Quote:
Originally Posted by long-gone
I'm assuming the car ran okay (besides the leaking gasket) prior to your project. So, it's probably in time now. Not sure if it's a fact but I've heard the M103s and 104s can run being a tooth off.
Now, I may be quite wrong, as I've never been into an M104 but I think the mark (TDC) on the balancer that you have in the center of the opening for the sensor, should actually be aligned with the bent tab just in front of it. The marks are a visual guide for the tech, which would be hidden from view if the sensor was in place. The sensor itself doesn't rely on the marks per se'.
Try lining it up with that tang and see if the drill bit or dowel you use in the sprocket holes line up right with the casting. BUT, like I said, I'm not sure, hopefully someone who really knows will verify this or tell you the right way.
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that's what i originally did, aligned it with the metal tab, but the cam was off on both sides. the closest i could get the holes in the cam to align with the surface of the head was when the TDC marking was in the center of the circle. this model year does not have a front TDC sensor (at least not in that location), and the shape of the pointer i have is different than the picture in the factory CD.
The car was running fine. this is the original timing, i have not loosened up the chain yet, i am just not sure if it should be like this when i replace the gasket, or is the timing off in its current condition???
confusing...