Right then. Non clockwork ignition_makes?

[Kccv23highliftcam]

As title. Looking to move on from weights and springs, what, or rather who, do replacement mapped ignition modules these days?

[GreenV8S]

If you are ditching the dizzy and going to CoP or wasted spark, you could consider MegaJolt.

What are you proposing to use for timing?

[PeterBurgess]

We have had good results with Aldon Amethyst module. If 'they' do one for your engine the Albertronics 123Tune complete programmable distributor works well.

Peter

[PositronicRay]

Another vote for the 123 kit. Well made, easy to fit and set up, online advice re advance curves plus a helpful forum. It even looks like a dizzy if that's important to you.

[tapkaJohnD]

Dave Walker's company produced the Emerald system, and Haynes published his book, with CD-ROM of sotfware about the subject.
https://www.abebooks.co.uk/book-search/title/engin...

JOhn

[Kccv23highliftcam]

Good bit of advice that, I'll go dig it out, [its been a while]

[spitfire4v8]

I don't know anything about the amethyst but I was left unimpressed by the 123 dizzy. It's not live mappable, and it's not actually proper 3d mapping anyway. You'd be much better with a true mappable system, like an ecu using just the ign part, or megajolt. You can still keep the dizzy to distribute the spark if you run a crank based trigger system too if you must have a dizzy in the engine bay.
My Stag runs a ms2 running the ignition and retains the stromberg carbs for the moment, my Tuscan racer runs an early Omex but both use the dizzy to distribute the spark and both are proper 3d and live mappable.

[Kccv23highliftcam]

spitfire4v8 said:

I don't know anything about the amethyst but I was left unimpressed by the 123 dizzy. It's not live mappable, and it's not actually proper 3d mapping anyway. You'd be much better with a true mappable system, like an ecu using just the ign part, or megajolt. You can still keep the dizzy to distribute the spark if you run a crank based trigger system too if you must have a dizzy in the engine bay.
My Stag runs a ms2 running the ignition and retains the stromberg carbs for the moment, my Tuscan racer runs an early Omex but both use the dizzy to distribute the spark and both are proper 3d and live mappable.

Great that's about what I'm looking at; twin 40's but get a proper mapped ign advance set up.

[GreenV8S]

spitfire4v8 said:

I don't know anything about the amethyst but I was left unimpressed by the 123 dizzy. It's not live mappable, and it's not actually proper 3d mapping anyway. You'd be much better with a true mappable system, like an ecu using just the ign part, or megajolt. You can still keep the dizzy to distribute the spark if you run a crank based trigger system too if you must have a dizzy in the engine bay.
My Stag runs a ms2 running the ignition and retains the stromberg carbs for the moment, my Tuscan racer runs an early Omex but both use the dizzy to distribute the spark and both are proper 3d and live mappable.

Do you keep the sprung and vac advance mechanisms in place to avoid running out of range on the timing? I've heard of people who didn't and ran into trouble.

[Kccv23highliftcam]

I believe locking the cent/spring advance is the first step.

Some use ss locking wire but I think brazing or spot welding would be better..

Peter, Albertronics 123Tune Wow, now that is a package, unfortunately not for me.

Edited by Kccv23highliftcam on Thursday 6th September 14:44

[GreenV8S]

Kccv23highliftcam said:

I believe locking the cent/spring advance is the first step

You planning to use the points for timing? Locking the advance would make sense from that point of view but the rotor arm tip width will limit the timing range available. A crank/cam sensor would mean you don't depend on the dizzy for timing so you can afford to leave the advance mechanism unlocked.

[Kccv23highliftcam]

GreenV8S said:

Kccv23highliftcam said:

I believe locking the cent/spring advance is the first step

You planning to use the points for timing? Locking the advance would make sense from that point of view but the rotor arm tip width will limit the timing range available. A crank/cam sensor would mean you don't depend on the dizzy for timing so you can afford to leave the advance mechanism unlocked.

Ah had to think about that, but yes, in case you want to revert?

Emerald site is a good read for info..

"Distributor based systems
Distributor-based systems use a conventional distributor to trigger the EMS but the distributor will have no in-built advance mechanism. Typically the trigger will come well before the ignition pointand the EMS will work out when to fire the ignition coil. The spark is then carried to the appropriate cylinder in the conventional way via the rotor arm and HT leads."

[spitfire4v8]

GreenV8S said:

spitfire4v8 said:

I don't know anything about the amethyst but I was left unimpressed by the 123 dizzy. It's not live mappable, and it's not actually proper 3d mapping anyway. You'd be much better with a true mappable system, like an ecu using just the ign part, or megajolt. You can still keep the dizzy to distribute the spark if you run a crank based trigger system too if you must have a dizzy in the engine bay.
My Stag runs a ms2 running the ignition and retains the stromberg carbs for the moment, my Tuscan racer runs an early Omex but both use the dizzy to distribute the spark and both are proper 3d and live mappable.

Do you keep the sprung and vac advance mechanisms in place to avoid running out of range on the timing? I've heard of people who didn't and ran into trouble.

Hi Peter


The two cars are set up differently in that the tuscan racer has a crank based trigger setup but I must confess I've never looked inside the dizzy to see if the shaft is locked or still advancing.

The Stag uses the lumenition Optical trigger inside the dizzy, and the mechanical advance mech is still working. I then use the MS to give a trim over and above the advance mech where needed. Makes for an unusual ignition table!