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I have a new to me 3.0CS with a 3.5 M30 transplant from ???

I'm not sure what year this motor is? It has the typical Bosch distributor with the side mount manifold with 2 weber down draft carbs. 32/36 I think.

Have quite a few running issues with this motor.
Had to add a electric fuel pump and recently Petronix breakerless ignition.

In a effort to check the timing I could not find the typical round ball that would be embedded in the flywheel? Like in the pictures. I put the car in gear and rolled it to watch the flywheel as it made a 360 turn. I found a built up area with a typical hash mark across the edge of the flywheel. I put some paint on it to be easier to see. I also found some other hash marks across the edge although not as prominent as the built up one.
I hooked up the timing light and followed the guide from this site on setting the timing.
Long story short I could not see the mark I put the paint on. I moved the dist back and forth until the engine would die?
Finally I just set the dist at a point where is seemed to sound about right and would rev up from there. It also so idled reasonably well.
I did find a two round dots that were on the leading edge of the flywheel facing the starter gear.
So are some of the flywheels marked differently that what is considered the norm.
How do you know what mark is the right one?
Thanks
Gary

m5bb wrote:I have a new to me 3.0CS with a 3.5 M30 transplant from ???

I'm not sure what year this motor is? It has the typical Bosch distributor with the side mount manifold with 2 weber down draft carbs. 32/36 I think.

Have quite a few running issues with this motor.
Had to add a electric fuel pump and recently Petronix breakerless ignition.

In a effort to check the timing I could not find the typical round ball that would be embedded in the flywheel? Like in the pictures. I put the car in gear and rolled it to watch the flywheel as it made a 360 turn. I found a built up area with a typical hash mark across the edge of the flywheel. I put some paint on it to be easier to see. I also found some other hash marks across the edge although not as prominent as the built up one.
I hooked up the timing light and followed the guide from this site on setting the timing.
Long story short I could not see the mark I put the paint on. I moved the dist back and forth until the engine would die?
Finally I just set the dist at a point where is seemed to sound about right and would rev up from there. It also so idled reasonably well.
I did find a two round dots that were on the leading edge of the flywheel facing the starter gear.
So are some of the flywheels marked differently that what is considered the norm.
How do you know what mark is the right one?
Thanks
Gary

Here is the answer to this question in case someone else encounters this.

Appears you could have a flywheel from a manual Motronic 1.1 engine.
That raised area is the TDC section that is read by one of the 2 magnetic position sensors on the bell housing. As a guess, I would say that it is about 120 degrees away from the window where you would look for the T l O mark that is on the flywheel for normal timing purposes. Set your front dampener correctly and then paint the TO mark on the flywheel. Count 7 teeth from there to have the correct mark for setting your distributor and paint that spot too.