Had a go at getting the head off my mates FRST today and I managed to break 2 8mm allen key heads for my ratchet...

The head gasket had been leaking so I think the water has got into the threads and started rusting them...

Anyone got any ideas or tips on how I'm gonna get these out?

I think Halfords are getting a bit pissed off with me bringing the allen keys back for a replacement every 10 mins