No I mean if the stack extends threw the firewall into the fuse along with a part of the carb is there enough volume of air for it to opperate correctly or do I have to have an air flow for it. It stated it in the online manual that if extends into the fuse you need to open a hole in the back of your fuse for airflow for it. Or did I read into something thats not there.

Rear induction
Carburetors, whether front or rear, require a steady supply of fresh air. The best way to supply
air to a rear carburetor is by installing an air scoop. Some have thought to drill holes into the
fuselage near the carburetor area rather than creating an air scoop for the carburetor. This does
not work, it fact it will create a vacuum effect that will draw the air away from the carburetor! Again,
you should install an air scoop into the front of the plane which will supply air into the fuselage.
This air will then need to flow out of the fuselage. Drill exit holes into the rear area of the fuselage
24i / 28i Engine Manual
more infos: www.3w-modellmotoren.de
for this purpose. Important: The interior of the fuselage must be sealed to prevent damage from
gasoline that sprays from the carburetor. Use a thin epoxy or other appropriate fuel proofing
method. Do not overlook this step as gasoline will melt some materials like Styrofoam very quickly.