The pics on your first posting show a misaligned cam (YZ cam with WR timing).
The pics in the subsequent postings show correct YZ timing of a YZ cam.
My WR450F'12 experience was:
- them side punch marks line up perfectly when the cams are installed right AND one sticks the finger into the cam tensioner's hole
- the top punch mark is manufactured always at a constant offest relative to the lobes for both YZ or WR cams
- the side mark of an cam to be sold as WR cam differs from a YZ cam (that is the only thing YAMAHA changed in '03-'05 with exhaust cams)
- hence the pin count between top mark and side mark of an exhaust cam varies, depending on YZ or WR cam
- hence WR timing: 14 pins between top marks, YZ timing 13 pins between, but check first!
- verify the 14 pins of WR timing and
- check the YZ cam you want to install for punch mark positions BEFORE messing up anything and
- tie the intake cam's sprocket to the chain,
then it is way easier to get the YZ timing right if one checks the 13 pins between top marks than verifies the alignment of both side marks.
Note: I never open the intake cam's bolts, I tie the chain to the cam, but I always remove the tesioner completely.
If you want to see them side marks aligned perfectly (highly recommended before closing the lid)
1 the RIGHT end of the crank's TDC mark must be under the TDC check hole's indicator
2 you have to simulate the tensioner by finger pressure
3 most importantly, you must look precisely at cylinder head seal level.
DO NEVER turn the crank around w/o cam tensioner in place or you WILL have to realign BOTH cams! BTDT
Edited by WRF-Rowdy, June 13, 2015 - 10:02 AM.