I just received my 7-77 back from CH, Adrian did a great job!!!

I am choosing to run it on Gas, running 32:1 and it blows a horrible black mess. I have run it for about 4 1/2 hours on set stand. How low can I run the oil content?

It runs great RPM wise, transitions and idle are great but it seems to be starved for air. When it was at full throttle, the high needle was at about one turn but it ran great, did not over heat, I realize it would
need to be richer for flight.

I wonder if a larger carb would help or make a back plate for a Walbro type card.

Any opinions?

Also, should one run muffler pressure? in my head I keep seeing a spark getting to the fuel somehow, then a scene out of a WW ll documentary as my Corsair heads to the deck in flames.

Marty
Badger Ordnance