A few Months ago I had to replace the engine in my 2011 E70. Before I put the new (Used) one in, I did a few things to it, including walnut blasting the intake valves. I've been meaning to post these for a while, but life gets busy. I know that carbon buildup isn't much of a problem on our N55s, but it looked like when the junkyard power washed the engine, a little water got into one of the intake ports and caused a little surface rust on a couple of the valves. I wanted to clean that up and also start with a clean slate. The pictures are loosely in order from cylinder 1 --> 6. If there's not a before picture it's because I got a little excited at the beginning and forgot to snap a photo before I started blasting away. The donor engine had 93K on it.

Now for your viewing enjoyment: