Joined
·
1,077 Posts
This one is carbed(which is why the intake port isnt polished), 50mm:




They can be helpful in making an educated guess. This isn't like comparing one porter's job to another on the same head. With one having a single and the other having dual exhaust ports having numbers to examine can go a long way. Not trying to sound the smart ass, I'm just really curious as to what each is doing considering the money involved in going with an XR setup.flow numbers wont tell the whole story on what your lookin for