Question, other than spark arresting, what else do these baffles do? Anything critical? I assume they do put a little back pressure of the engine so I am concerned about now running too lean. Also, I wonder if these baffles help isolate the cylinders from each other?
I have a Kohler Magnum 18S engine. Each cylinder exhaust pipe connects to a opposite end of the twin muffler which is about 5" in diameter and a foot long. At each end there is an entry chamber and then the spark arrestor which is (was) a 5" disc with radial slots. After the exhaust gas leaves its respective spark arrestor it enters a perforated pipe which exits the center of the muffler.
Thanks for your help. A new muffler costs $258. Yikes!
Edited by artbuc, August 21, 2010 - 11:32 AM.