Bike in question is my '94 R1100RS - the "original oilhead." I'll have more pictures to post in my "main" thread on rebuilding Clifford's engine shortly, but I need help with a specific question. I'm not sure I have the valve timing right - setting the cam sprocket in the heads to the correct position. Here's the issue (All text from a BMW factory repair manual):
Manual says: "Right Cylinder at TDC on ignition stroke." Got it - marks on the crankshaft and the auxiliary shaft chainwheel are aligned just like the manual says - crankshaft at bottom, aux shaft at top. Flywheel has the pin thru the hole into the engine block. So that's all good.
Manual says: "Locating pin on right camshaft sprocket points downwards." Yep, no problem.
Manual says: "Mark (R or arrow) and the tip of tooth on right camshaft sprocket is precisely aligned with mark on timing gear carrier." Now here's the problem..... With the locating pin pointing down, the arrow on the left side of the cam sprocket points BETWEEN two teeth, not directly in line with one, like the manual shows. And with the locating pin pointing as straight down as I can eyeball it and the sprocket engaged in the chain, the tooth above the mark is lined up with the mark on the timing gear carrier. It looks like this:
When I spin the crankshaft 360 degrees, which spins the aux shaft 180, I should be ready to do the same thing with the left cam sprocket. The manual calls for the locating pin to be pointing up - which it is. So I end up with the tooth below the mark lined up on that side. Here's a pic of that side, at TDC on the ignition stroke:
The markings on the two sprockets are identical, so there's no right and left ones to get mixed up. I've V-E-R-Y carefully turned the engine thru by hand, and nothing is hitting or going "clunk" at TDC. But we all know things can be different spinning at 4000 rpm. So, do I have it right, or am I off by one tooth? Anybody want to go look at their bike and tell me how the sprockets are timed?