Posted by Chris Case [172.68.46.182] on Tuesday, March 20, 2018 at 15:26:27 :
In Reply to: "Burbling" engine exhaust once warm posted by Ddd [108.162.237.19] on Tuesday, March 20, 2018 at 08:59:56 :
I figured it's a flat head thing, so much surface area to the combustion chamber that gas condenses out.
I've had them on the dymo. Tailpipe emmissions good, horsepower excellent at 60 to the ground. So I don't worry about tail pipe noise.
hmmm, I wonder if negative overlap in the valves does something to exhaust noise?