by dr dick » Fri Apr 14, 2023 7:29 pm
Considering the three different Dash 62 rear pipes.
For the moment, let’s disregard the dash 62a.
That leaves us with the – 62 and the – 62B. There may be manufacturing differences that are only listed on the blueprints that I cannot access. that said the difference between the – 62 and a Dash 62B is the very first dent coming down from the exhaust port. The Dash 62B has a deeper dent and maybe slightly lower down on the pipe, this change happens sometime around this whole 1967 model update. It is quite common to see the early pipe (62) showing tooling marks on the 2 inch long straight section just below the connection to the exhaust port. These tooling marks are basically nonexistent in on the dash 62B pipes.
The conclusion is the 62 and the 62B pipes are nearly identical except the deeper dent helped clear the oil tank front mount on the electric start long frame bikes.
I will post a picture of the rare – 62a pipe in my next post.