the noise in neutral, I can't remember 100% if it did or not.

[Hadouken]

so no leaks then?

[TezGT-R]

Nah not a drop, I've been keeping an eye on leaks since I had a heap of seals replaced when I got the turbos done. Garage floor is spotless.

[GTSBoy]

It will be the front universal joint striking the cad plated pressed steel cup at the tail end of the box. If that is not quite straight (ie gets dislodged a tiny bit, or a tiny bit bent) then you get the exact symptom you describe.