[sastanley]

Mary,
This discussion has also led me to think about a re-design of my Catalina 30 exhaust hot/dry stack setup.

I think I can get 4 or 5 more inches out of it if I try. Currently it runs almost horizontal to the water injection point which then goes into the muffler. I think I can make a loop that goes up 6", across about 6" and then down to the same water injection point.

This forum is great! I have learned so much about the good (& bad) designs of various A-4 set ups!

Incidentally, my local Lowe's has zero 1-1/4" galvanized pipe or fittings for the hot stack....there is apparently a plumbing supply store about 20 minutes out of town I plan to visit next week. At least the Lowe's employee recognized what I was trying to do when I brought my old pipe in and had a suggestion.