I'm sure the exhaust back pressure creates a lot of extra unneeded heat as well. The catalytic converter in that pipe is pretty restricted from what I've seen. There's a huge difference between a cold engine and the clutch engagement and shifting compared to when it gets super hot. I'm going to see if I can find a port somewhere for a oil temperature gauge. From what I remember from years ago it takes 12 miles per hour to get any kind of efficient Cooling on an air-cooled engine. Many times we are going a lot slower than that. Also all the guys in Texas, Arizona, Nevada, etcetera who sit on these things in stop and go traffic would definitely benefit.
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