Ignition curve

[Robbo D]

Hi guys.

I found this in an old post on here by COG. Is this curve for the 4 Ltr Rover V8. I think it might be but the old post wasn’t clear.

Rob.

[PabloGee]

Looks like it.
What are you working out?

[Robbo D]

Just playing around with the 123 distributor curves

[Belle427]

Seems to hit maximum centrifugal advance too early to be the lucas distributor, happy to be corrected.
Down the bottom of the page is a table derived from the lucas 35DLM8 distributor.
http://g33.co.uk/pages/technical-ignition-system.h...

[Robbo D]

Hi Belle.

That link doesn’t go anywhere?

[Belle427]

Strange, will try a screenshot.

[Robbo D]

Thanks Belle.

As I’m trying to get my head around all this I assume the top line of the graph is at idle. If so I can make the centrifugal curve based on these figures. I then need to plot the MAP curve for the timing added by the vacuum advance this is where I’m struggling.

Rob