The collective wisdom will help you get there. Between Rob (other Rob), Mark, etc. and others it will happen. As Mark mentions, important thing is to get it running, even if roughly, and tweak from there. I don't know the best curve, timing, or advance for carbs, but the nice thing is you can adjust it from your phone, without pulling the dizzy (well, maybe not the timing -- that still needs to be done somewhat the old fashioned way). At that point you can experiment. The D-Jet model (w/o Bluetooth) we have to pull the dizzy to change curve.

Then you'll be screaming

The forum is priceless, the Force is Active

FYI I followed your directions and After programming my advance curve, fired right up! I need to fine tune it later after driving a few times and reading up more on fine tuning the curve. I took it for a short drive, very responsive and not pinging etc. Thanks again for all your help

Pics

Congrats, Roy! Now drive that Raby 2270 for all it's worth!!

Curious what you are running for total advance. 29 degrees of distributor advance seems like a lot unless your timing before the advance starts is close to zero. And if that’s the case your idle timing is only a couple degrees BTDC whereas my 1911cc doesn’t idle well at less than 8 degrees BTDC.

Raby is a stickler not to mess with or change his factory timing settings: From my Raby 2270 build book he shows the engine was set at Initial Advance at 9 degrees and at 3000 rpm at 28 degrees. So I went into the Centrifugal Curve settings and set them at those settings. So far so good.

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When you set the curve using the 123 app are you setting total advance, or advance from initial? If the latter, then I would agree that 29 is too much. If the former, probably good. Raby shoots for total advance in his engines between 27 to 31, IIRC.

Rob I think your correct, I’ve tried a couple of changes in the settings and ended up with setting the initial at 1000rpms at 9.0 degrees and at 1500rpms at 10.0 degrees and 3000rpms at 28.0 degrees and 4000rpms at 28 degrees and 8000rpms at 29 degrees. Seams to idle smoothly and accelerate smooth. Will need to take it out a few times and see how its pulling under load to see if I need to readjust. Pouring down rain today (liquid sunshine), at least its above freezing! Thanks again

If any other 914World members are running a similar setup with the Raby 2270 engine or similar engine With the Bluetooth 123ignition, could Post/reply with the Advance Curve they’re using, I would appreciate it. Thanks-Happy Holidays

Can anyone share the curve for a carb’d 2056 with a mild cam?

I thought I would add this for others, if it applies to there application. I have a 74-914 with a built Type 4 2270 engine with dual 44 Webers. I purchased the 123Ignition and after setting the Centrifugal Curve was wondering about setting the Map Curve if applicable. Anyhow I couldn’t get a definitive answer so I sent a message to Ed Madak with 123Ignitionusa,LLC who responded the following:

Ed Madak

Dec 29 at 4:39 PM
It is ok to set the map at 0. In actuality if you had not changed it the outcome would have been the same.Because there is no vacuum to cause the map to come live.

Hope this helps
Ed


Thanks Ed for your quick response. Happy Holidays and Happy New Year! Roy

Hi, all. Can I get someone's known-good timing curve for a stock 2L D-Jet engine? Thanks!

Anyone use these with MSD ignition? I have heard that they may not be compatible?

I had no problems with the 123 and MSD except I had to replace the MSD Blaster coil with Bosch blue coil because the impedance on the Blaster was not correct for the 123. It’s been a couple years and a couple thousand miles with no issues.

That's interesting.. I might have to look at a 911 style coil..

I just checked the website and 123 recommends a coil with at least 1.0 Ohm primary resistance on 4- and 6-cylinder engines.

So what coil fits into that range?

Stock Blue bosch will work. As will the flamethrower P/N 40611 3 ohm coil.

Looks like the 911 guys run with a blaster coil and trigger with the white wire from the msd.. Seems simple enough.

I'm going to chime into the 'what setting' debate...

I have a standard 73/74 (have never been quite sure which...) d-jet 1.7 with a retard and advance (2 pipe) distributor, and after reading the pbanders site set the 123 to '1': after all, the retard is just there for emissions and the advance will make the throttle response a bit peppier... We set the timing to 27 degrees at 3500 with the vacuum lines off.

One immediate effect was that the idle went up by around 500rpm. That's fine, it can be corrected for. But then I started getting the impression that the exhaust was smellier. Fine in the country, but in London with lots of idle, you notice it... And on reading, advancing the idle by 10 degrees might double NOX and hydrocarbon emissions...

So I just tried connecting the retard line and putting it on setting 'A', which gives factory idle retard. This seems to work nicely: smooth idle (I think because the 123 is rock solid) and to my surprise the throttle response is just fine (I don't really notice a difference with '1') and it pulls strongly and smoothly through the range. With my old distributor there was mild bogging from 1000 to 1500 and a hesitation at 2000-3000rpm. I also have a wideband AFR meter and everything is between 11.5 and 15...

So the upshot is: if you have a 74 or later, the factory correct setting is probably 'A', and actually it works really well...

alex

Hey guys. I'm install my 123ignition on a dual carb setup and not having much luck. It's stupid to say but I think I'm having wiring trouble for only three wires.
The engine is on a stand outside the car.

What I have connected is the red wire to coil (+), the blue wire connected to the battery (+), and the black wire disconnected per the instructions.

The LED does not illuminate. No green. No anything.

What am I doing wrong?

-m.

Disregard. The blue wire goes to battery negative.

Any new developments with the 1-2-3s ? Mine had worked perfect since installation

Hi

I'm interested in purchasing a 123 distributor for my 2270. Is there a point of contact on the World or a recommended website to purchase from?

Thanks

Been running mine for a few years without any issue. Was worried that it may not last given how hot it gets, but so far so good.

I'm interested in buying one as well. Was hoping for another Group buy offer but no luck so far...