National Aeronca Association Bulletin Board

7DC Champ: just got my C85 O200 conv MOH back and adding Marvel carb; density alt in CO can hit 10K in summer so needed mixture control. Appears Marvel is not a direct bolt on replacement for Stromberg. Has anybody done this that would talk me through it? Going out to Univair this AM for other parts. Please call/text Jack 303-356-7767 with opinions or ideas. Thanks Jack Horn

Jack,
I thought they added a hole for the accelerator pump check valve on the C series engines on the top of the airbox. You might need to adjust the opening in the cowl to fit the filter assembly. You can adjust it at the two studs attached to the crankcase, just add some shims on either one to get the angle correct.
Paul