Exhast deflector needed??

[rcl700]

I'm working on 1948' and wondering how much the exhaust baffle needed? 

Mine is seized. 

[Doug&Deb]

Are you talking about the heat riser assembly in the manifold? If so it depends on whether you drive in cold weather. It helps warm up the carb. Andy Bernbaums offers a rebuild kit for them if you decide to go that route. To answer your question though it also depends on whether it’s stuck open or closed. If it’s open and allows hot air to the base of the carb you could have problems in warm weather with fuel boiling.