Thats the piont i was trying to make in an earlier post about how much power is lost thru out the curve if your timing is locked out. Didnt get a good answer on that at the time. But it is easier to just lock it out and forget about it. I was just curious to how much could possibly be left on the table thru the rpm band with a pump gas 511 with a curve built in. How do you figure best curve?

511 with 4.375 bore, 11.25: static comp, mw victors with 330cc port flow 356@.650, solid flat tappet 270/276@50-.644/.615-110 installed 106, 1100 dominator, 2" header, 3400# car with 5000 stall.

The delay is in the electronics themselves ...

So glad you are posting about this. I felt like I was the only one here. And although I'm sure that's not quite true, it does seem like a secret. A stock class racer first told me about how the car always slower when they took out that heavy secondary spring from the DC distributor. I didn't learn the real reason for most of the delay until much later.

This is the reason for the solid line and the dashed line in the Direct Connection graph in post #11 here:
https://www.forabodiesonly.com/mopar/thr...post-1972040585
In theory the timing could increase (depending on the spring perch setting) but on a slow ECU, its flat, which is still a hell of a lot better than losing timing.

They set up the heavy spring and weights to counteract the delay in electronic switching (sometimes called slew rate). Every electronic operation takes time.

This secondary portion of the advance can't be done with all advance mechanism. That's with the MSD, my suggestion for Dave was to set it up to delay the 'all in' to a higher rpm. That way the slew will have less effect through the top of your power curve.
https://www.tapatalk.com/groups/racingfu...-less-t765.html

More links on slew in Innova 3568 Timing Light, now slew rate

LOL, you forgot few variables to add to the timing curve.
At peak volumetric efficiency (just past peak torque) needs the least amount of timing.
As volumetric efficiency is decreased more timing is needed.
At piston acceleration speed goes up (low gear) more timing is needed.

FYI I would love to locate a old distributor machine

Joe

That's pretty much what I've been explaining in a nutshell lol
Just in simple common internet terms lol
I'm afraid of talking over people's heads and them losing interest because they can't understand the terminology

Then spell it out. What makes you think we are too stupid to understand what you are saying? It might be you don't express yourself well.

Put it out there and let everyone learn at their own pace.

What you posted came off as incredibly arrogant.

Seems like everyone here is barking up the wrong tree.
I’ll ask again... is it a capacitive discharge/ multiple spark system?

I take it your question is about what system has a delay?

Seems like everyone here is barking up the wrong tree.
I’ll ask again... is it a capacitive discharge/ multiple spark system?

A 15 degree Brodix head wants like 22 degrees at 4,000 rpm and 28 degrees at 7,000 if that tells you anything

With a locked out distributor you have a backwards curve when you add in the slew rate, so the motor is off at all rpms