 Advance Curve for 123ignition on 2056 w/IDF-40's, Advance Curve Advice |
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| Gatornapper |
 Dec 7 2023, 08:32 PM
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#1
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Senior Member  Group: Members Posts: 1,215 Joined: 22-September 17 From: Woods west of Richmond, VA Member No.: 21,449 Region Association: South East States 
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Greetings fellow Teeners.......
Soon to get my '76 on road after 18 months of very slow work - taking my time. Tons of other projects going on too. Engine is now 2056 w/new P's & C's, heads, new dual IDF-40's about to go on, and a new 123ignition Bluetooth dizzy suitable for carbs or D-Jet (next year). For the Centrifugal Advance Curve, I programmed into my 123igntion dizzy a duplicate of the 050 dizzy advance curve from here: (IMG:https://hosting.photobucket.com/images/ac110/rahanes/914_Advance_Curves.jpeg) Vacuum line will not be used with the carbs. Many have thought the 050 advance curve to be the best for the 2.0. I've loved the performance of my 050 dizzy. Question: Is there a better advance curve for my new setup? Enquiring minds want to know...... Yes, I've read other threads here on curves for the 123 dizzy..... As always, TIA! GN |
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Replies(1 - 5)
| Gatornapper |
Dec 7 2023, 09:02 PM
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#2
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Senior Member Group: Members Posts: 1,215 Joined: 22-September 17 From: Woods west of Richmond, VA Member No.: 21,449 Region Association: South East States
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Admin's - please delete this thread.
TIA, GN |
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| flipb |
Dec 9 2023, 07:46 PM
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#3
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Senior Member Group: Members Posts: 1,722 Joined: 2-September 09 From: Fairfax, VA Member No.: 10,752 Region Association: MidAtlantic Region
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For what it's worth... My '74 is a 2056cc with dual 40 EMPI HPMX carbs (IDF clones) and I just had the 1-2-3 Distributor installed while my mechanic had it for other needed maintenance. He programmed in a stock-ish advance curve (gradual ramp to 28 degrees at 4800 RPM).
It drove... fine. Today I programmed in a clone of the Bosch 050 curve (based on this thread) and there was a big difference. More power and smoother delivery. Maybe the best it's ever driven. Really came to life. Felt great. I might go ahead and create saved files for the other curves here to experiment a bit. It's incredibly easy to do. |
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| anderssj |
Dec 11 2023, 10:23 AM
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#4
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Dog is my copilot... Group: Members Posts: 1,656 Joined: 28-January 03 From: VA Member No.: 207 Region Association: MidAtlantic Region
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QUOTE(Gatornapper @ Dec 7 2023, 10:32 PM)  Greetings fellow Teeners....... Soon to get my '76 on road after 18 months of very slow work - taking my time. Tons of other projects going on too. Engine is now 2056 w/new P's & C's, heads, new dual IDF-40's about to go on, and a new 123ignition Bluetooth dizzy suitable for carbs or D-Jet (next year). For the Centrifugal Advance Curve, I programmed into my 123igntion dizzy a duplicate of the 050 dizzy advance curve from here: (IMG:http://www.914world.com/bbs2/uploads_offsite/hosting.photobucket.com-207-1702311809.1.jpeg) Vacuum line will not be used with the carbs. Many have thought the 050 advance curve to be the best for the 2.0. I've loved the performance of my 050 dizzy. Question: Is there a better advance curve for my new setup? Enquiring minds want to know...... Yes, I've read other threads here on curves for the 123 dizzy..... As always, TIA! GN Sorry, but I can't figure out a couple of entries in the chart's key. I get that B-050 is the Bosch 050 dizzy, and that -009 is the old Bosch 009...but I don't recognize the others. I thought the old D-jet dizzys were all Bosch 039, but I don't see that one. And I'm not familiar with the L-jet dizzy--is that B-022? And I'm completely lost with "DM" and "RS" (no big surprise). Any help or hints would be greatly appreciated. As Gatornapper says, enquiring minds want to know... (IMG:style_emoticons/default/biggrin.gif) Thanks in advance! Steve A- |
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| 930cabman |
Dec 12 2023, 02:46 PM
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#5
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Advanced Member Group: Members Posts: 3,065 Joined: 12-November 20 From: Buffalo Member No.: 24,877 Region Association: North East States
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QUOTE(flipb @ Dec 9 2023, 08:46 PM) For what it's worth... My '74 is a 2056cc with dual 40 EMPI HPMX carbs (IDF clones) and I just had the 1-2-3 Distributor installed while my mechanic had it for other needed maintenance. He programmed in a stock-ish advance curve (gradual ramp to 28 degrees at 4800 RPM). It drove... fine. Today I programmed in a clone of the Bosch 050 curve (based on this thread) and there was a big difference. More power and smoother delivery. Maybe the best it's ever driven. Really came to life. Felt great. I might go ahead and create saved files for the other curves here to experiment a bit. It's incredibly easy to do. What cam are you running? I have heard the 050 curve works well |
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| flipb |
Dec 12 2023, 03:01 PM
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#6
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Senior Member Group: Members Posts: 1,722 Joined: 2-September 09 From: Fairfax, VA Member No.: 10,752 Region Association: MidAtlantic Region
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QUOTE(930cabman @ Dec 12 2023, 03:46 PM) QUOTE(flipb @ Dec 9 2023, 08:46 PM) For what it's worth... My '74 is a 2056cc with dual 40 EMPI HPMX carbs (IDF clones) and I just had the 1-2-3 Distributor installed while my mechanic had it for other needed maintenance. He programmed in a stock-ish advance curve (gradual ramp to 28 degrees at 4800 RPM). It drove... fine. Today I programmed in a clone of the Bosch 050 curve (based on this thread) and there was a big difference. More power and smoother delivery. Maybe the best it's ever driven. Really came to life. Felt great. I might go ahead and create saved files for the other curves here to experiment a bit. It's incredibly easy to do. What cam are you running? I have heard the 050 curve works well European Motorworks "G" cam. |
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