As far as I can tell I am at TDC-Compression for the horizontal cylinder by lining the double pulley up with the casing mark, the single belt pulleys with their respective marks and centering the flywheel mark in the timing "window"
Here's a pic of the timing mark, I just centered it in the window. The shop manual shows it lining up with another arrow which I don't seem to have.
(http://photos-a.ak.fbcdn.net/hphotos-ak-snc1/hs173.snc1/6495_517587124568_47701118_30712520_5658262_n.jpg)
sorry for the crappy pic, not easy to get.
The shop manual I'm using is for an 06 s2r 800, mine is an 07, perhaps that is why?
No once I had all this lined up I checked the clearance on the openers. When I tried to push the closing fork down with a screwdriver I could not move it as shown in chris' ducati tech video. I should be able to push down on the closing fork and be able to spin the shim freely and remove the collet if I need to but it isnt budging.
So the first thing which I think is reasonable to ask is if the horizontal is really at TDC-C. I stuck a screwdriver down the spark plug hole and the cylinder is there.
The whole process seems simple enough, I'm cautious when I do things for the first time which can get frustrating.
Ok, I spoke with HeMan and apparently the only way to know if you're at TDC-C rather than tdc-exhaust is just look at which valve is opening when. Duh?
thats the simpliest way. to me atleast with the belts off.
+1. Move it to TDC so you can't drop a valve into the cylinder but it's sooooo much easier if you remove the belts and can spin the cam shaft freely.
Also, for setting TDC there is the mark on the wheel and TWO arrows to line it up to. One is right near the window, the other is way down deep. You need to look straight in and maybe use a flashlight to see it. But if you just pull a spark plug and shine a flashlight in there you can see the piston come up plain as day.
Scott
Ok, I am nearly done with the valve check. It looks like I'm tight on only the openers and closers of 2 valves, so it is an easy adjustment.
My bike def. does not have two dots nor an arrow when looking in the timing window. Infact, it's not even a window its an allen keyed cap that screws into the case. I only have one mark, when I center that in the small "window" all my belt markings line up and the horizontal cylinder is at TDC-C. I verified this by watching valve operation. I also stuck a screw driver in the cylinder itself. When I do one 360 degee revolution and come back to this mark, the piston goes up and down twice, hence a complete 4 stroke cycle. I don't see how it could be any other way. Hopefully I am almost done here, its a love hate kinda thing...
Sorry to mislead, I thought the pic was of a glass window like on my bike.
Scott
Yeah, it is confusing. The service manual shows what you described so I was really scratching my head. I don't see any other way then what I described though.
Thanks for the help.
Not sure if this helps since you're working on a 800 and I was working on a 620 but I found that then my belt pulleys where lined up I could see the same mark on the fly wheel but mine also didn't line up with the arrows. I just used the pulley marks to re install the belts. The bike runs the same after. I also checked that I was on the compression stroke by putting my finger over the plug hole and rotated the engine till I felt pressure on my finger.
i dont know why your bikes are different from mine...
i have 2 marks on my fly wheel. and it takes two complete cycles to go form TDC back to TDC. going from one mark to another will get the TDC piston to go through the ignition stage, and if try to line up the fly wheels after tdc, ill have to go through 2 cycles just to get the fly wheel and all the pullys lined up, other wise they are all off by about 45 degrees....
OK, I think I see what is possibly going on here. For sure I have no arrows or other marks, only the one timing mark on the flywheel, that's a truth. When I align the double belt pulley (transmission pulley I think they call it) the mark is centered in the timing window. When I rotate the tranny pulley 360 degrees by turning the rear wheel in 6th gear (dont have the crank tool) the timing mark comes back around and centers in the window again. What I think is happening here is that the flywheel might actually be making two revolutions for every one rev. of the transmission pulley? That's the only way it makes sense to me... In this manner it would make sense that it covers a complete four stroke cycle as I posted before.
At this point its not a problem, I just like to know what was going on. There seems to be a lot of voodoo surrounding the minute differences between each model and model year.
Transmission pulley is the drive pulley (because it drives the other 2 pulleys)
and you are correct, which is why i dont think its possible for you to land on the same timing mark on the fly wheel and still be lined up on the pullys. if you line up the fly wheel once, and the pullys line up, you can call this a zero mark. spin the fly wheel 360 degrees, and the cams should only spin 180. so you need 720 degrees on the fly wheel to reach a full 4 stroke on the cams. atleast thats how I understand it. someone correct me before i blow my bike up.