The Ford Barn - View Single Post - Adjusting initial advance with a 3 bolt helmet dist....

Hoop · 08-19-2014, 06:53 AM

"The machined slot is usually 12 degrees , 6 up and 6 down. So the adjustment would allow 6 degrees of advance, assuming the break set of points is perfect at 27 degrees of dwell."

Bubba did not tell you that he was talking about "distributor" degrees, not crankshaft degrees. Since most folks are interested in degrees of crankshaft advance, the scene changes a little.

Also, I can't tell which distributor "Blown" is working with, but 27 degrees of dwell is a very early spec ... 22 1/2 for later distributors with separate points.

So, what is the max advance for a 11A distributor? (Note that 11A is 11 degrees of distributor Advance ... x2 = 22 at the crank.)

How much advance are you figuring you're going to need?

08-19-2014, 06:53 AM	#14
Hoop Senior Member Join Date: May 2010 Location: Jacksonville FL Posts: 1,137	Re: Adjusting initial advance with a 3 bolt helmet dist.... "The machined slot is usually 12 degrees , 6 up and 6 down. So the adjustment would allow 6 degrees of advance, assuming the break set of points is perfect at 27 degrees of dwell." Bubba did not tell you that he was talking about "distributor" degrees, not crankshaft degrees. Since most folks are interested in degrees of crankshaft advance, the scene changes a little. Also, I can't tell which distributor "Blown" is working with, but 27 degrees of dwell is a very early spec ... 22 1/2 for later distributors with separate points. So, what is the max advance for a 11A distributor? (Note that 11A is 11 degrees of distributor Advance ... x2 = 22 at the crank.) How much advance are you figuring you're going to need? __________________ "Remember that when it comes to intelligence, half of all of us are below average."