You can't see the slots in the slotted pulleys. They are behind a big steel washer. The slotted pulleys have three screws on the face. Solid pulleys do not have the screws.I can't remember for sure, but I don't think the cam pulleys have slotted bolt holes. So if that is the case, I think you would have to install pulleys with slotted holes before you could alter cam timing.
My Factory Service Manual DVD shows a procedure for checking the cam timing but it says nothing about adjusting it.
So I just finished my 6k mi valve and belt adjustment and would like to check the cam timing before buttoning her up but have run into a snag. While my previous ST4s had only one spark plug located directly inline with the piston, making it easy to check for TDC, the ST3 has two at odd angles.
I tried a 10-1.0 x 50mm bolt to use as a stop tool but it does not want to screw in to the plug hole enough to work as a stop. Don't know if this is because of carbon buildup inside the cylinder or interference with the valves and I certainly don't want to bend anything.
Anyway, I'm here looking for suggestions on how to accurately set TDC on the ST3 or perhaps a diagram of a functioning stop tool.
Nice write up on checking the timing, but ultimately you still need adjustable pulleys or off-set keys to degree the cams. Are they available for ST3's?
You already have them. Ideally, as it has been explained to me, the OEM adjustable pulleys are for use with the method you posted. Kind of setting to the assembly spec timing when adjusting the belts. Supposedly, if things need to move off the key machined in the cam and fixed part of the pulley, you should still use the offset keys. That way when you tension the belts (IF you do it like you described and not just a regular tension like most do), you will be able to maintain the cam specs you set with the offset keys. Seems crazy to me. Just make use of the provided adjustable OEM pulleys and don't mess with it again! Might screw up the next owner, but whatever!Nice write up on checking the timing, but ultimately you still need adjustable pulleys or off-set keys to degree the cams. Are they available for ST3's?