Ignition advance curve on 3.2 with carbs?
Posted: Mon Apr 22, 2019 6:55 am
Hello,
I could do with some guidance, I have fitted a fully programmable 123/ignition distributor to my 3.2 which runs carbs with 38mm chokes. I am not sure what the best timing curve would be? Thought I would start with,
RPM BTDC
1000 - 10
1500 - 14
2000 - 20
2500 - 25
3000 - 30
3500 - 32
4000 - 32
6000 - 32
There are two switchable programs and wondered if maybe I should be more aggressive? Maybe 35 at 3500 rpm?
I have read countless posts and everything seems to be different given the many parameters. I cant find a curve for 3.2 only lower CR 3.0 SC and 2.7 S etc on carbs. The original factory data map looks way to complicated. Pelican posts all seem to be on lower octane fuel.
I need to get it running well enough to allow me to get it to the rolling road. No ECU when I fitted the engine to my speedster and I love the sound of the induction roar.
Guidance really appreciated.
I could do with some guidance, I have fitted a fully programmable 123/ignition distributor to my 3.2 which runs carbs with 38mm chokes. I am not sure what the best timing curve would be? Thought I would start with,
RPM BTDC
1000 - 10
1500 - 14
2000 - 20
2500 - 25
3000 - 30
3500 - 32
4000 - 32
6000 - 32
There are two switchable programs and wondered if maybe I should be more aggressive? Maybe 35 at 3500 rpm?
I have read countless posts and everything seems to be different given the many parameters. I cant find a curve for 3.2 only lower CR 3.0 SC and 2.7 S etc on carbs. The original factory data map looks way to complicated. Pelican posts all seem to be on lower octane fuel.
I need to get it running well enough to allow me to get it to the rolling road. No ECU when I fitted the engine to my speedster and I love the sound of the induction roar.
Guidance really appreciated.

