2nd time around: I used to spend a fair amount of time on several automotive forums where the subjects were Vanagons and engines, helping troubleshoot problems and just enjoying the vibe of chatting with like-minded folks. Over the years I’ve written quite a few posts attempting to explain certain aspects of automotive and related technologies. I used to receive messages of thanks fairly often from people for whom my brief articles helped illuminate some burning question, or simply helped them fix their car, which was always hugely gratifying because those were the reasons I wrote them in the first place. I don’t get thankful emails nearly so often anymore, which tells me that these things aren’t being discovered by participants on those sites, they’re falling further back in the archives so are low on the list of results when people search for specific topics. So I’m going to collect and repost some of the better ones here from time to time, edited lightly for errors (which are hardly rare) and to reflect new developments and learning in the related fields and in my own understanding. Most refer to specifics of the Vanagon platform, especially the wasserboxer (WBX) engines and supporting systems, but as an inventor/designer I’m much more interested myself in understanding the underlying principles that govern phenomena, aka “science”, so I hope by reading you can glean some of that stuff from thse posts and apply it yourself to similar problems. So, “2nd time around” will be a series of recycled stuff I hope you will still find worth your while.