I changed 14 out of 16 valves on an Astra.

It's been sitting waiting for a few weeks, and I finished stripping it down yesterday. This morning I got a new valve spring remover, which turned out not to be able to reach the middle four valves so I put in some extensions. if I had known I'd need to do this I could have just made a suitable ring, longer arms and welded that to my existing valve spring compressor. Still, it looks like my stick welding is almost getting respectable…

As for the valves… I thought 14 out of 16 were bent. With the head off it looked like 4 were OK, but after pulling them out I wasn't so sure and a test with the valve paste showed all 16 gone. Some VERY gone! 

I may be able to skim the two best valves in the lathe – the four least bent don't have any detectable distortion in the stem. I did this some 15 years ago when I found myself one valve short, and it was a success.
I was very pleased with myself for discovering a neodyminium magnet makes a great 'handle' for valve grinding, much better than a sucker on a stick. Unfortunately the exhaust valves aren't magnetic, although the inlet ones are (same manufacturer).
Neil