MA-4-5 Carb

RV7AV8R · #1 05-08-2009, 10:23 PM

Does anyone know the diameter of the intake port on the standard MA-4-5 carb on a O-360 Lycoming engine? Mine is buttoned up on the plane and I'd like to get this dimension without taking it all apart. Perhaps one of you have the carb accessible and could measure the intake ID, the part where we bolt on the Filtered Air Box. I have a float bowl gasket and at that point it is 2.36 inches, but I don;t know if it is the same at the intake opening.
Thanks in advance.

jabarr · #2 05-09-2009, 05:54 AM

Intake side at FAB is 2.50" where it transitions to a round port. 2.120" at the point where it bolts to the intake.

RV7AV8R · #3 05-09-2009, 08:36 AM

Quote:

Originally Posted by jabarr

Intake side at FAB is 2.50" where it transitions to a round port. 2.120" at the point where it bolts to the intake.

Thank you!! The RV group on this web site is great!