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> Mallory ignition questions, Partial success!
VaccaRabite
post Oct 10 2010, 05:59 PM
Post #1


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My carbed 2056 uses a Mallory Unilite ignition. All summer long I have been fighting intermitant misses leading to the motor dieing at idle. After dicking with the carbs and adding fresh spark plugs, I am now moving to ignition.

So here is how my system is set up.

Bosch blue coil.
Mallory Unilite ignition.
The ignition is behind a resistor block.
MSD spiral wound plug wires.
NKG b5es plugs pregapped (one heat range hotter then stock as suggested in the resent spark plug thread) .

My tach is not dancing when I have a miss. The idle indicated drops as expected, no drama. So I don't think that the coil is grounding out or arcing.

As I understand the Mallory dizzy, it either works or it does not work, and there is not a lot of in-between.

My primary suspects are the plug wires. I am using the MSD spiral wound wires suggested for use with the Mallory, and I have only been using them this season.

Since you are not supposed to use the regular plug wires with a Mallory (as they can somehow cause the optical unit to burn out) buying replacement wires on a hunch is kinda expensive. Am I chasing my tail with this?

Also, I am using the stock gap. I think I am supposed to be able to use a wider gap with the Mallory, which will give better ignition. What kind of gap should I be shooting for? If it does turn out to be the plug wires as the problem area, should I go back to the stock heat range plugs, or stay with the hotter ranged plugs?

Oh, and for the "go back to FI" crowd, my motor is using a cam that would cause D Jet to commit suicide. In this case, it is not an option.

Zach
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Posts in this topic
Vacca Rabite   Mallory ignition questions   Oct 10 2010, 05:59 PM
jaxdream   Running the stock gap you probably ok on , I'd...   Oct 10 2010, 06:42 PM
zx-niner   When you say the ignition is behind a resistor blo...   Oct 10 2010, 10:22 PM
orange914   When you say the ignition is behind a resistor bl...   Oct 10 2010, 11:31 PM
wndsnd   When you say the ignition is behind a resistor bl...   Dec 22 2013, 10:52 AM
FourBlades   I am running mallory dist (with circuit guard box)...   Oct 11 2010, 05:35 AM
Gint   Stock gap since you didn't really increase the...   Oct 11 2010, 05:43 AM
Racer Chris   Do you know which cylinder is missing? its most li...   Oct 11 2010, 06:44 AM
Vacca Rabite   I don't think its an idle jet. all summer lon...   Oct 11 2010, 07:02 AM
Vacca Rabite   How do you tell which blue coils have the internal...   Oct 11 2010, 07:04 AM
Gint   How do you tell which blue coils have the internal...   Oct 11 2010, 05:52 PM
ME733   .........AT what R,P.M have you set your idle at?_...   Oct 11 2010, 09:43 AM
Vacca Rabite   Idle is set at 1100 RPM. I am using the grey spri...   Oct 11 2010, 10:45 AM
Racer Chris   Idle is set at 1100 RPM. I am using the grey spr...   Oct 11 2010, 11:15 AM
Vacca Rabite   The mallory distributor springs don't govern ...   Oct 11 2010, 11:23 AM
Racer Chris   I had to replace the optical sensor last year. W...   Oct 11 2010, 03:34 PM
ME733   .........thanks chris, EXCELLANT advise.......So V...   Oct 11 2010, 03:39 PM
Vacca Rabite   Is the blue coil the preferred coil for the mallor...   Oct 12 2010, 06:54 AM
Vacca Rabite   Is the blue coil the preferred coil for the mallo...   Oct 12 2010, 11:03 AM
Racer Chris   Is the blue coil the preferred coil for the mallo...   Oct 12 2010, 11:15 AM
ME733   .VACCA.........Check all the ignition timing posit...   Oct 12 2010, 09:35 AM
jeffdon   You know, I am running a carbed 2056 with 494 webc...   Oct 12 2010, 09:36 AM
Vacca Rabite   You know, I am running a carbed 2056 with 494 web...   Oct 12 2010, 10:22 AM
jeffdon   You know, I am running a carbed 2056 with 494 we...   Oct 12 2010, 10:54 AM
Racer Chris   I went to a malllory with the grey springs, hopi...   Oct 12 2010, 11:35 AM
Vacca Rabite   I went to a malllory with the grey springs, hop...   Oct 12 2010, 11:37 AM
Racer Chris   What springs do you like to use? Is this somethi...   Oct 12 2010, 12:00 PM
Vacca Rabite   go down to 60 idles and try that. I tried 130 mai...   Oct 12 2010, 11:02 AM
jeffdon   go down to 60 idles and try that. I tried 130 ma...   Oct 12 2010, 11:45 AM
nathansnathan   Here's some good reading on the blue coil http...   Oct 12 2010, 11:05 AM
ejm   Here's some good reading on the blue coil *sn...   Oct 12 2010, 05:10 PM
Vacca Rabite   okay, so the springs you are using are a direct re...   Oct 12 2010, 12:30 PM
Racer Chris   I thought one of the benefits of the mallory igni...   Oct 12 2010, 01:10 PM
Vacca Rabite   Hey, someone check me here. Using a meter for test...   Oct 12 2010, 05:24 PM
orange914   Hey, someone check me here. Using a meter for tes...   Oct 12 2010, 08:21 PM
Gint   Dude... ditch the resistor. You don't need it....   Oct 12 2010, 09:47 PM
Vacca Rabite   I agree about ditching the resister. That is goin...   Oct 13 2010, 07:38 AM
jaxdream   Check to see if your plug wires will be ok with th...   Oct 13 2010, 07:54 AM
7275914911   Just off the wall ? and something that I came acro...   Oct 13 2010, 07:56 AM
Gint   But what about addig a more powerful coil?You cert...   Oct 13 2010, 08:01 AM
Vacca Rabite   Okay, partial success!!! We got out o...   Oct 13 2010, 04:51 PM
jeffdon   Okay, partial success!!! We got out ...   Oct 13 2010, 05:11 PM
Vacca Rabite   Okay, I just tested my timing at idle (1000 rpm) a...   Oct 13 2010, 05:29 PM
Gint   Curious... what exactly did you rewire that gave s...   Oct 13 2010, 05:33 PM
Vacca Rabite   Curious... what exactly did you rewire that gave ...   Oct 13 2010, 05:49 PM
nathansnathan   Sounds like you're advance is set to 20 degree...   Oct 13 2010, 06:12 PM
Vacca Rabite   Yes. I need to reset the static time. I am reall...   Oct 13 2010, 06:24 PM
Vacca Rabite   I FINALLY fixed my static time. I used the 16 deg...   Oct 26 2010, 06:28 PM
MarkV   I am running a 2056 w/ delorto carbs and a mallory...   Oct 26 2010, 09:19 PM
Vacca Rabite   My mallory is already electronic - no points. Is ...   Oct 27 2010, 04:14 AM
MarkV   A Pertronix II will work with a .6 ohm coil, a Uni...   Oct 27 2010, 07:34 PM
curt914   Hi Zach Been following your thread and waiting t...   Oct 27 2010, 08:50 PM
Vacca Rabite   Its not the tin. My dizzy is 180 off, so the #1 l...   Oct 28 2010, 06:56 AM
FourBlades   Any chance you are running rich at idle? There wa...   Oct 28 2010, 01:05 PM
AndrewPokrandt   You can run it at night in a dark area and see if ...   Oct 28 2010, 04:18 PM
MarkV   :agree:   Oct 28 2010, 04:45 PM
orange914   :agree: :agree: + mist it with a hand spray pu...   Oct 29 2010, 10:11 PM
tim_nd   What was the end result, or are you living with th...   Aug 8 2012, 09:49 PM
Vacca Rabite   Microsquirt with crank fired ignition. Not done y...   Aug 8 2012, 10:50 PM
tim_nd   Are you willing to part ways with your Mallory uni...   Aug 8 2012, 11:58 PM
RobW   Zach, did you ever get this resolved? :popcorn:   Dec 22 2013, 10:46 AM
rhodyguy   get one of these (coil) and some of those.   Dec 22 2013, 11:13 AM


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