This is a combination of two posts from Phaedrus' website on FEED LINES and RETURN LINES.
Re-posted by permission. ~Joe
Installing the Cylinder Head Oil Cooling Return Lines
One of the main differences between the XR1200 and other Sportsters (or Harleys for that matter) is the oil cooling...
I'm trying to find the head volume and intake/exhaust valve sizes.
I found some numbers on the Buell XB head (62cc volume, 1.810 intake, 1.575 exhaust), and I'd like to compare that to the XR1200 heads.