The Ford Barn

Brian · 09-16-2018, 02:09 AM

Regarding all the variations of front mount distributors, does anyone have a graphical representation of the various advance curves/ RPM?

ford38v8 · 09-16-2018, 02:24 AM

I believe the advance curve graphs are depicted in the Service Manual.

Lawrie · 09-16-2018, 04:53 AM

Brian ,I have mapped some out on graph paper,three curves on each dist ,one high vacum,one low vac with brake in and one low vac with brake out.
Lawrie

35fordtn · 09-16-2018, 08:51 AM

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The curves woulda vary from distributor to distributor because the vacuum brake... I have a chart at work that is crudely hand drawn above my sun machine that depicts the 40-a, 40-b, 68, 99, and 11A advance curves. If I remember I will post a photo Tommorow. This graph shows the curve without the vacuum brake installed. I use little to no tension on the vacuum brake, but this takes work as the weights have to be very free, shaft polished and weight springs in perfect condition

09-16-2018, 02:09 AM	#1
Brian Senior Member Join Date: May 2010 Location: Masterton, New Zealand Posts: 3,834	advance curves Regarding all the variations of front mount distributors, does anyone have a graphical representation of the various advance curves/ RPM? __________________ Unfortunately, two half wits don't make a whole wit!

09-16-2018, 02:24 AM	#2
ford38v8 Senior Member Join Date: Jul 2011 Location: SF Bay Area Posts: 6,645	Re: advance curves I believe the advance curve graphs are depicted in the Service Manual. __________________ Alan

09-16-2018, 04:53 AM	#3
Lawrie Senior Member Join Date: May 2010 Location: Qld, Australia Posts: 4,215	Re: advance curves Brian ,I have mapped some out on graph paper,three curves on each dist ,one high vacum,one low vac with brake in and one low vac with brake out. Lawrie

09-16-2018, 08:51 AM	#4
35fordtn Senior Member Join Date: Aug 2010 Location: McMinnville, TN Posts: 2,327	Re: advance curves Sponsored Links (Register now to hide all advertisements) The curves woulda vary from distributor to distributor because the vacuum brake... I have a chart at work that is crudely hand drawn above my sun machine that depicts the 40-a, 40-b, 68, 99, and 11A advance curves. If I remember I will post a photo Tommorow. This graph shows the curve without the vacuum brake installed. I use little to no tension on the vacuum brake, but this takes work as the weights have to be very free, shaft polished and weight springs in perfect condition