Dennis, Attached is the photo of the timing chain as I have reset it to the best compromise i can find. I took the picuter as centered and oriented correctly to the cam chain to minimize distortion. In this picture the cam sprockets have just been rotated 2 complete revelotions with the tensioner applying its load - so it should have reached it's "settle" postion (taught).
I've added measurements for the current allignment of the timing marks from the cyl head surface for the intake and exhaust marks. The exhaust timing looks about the best it is going to be. The intake timing is a bit more debatable - though perhaps this is just the best it will be without degreeing in the cams. If I rotate the intake 1 tooth CCW, the IN mark will be about 4.5 mm below the cyl head surface and the two marks on this sprocket will be slight more misalligned with the exhaust sprocket timing marks. So it seems like a no win situation. Marked version: http://groups.google.com/group/nighthawk_lovers/web/650%20CAM%20RE-TIMED%20SETUP.jpg Unmarked version: http://groups.google.com/group/nighthawk_lovers/web/650%20CAM%20RETIMED%20No%20markup.JPG I can tell the timing marks are not located that precise between the two sprockets. There are 42 teeth on a sprocket so it would seem the marks should both be alligned to the center of a tooth - not so (one side is alligned to the tooth while the other mark is alligned in between teeth). Like you said - it will never be perfect just because of the tollerances - and then there is the crank TDC tolerance. So maybe this is why they don't line up perfectly and a little chain stretch. Do you think it is good enough or should I be measuring TDC with a dial gage and then be measuring lift of a valve when at TDC to see where it really is? Thanks, Paul --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Nighthawk Motorcycle Lovers!" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/nighthawk_lovers?hl=en -~----------~----~----~----~------~----~------~--~---
