I've been helping a mate with his K1600, he doesn’t really know the provenance.
We had the cam cover off and discovered a couple of things that I hope folks might be able to help with.
The cams have been upgraded with Pipers, ground from Piper blanks. I measured them at 9.23mm lift (39.13 – 29.90) and are stamped with part numbers between cylinders 1&2, both have the same part number LGC206250N 13.
I couldn’t find anything on the Piper website, any ideas what these would be? Supersport?
I’m sure the head has been ported. I know most tuners mark the heads, I found "CK81" stamped on the rear exhaust side, anyone recognise this?