When Lildog rolled Smilin' Bob the manifold broke at the exhaust location leaving about a 2" diameter opening. We test ran the engine before changing the manifold to see if there were other problems. It sounded quite impressive with that gaping hole for an exhaust.
Bigdog If you can't fix it with a hammer, you've got an electrical problem.
My wife says I don't listen to her. - - - - - - - - Or something like that!
I still remember the carnival rides at the county fair when they had individual power units on each ride . There was an assortment of IH- Case- A/C and Wisconsans all putting out individual tones . With anywhere from 10 to 15 rides all runnin it was cool to pick out the IH sounding like dads H , and the Cases sounding like his VAC model. And the wisconsins sounding like John Pucketts dads hay baler lol.
The first time I ever went to the SE Old Thresher's Reunion in Denton I saw a slick and I mean slick JD 50 running. I say "saw" because you just about couldn't hear it run. I don't know what the owner had done to it but it sure ran smooth and quiet.
I have never been a big straight pipe fan. To each his own I guess but the correct muffler compliments the tractor's appearance and I had rather hear it purr than bellow.