Hi guys. I Stripped down my 2010 Daytona 675 to check the valve clearances at the weekend. 6 shims ordered from Triumph. When I set the engine onto its correct timing marks as per the manual to remove the camshafts I noticed that to get the cam sprocket lines facing each other and parallel with the top of the head the dot on the crank sprocket was 3-4mm out of align with the mark on the crankcase and if I move the crank sprocket into alignment with the crankcase mark obviously the cam sprockets are now out of alignment. I have attached a couple photos to show the cam sprockets in the correct position when the crank sprocket dot and crankcase mark are out of alignment, if you zoom in you can just make out the dot 3-4mm to the left. Anyway I marked the positions myself and proceeded to remove the camshafts so I could measure my shims. New shims should be with me midweek. My question being, is this by any chance a common thing on Daytonas 2010 and I should just put it back together as I marked it or reset the timing to the exact position? The reason I ask is because this is the first valve Clearance service as the bike has done 13350miles ( I know I'm 1350 late) I bought the bike immaculate with 4500 miles in March 2015 so unless it had some warranty work and put back together poorly I don't understand how it got out of alignment. The bike runs perfect by the way, sweet and crisp, full power so is it a case of if it ain't broke don't try to fix it? Thanks in advance and sorry for such a long post
I suspect it's probably ok. Check out this thread for pictures of when I did my valve clearances. You can see when the punch mark is lined up the lines on the sprockets are not perfectly parallel. If the bike was running fine then I'd leave it as it is.
Best bet is to find out whether no1 piston is at tdc when the cam timing marks are in the correct position (dial gauge through the plug hole).
Would timing/cam chain stretch account for this? Would replacing it correct the problem? I have the same problem and need to replace the cam cover gasket (due to a leak from one of the half moons). I was thinking of doing the cam chain while it was all apart.
