I was on the track yesterday morning, as I downshifted and went to accelerate out of a corner my transmission/driveshafts popped. I now have no drive nor movement to wheels.
Everything works fine just like normal.
It will go into gear properly while running. My clutch pedal still has full movement and return on it (hydraulic clutch).
When it's in gear with the clutch released the speedo will climb to 20kph, just as it would normally when just rolling. It will go into every gear while running, and both the speedo and tacho climb when throttle is touched.
Has anyone had this before??
Car is going no where...

 

You have broken something on the driven end. This means, axles, differential side gears, hubs etc.

Since the speedo still operates this means the ring and pinion are still intact.

 

I've had it up on the hoist.
The driveshaft had been spat out of the trans. Not sure how, but I'm going to look into it.
I've also been leaking trans fluid out of my box. This I'm unsure about and worried, so I'm going to get into it this afternoon and sort it out.

Edit: after getting under it I found out that one of my bolts for the trans to engine, was loose. I have tightened it yet am still leaking fluid. It appears to be from my left hand drive shaft not seating properly.
I am also leaking engine oil, which may have been leaking from the loose bolt I mentioned earlier. It doesn't appear to be leaking from any of my gaskets, but I will look closer tomorrow morning.
Question: does the ring around the drive shaft near the transmission do anything to prevent fluid from coming out?? It is currently loose and just skips around.

 

I'm also going to look into a new aftermarket LSD for it.
Does anyone recommend one for circuit track use?

 

Yes. The axle mates into the trans and that seal keeps the oil in the trans.