Advance Timing for a Weber Carbureted 2.7

[supradan]

Hello everyone,

I recently purchased a 1977 911S with weber carbs. This weekend I went through and replaced the points with the Pertronix Ignitor ll with the adaptive dwell feature. I went ahead and set the timing at idle. However I know at some point you also need to set the timing at 6000 to 35 +/- 3 degrees. In reading through the procedure, I need to remove the vacuum line going to the distributor and then set the timing at 6000 rpm. When I went to look for the vacuum line, it seems that the line has been already removed an capped (see pic below). I was told that with the line already being disconnected and with the car having carbs, I do not need to set the timing at 6000. Is this true that I do not need to set the timing at 6000 being that the vacuum line has eliminated?

Also, if I do need to set the timing at 6000, I have a timing light with a dial for various degrees, do I just set the dial to 35 and then set the timing using the Z1 mark on the crank pully?

Any help you can provide, is greatly appreciated. Thank you!
Daniel

[supradan]

Here is a pic of the distributor

[john walker's workshop]

It's going to get full advance well before 6000. Shoot for 30 for starters and see how it runs. 35 is pushing it, maybe 32 max. Yes, set the light at 30 and rev until it doesn't advance anymore and hits Z1. Then turn the distributor so it does.

[supradan]

Thank you John, that's what I thought.

Do I need to uncap it to do the advance timing or leave it caped (I imagine you need to uncap the hose)?

[john walker's workshop]

No difference.

[supradan]

Thank you sir!!!