I'm stuck up at one of our northern bases this week doing management coverage so no shop time this week.. but I want to share a couple of weekend items.
Because I plan to utilize the e-pump now on my Boxer setup I can free up the exhaust for better flow - so I made up a set of stacks to help with that.. My last set was 6.7 mm ID and I had to restrict then to about 6mm to get sufficient exhaust pressure to move fuel. The new ones are about 8mm ID made by having a "fixed" external thread and a jam nut rather than the compression fitting..
On another finding - I have always had "mushier" compression on one of the cylinders of this engine - I think Bert and Dave might have had similar issues.. Dave suggested I check for a stuck ring and I did that but found it OK - ring gap is a little excessive but nothing else is apparently bad there. As I was reassembling I tried to check all leak sources and noted the intake had a draw and pressure as it was turned over with the port plugged with a finger. (both valves closed) Took a while to find it but there is a leak between the valve seat and the head in the area noted in the picture. This engine runs excellent so I don't think its an issue and I don't think to would be a simple fix.