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-   -   Timing for 73 2.4 CIS with Pertronix (http://forums.pelicanparts.com/porsche-911-technical-forum/771881-timing-73-2-4-cis-pertronix.html)

MackGuy 09-17-2013 06:57 AM

Timing for 73 2.4 CIS with Pertronix
 
Just a question for all. I am getting ready to do a Pertronix swap in my 73 T 2.4L CIS... I did a search but didn't find anything as far as what is the correct timing to set this to. Engine is otherwise stock to my knowledge.

Thanks!

Bob Kontak 09-17-2013 07:18 AM

Wouldn't you want to set it at factory timing specs with a timing light?

Arne2 09-17-2013 08:27 AM

Bob is correct. The Pertronix is simply a different method to trigger the coil. The timing should be the same as with any other ignition.

MackGuy 09-17-2013 12:18 PM

Fair enough, but what is factory timing spec?

stlrj 09-17-2013 04:55 PM

5 degrees ATDC. Your crankshaft pulley should have a TDC mark and the 5 degree ATDC should be the mark just to the left.

Peter Zimmermann 09-17-2013 05:15 PM

Quote:

Originally Posted by stlrj (Post 7661527)
5 degrees ATDC. Your crankshaft pulley should have a TDC (aka Z1) mark and the 5 degree ATDC should be the mark just to the left (counterclockwise).

Set at 900 rpm (warm idle).

stlrj 09-17-2013 05:20 PM

Quote:

Originally Posted by Peter Zimmermann (Post 7661550)
Set at 900 rpm (warm idle).

Vacuum line connected.

Peter Zimmermann 09-17-2013 05:21 PM

Quote:

Originally Posted by stlrj (Post 7661556)
vacuum line connected.

bingo!

dicklague 09-17-2013 07:21 PM

I have a pertronix in my 1973 and it works well. Been in there for 7 years or so and needs no maintenance.

MackGuy 09-20-2013 12:57 PM

Thanks, all good info!


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