Dampener scale

[leppee]

Hi
I try to set my timing on  my  280 sl 1970 ,whitch scale will i use ,the inner scale or outer on the dampener
Pekka

[garymand]

I have put some white paint on mine.  You can find it by pulling the vacuum off and changing the rpms slightly with the light on the numbers.  It should be somewhere in the 0 to 15 range.  (I seem to remember it is on the block side, but I've got CRS. but its not that hard to figure out which is the right scale, the other scale is way off.)

[leppee]

Hi
I got it i set the pulley on 20 the inner scale and pull out the FI it took about 3h ,and the FI was off set,and put it back took 2h
And no more black smoke
Pekka

[ja17]

Hello Pekka,

Great, it looks like you have your problem solved.

For future reference on the two timing scales............Originally the crankshaft counterweight had only one scale, the front scale closest to the radiator. It was used in conjunction with a trapezoid, mostly rectangular pointer. This rectangular pointer had one corner clipped to form a angular cut.  The position of this first version was difficult to see from above. The factory replaced this version with a triangular pointer in a different location on the block. A new second scale was added to the counterweight for the new pointer and the old scale was left in place. This later version was closest to the engine block.  If you have a Factory Shop Manual (BBB), go to page 00-7/2 for more details and pictures. The two scales are 40 degrees off-set form each other.

Be sure to use the correct scale for your engine when setting ignition timing, setting the injection pump, and setting the valve timing (camshaft).