 123 Ignition Vacuum Adv, Learn me on some vacuum |
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| nditiz1 |
 Jul 11 2018, 06:59 AM
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#1
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Senior Member  Group: Members Posts: 1,177 Joined: 26-May 15 From: Mount Airy, Maryland Member No.: 18,763 Region Association: MidAtlantic Region 
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Ok so I'm currently running the 123ignition dist on my 2056 with dual webers. I read the instructions and don't understand the mapping. I also don't know how it all works together. Can someone educate me on the vacuum adv and what curve would be best? As the rpm's increase it creates more vacuum thus creating more adv, but if I already have a curve setup to go from 12 degrees at idle to 28 degrees at 3000+ will the vacuum adv move the timing even higher once it is hooked up and mapped?
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| nditiz1 |
Jul 12 2018, 06:04 PM
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#2
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Senior Member Group: Members Posts: 1,177 Joined: 26-May 15 From: Mount Airy, Maryland Member No.: 18,763 Region Association: MidAtlantic Region
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The whole reason behind the want to use vacuum adv with the standard curve on the 123 is due to my webers having a lean hole. John from aircooled.net seems to think if I have more advance at light throttle (transition between idle and main circuit) then it wont lean out. I have several different jets and have tried several different combinations to fix this lean hole. The best one has been setting the idle to a 55, but then I'm running real rich. Also it only allows for a 1/4 turn out on the mixture screw for highest idle. If I have more advance during the transition it should help with the "leaning out" Correct me if I'm wrong here.
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Posts in this topic
nditiz1 123 Ignition Vacuum Adv Jul 11 2018, 06:59 AM
Mark Henry On dual weber's you shouldn't run vacuum a... Jul 11 2018, 08:34 AM
72hardtop
On dual weber's you shouldn't run vacuum ... Nov 2 2018, 02:15 AM nditiz1 I'm not sure why Webers shouldn't use vacu... Jul 11 2018, 09:09 AM bbrock
I'm not sure why Webers shouldn't use vac... Jul 11 2018, 09:25 AM rhodyguy Isn't there a 123 that doesn't require a v... Jul 11 2018, 10:31 AM Mblizzard To echo what Mark said, after running the 123ignit... Jul 11 2018, 11:14 AM Philip W. So Mike, I will be installing mine soon, right aft... Jul 11 2018, 11:21 AM BeatNavy
So Mike, I will be installing mine soon, right af... Jul 11 2018, 11:40 AM Philip W. ok that is where I will start. My idle was about 1... Jul 11 2018, 11:51 AM Mblizzard
ok that is where I will start. My idle was about ... Jul 11 2018, 12:16 PM DRPHIL914
ok that is where I will start. My idle was about... Oct 29 2018, 05:39 AM Dave_Darling ...how about a more modern solution to the MPS??
... Jul 11 2018, 01:13 PM pete000 I am not using any vacuum on my 123 Jul 12 2018, 06:24 PM Mblizzard Phil
Don’t worry about the curve numbers. Set ... Oct 29 2018, 06:27 AM DRPHIL914
Phil
Don’t worry about the curve numbers. Set... Oct 29 2018, 07:35 AM BeatNavy Yes, IIRC the difference between curve 2 and curve... Oct 29 2018, 08:23 AM DRPHIL914
Yes, IIRC the difference between curve 2 and curv... Oct 29 2018, 08:40 AM Dave97 Has anyone installed the Bluetooth model? What di... Oct 29 2018, 08:22 PM pete000 I'm not using any vacuum advance on mine. Work... Oct 29 2018, 10:15 PM 914_teener Not that I run carbs......I run D-jet.
In my opin... Oct 29 2018, 10:59 PM DRPHIL914
Not that I run carbs......I run D-jet.
In my opi... Oct 30 2018, 08:09 AM |
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