RE: Shortning the stack on a side dump muffler.
There are divisions in go cart racing where all you can run is a can.
There has been a lot of R&D on a tuned can. In lew of an expantion chamber.
I just assumed ..........
The bad news is I have an old B&B muffler on a US 35. [&o]
I did just enlarge the exhaust tubes 3/16th of an inch.
I should get it back from the welder tomorrow.
Thanks Guys