Manifold Vacuum Advance what am I not getting?

[cpearce]

Yes once you convert Kpa to Hg in your head or on paper. EVERYTHING else is super easy. I installed the distributor in 30 minutes. Super nice unit, you can modify the curve on the fly while the car is running! Good family business. It’s all you need. No box is needed. All solid state with automotive rated parts. I am sold. I use my phone and have complete control. Well made unit.

Thanks very much!

How is the clearance to the wiper motor, any issues there?

 

[340inabbody]

Thanks very much!

How is the clearance to the wiper motor, any issues there?

It fits but you have to get the wire in the cap then install the cap.

 

[340inabbody]

Works fantastic by the way! There is no way I could have tuned my motor this well with springs. I have the wrong torque converter that is too tight and a high cammed motor. I was getting significant drop in rpm in gear with my msd set up. I used this programable distributor to increase timing just after crank to enable lowering of my idle out of gear. So just below 700 rpm then lower timing just after 900. This keeps the motor running in gear at almost the same rpm as out of gear. Simply amazing. Heres my current map.

 

[CFD244]

Works fantastic by the way! There is no way I could have tuned my motor this well with springs. I have the wrong torque converter that is too tight and a high cammed motor. I was getting significant drop in rpm in gear with my msd set up. I used this programable distributor to increase timing just after crank to enable lowering of my idle out of gear. So just below 700 rpm then lower timing just after 900. This keeps the motor running in gear at almost the same rpm as out of gear. Simply amazing. Heres my current map.

View attachment 1716317489

Excuse my ignorance, but what are the numbers in the vertical ledger (20-101)?

 

[340inabbody]

Excuse my ignorance, but what are the numbers in the vertical ledger (20-101)?

Thats vacuum measured in kPa. Wish it was in Hg. It’s opposite so 100Kpa is 0 Hg you have to convert.

 

[Bewy]

^^^^ No
1" of Hg = 3.4 kpa, so 100 Kpa is about 30" of hg.

 

[CFD244]

Excuse my ignorance, but what are the numbers in the vertical ledger (20-101)?

......And the numbers in the middle are timing btdc?

 

[340inabbody]

^^^^ No
1" of Hg = 3.4 kpa, so 100 Kpa is about 30" of hg.

Yes as a direct conversion BUT I wasn’t clear. The Y-axis is MAP or Manifold Absolute Pressure.

MAP = Barometric Pressure - Vacuum

Then you have to convert to Kpa if your using In-Hg for Baro and Vacuum.