Quote:
Originally Posted by sphanna
There was an excellent post by a well respected engine builder a while back that described the max timing for original and HC engines. 21* for 6;1, 23* for 5.5;1 and never above 28* for stock 4.2 head.
I very much would like to find this post. I. printed it so as to have this info but I have misplaced it. Can any one direct me to this post? My search was unsuccessful. Thank you..
|
This leads to some questions:
1. Where do you set the spark lever to arrive at these settings? It would require fabricating a timing pointer and marking TDC on the pulley, then using a dial-back timing light, and finally marking the timing quadrant so you know where to set the lever.
2. What octane fuel was used to determine these settings? Different octane levels require different timing settings.
3. At what RPM would you go to these "max settings"? Idle? 1,000 RPM? 2,000?
I don't think you can use a 'one size fits all' timing number.