I set out to sync the carbs on my '71 R75/5 and it dawned on me that it has no exhaust cross-overs. I thought all '70-95 boxers had at least one cross-over.
Here is a picture. The picture isn't really all that clear, but the headers are smooth. Not like they were cut off and welded.
Has anyone else seen anything like this or know if this was stock or production numbers?
A friend who has another '71 R75/5 and who rode mine for a year or so told me that my bike feels like it has better mid-range power--so I was wondering if this could be the result of no cross over?
Seems to me that the balancing of the carbs would be even more critical.