What I've done on my '66 150F to allow me to better heat the interior is buy a couple yards of dense felt material and made a curtain that I velcro in place just behind the seats, closes off the entire rear baggage area which blocks any drafts that usually comes from the tail section and also makes for a smaller area to heat. I can take some pic's and post later, but this really works well for me!
I bet that would make a difference. I've got a roll of stuff that would be perfect. But should do a burn test before considering it for aircraft use. I'll burn a swatch and see what it does.
My stuff failed the burn test and tears too easily anyway.
Thanks Bengie! You found what I needed, but I ended up using a quick/temporary fix. My old one was a bit more chunked out on the edges than this Ebay one so I taped 3 layers of duct tape on it and called it a day. (The long screws are markers...I replaced with big washers & cowling screws.) I haven't flown with it yet, but it seems to fit tight.
Looks good! Now tell us if it gets any warmer INSIDE the cabin. Did you ever check that rotary heater valve? Sometimes they get a little bent or don't turn all the way. Mine did that. You might be able to look with a flashlight from below without removing the cowling, but you may want to use a creeper to do it. Call if you have questions.
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