Rev limiting rotor - where exactly is the tip?

[Alexandphoto]

Hi all!

My 911 sounds like it is in need of a valve adjustment.

I feel a bit silly to ask, but where exactly is the tip of the rotor to line up with the notch on the distributor? My crank pulley has 2 markings, one painted yellow and one painted white. I can’t see a “Z1” marking, so I want to be as sure as I can be that I’ve got it lined up correctly

Thank you

[Alexandphoto]

[RSTarga]

What year car? Brush some of the rust off your pulley and you might see the z1 mark.

[Alexandphoto]

Originally Posted by RSTarga

What year car? Brush some of the rust off your pulley and you might see the z1 mark.

Will give that a go thanks! Should’ve started there

It’s a 1976 911 S with a numbers matching 2.7

[Alexandphoto]

After a bit of cleaning I found some markings. Great suggestion!

Z1 aligns with the yellow pen marks, and the rotor seems to line up nicely with that too.

Also found the 120/240deg markings, and I’m halfway through adjusting the valves.

[GH85Carrera]

My 1974 914 2.0 had the same rev limiting rotor and markings for timing. One day my brother switched my rotor with one from a VW bug that stopped at 4,200 RPM or something way low. I left to go back to work, and it would shut off just as the power (limited as it was) started to come on. I knew what he had done right away, and turned around and made him put mine back on.

It is old technology, but it works in a simple way. Take your time, and get it right, and drive your car and smile the happy smile of success when done.

[Flat6pac]

Your rotation is clockwise on 2.7.
Looks like you’re a cog off because clockwise you should be coming up to the mark, not past it.
Bruce