View Single Post
Old 09-30-2020, 02:38 PM   #21
Jim/GA
Senior Member
 
Jim/GA's Avatar
 
Join Date: May 2010
Location: Young Harris, GA
Posts: 1,821
Default Re: Ignition timing question

Quote:
Originally Posted by fred93 View Post
<snip>
I then adjusted the timing (making it more advanced).

The reading after all that was :

With lever all the way up---5* retarded.

With the lever all the way down--45* advanced.

With the lever half way down---30* advanced.

Seems to me that I need to adjust again so that with the lever all the way down I would have 30* advanced.

Thoughts on this please!
Fred-
The stock Model A distributor spark lever is *supposed* provide a total of 40 crank degrees of timing change (20 degrees of rotor change). So if you are starting at 5* AFTER TDC at the top, moving the timing lever all the way down should bring you to 35* BEFORE TDC.

Please check the readings that you report above again.

You should not be able to go from 5* ATDC to 45* BTDC. That is 50* of change. Something is not right. Maybe you misread something or wrote it down wrong.

.
__________________
Jim Cannon
Former MAFCA Technical Director
"Have a Model A day!"
Jim/GA is offline   Reply With Quote