 123 Ignition Distributor Timing Curve, Curve for carbureted 2056 |
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| SteveNMaine |
 Feb 19 2025, 10:36 AM
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#1
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Member  Group: Members Posts: 94 Joined: 12-August 24 From: Maine Member No.: 28,288 Region Association: None  |
I am looking for the basic timing curve settings for a 123 TUNE+ 4-R-V-P distributor for a dual 40 IDF carbureted 2056.
I have been all over the different forums and really looking for more specific information for my build. Thanks. |
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| McTyke |
Oct 13 2026, 02:17 AM
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#2
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Newbie Group: Members Posts: 2 Joined: 8-October 24 From: Aberdeen, UK Member No.: 28,397 Region Association: None |
I have a switch model 123ignition on my 2258 cc engine with Eurocams J Grind camshaft and Weber 44 IDFs. Need to check, but I don't think there is a vacuum connection to the distributor. It's running okay with switch setting "C" but there's some popping or misfiring in the lower rpm range, and cold starting is sometimes tricky (that may be me though). Dynamic timing has been set at 30 * BTDC maximum.
I'd like to know what each of the preset advance curves looks like, but all I can find is the table that's in the 123ignition user manual. Do I assume each preset curve is a straight line between the start and end points? I can't imagine this is the case. 123ignition advised me that either curve C or curve 3 should be good for this engine set up. Any comments or advice from the forum would be great! |
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Posts in this topic
SteveNMaine 123 Ignition Distributor Timing Curve Feb 19 2025, 10:36 AM
flipb Here are some of the standard Bosch curves. I... Feb 19 2025, 11:05 AM
JamesM Assuming you have the fully programable model, it ... Feb 20 2025, 02:13 AM 930cabman I am running an aftermarket 009, works great. I... Feb 19 2025, 02:15 PM VaccaRabite
I am running an aftermarket 009, works great. I... Feb 21 2025, 06:52 AM Jack Standz
Here are some of the standard Bosch curves. I... Feb 20 2025, 01:30 AM flipb
[quote name='flipb' post='3192631' date='Feb 20 2... Feb 20 2025, 03:19 PM Jack Standz So why I was asking is this. If the initial advan... Feb 20 2025, 01:43 PM JamesM
So why I was asking is this. If the initial adva... Feb 20 2025, 10:38 PM 914_teener
So why I was asking is this. If the initial adva... Feb 27 2025, 01:05 PM brant 38-44 is too much
Shot for 30 depending on your a... Feb 20 2025, 02:19 PM flipb Adding to the above -- for what it's worth, I... Feb 20 2025, 03:25 PM Jack Standz @flipb
OK, thanks for the response.
Just to cl... Feb 20 2025, 04:59 PM flipb
[b]@[url=http://www.914world.com/bbs2/index.php?s... Feb 21 2025, 07:53 AM SteveNMaine
[b]@[url=http://www.914world.com/bbs2/index.php?... Feb 24 2025, 06:46 AM flipb
[quote name='flipb' post='3192885' date='Feb 21 2... Feb 24 2025, 07:34 AM iankarr Since every engine is different, and the benefit o... Feb 24 2025, 09:05 AM SteveNMaine
Since every engine is different, and the benefit ... Feb 27 2025, 07:24 AM SteveNMaine
Since every engine is different, and the benefit ... Jul 3 2025, 11:11 AM IronHillRestorations If you have the Bluetooth version, I can email or ... Feb 27 2025, 07:34 AM SteveNMaine I still have not been able to get my 2056 to start... Jul 3 2025, 08:53 AM IronHillRestorations I’m going to suggest that you have installed the... Jul 3 2025, 11:00 AM densible1 That's exactly what happened to me , wasn... Jul 3 2025, 11:13 AM SteveNMaine
That's exactly what happened to me , wasn... Jul 3 2025, 12:11 PM emerygt350 Those curves are supposed to be identical to the m... Oct 13 2026, 05:37 AM |
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