Whats the difference between a Mallory dual point magspark distributor and a regular Mallory dual point distributor? Also would one with a dwell of 36 be more a high performance compared to one with a dwell of 29??
magspark leads each set of points individually from the "coil", regular dual point feeds them singly.
If I remember right, Mallory Mag Spark was an early dual point dist. really not much differnt than the later versions. Should be able to adjust dwell angle in any of them.
All, I just picked up a Magspark distributor and transformer for my 8BA last week, part number YCM (the M indicates it is for the Magspark), and have done some investigating. Here is what I came up with... --------------------------------------- From the Mallory Knowledgebase section: (http://www.malloryperformance.com/TechSupportKnowledgebase.aspx) Question: i have a mallory dual point for my flathead,and want to know about parts.its a model ycm,type 275 ex.will this work with a 12 volt system?it has 1 condenser on the housing,is this correct? how much voltage should i run at my coil? thanks for any in-fo Solution: The cap is a P/N 4001, rotor P/N 4215C, points P/N 24875B, and the condenser is replaced by P/N 400. You can run this distributor in a 12 volt system as long as you install a 1.5 ohm ballast resistor which is our P/N 700 or equivelant. Dennis --------------------------------------- I have also uploaded two PDF files here for reference, which I got from Mallory Tech Support. One is Mallory Form 347, for the Magspark system, the other is for the ZC, YC Rev-Pol & Double-Life series distributors. The documentation shows setup of the ZC & YC with either the Magspark transformer, or the Voltmaster coil. The ZC/YC PDF shows all part numbers for the distributors. I got the blessing from Mallory to disseminate these PDFs to y'all. Cheers, chrx
Well then, here's a nice follow-up to that last one... Terry Nelson emailed me another excellent PDF to post here. This time, it is Mallory Form 563, a 4-page tech sheet on the Mallory Mini-Mag magneto, including the accompanying Power-Pak and Drag-Pak coils. Power-Pak is for cars with a starter, Drag-Pak is for push-start cars. Enjoy, and Thank you very much for this valuable information! I am sure HAMB'ers will be referring to these for a long time. Here is Terry's contact info: Terry Nelson Technical Service Prestolite Performance Phone: 216-688-8300 Fax: 216-688-8301 terry.nelson@mrgasket.com Cheers, chrx
Look at page 5 in Magspark.pdf attached to posting #4 above. The coil hook-up method is illustrated. Cheers, chrx
The latest tech sheet from Terry Nelson at Mallory. Form 338: "General Information As To The Functioning Of The New Mallory Model YGC And YGCM (dual-point) Distributors" Download and enjoy... Cheers, chrx
Another jem from Terry Nelson! Mallory Form 360, dated August, 1959. Master Parts and Price List. Covers Mallory ZB, ZC, ZCM, YB, YC, YCM, MG, YG, YGC, YGCM distributors, Magspark system and associated parts. (My ring binder is filling up fast!) Cheers, chrx
Hi CHRX, I just installed a YCM and Magspark on my 8BA this past week. Thanks for the paperwork. I am running a fairly stock engine with the exception of a Fenton Super manifold and dual Holley 94's. The main reason I looked into the YCM with matching Magspark transformer was the mechanical advance since with the dual carbs you can't get enough venturi vacuum to operate the stock dizzy. The install was fairly easy.. although since I have the super manifold I had to remove the gennie and offset bracket to get the clearance for the vacuum pot. Everything else was pretty straightforward. Took it out for an inaugaral run to Macungie Pa where the Wheels of Time show was.. the car performed wonderfully. It started so much easier and had much more response through the throttle range with no over heating, the temp held steady all day at a little over half on the gauge. The next day however when I started the car, it was popping and coughing and wouldn't take throttle.. I thought now what the heck happened here. So I went over all the wiring and found no problems.? Lucky for my I had ordered some spare parts earlier in the week. My new points and replacement 400 condensers arrived a few day later. I started by checking the points, everything looked ok. I then replaced one of the condensers. The new replacements have a different bracket than the old HD ones. I took a whitney punch to it and enlarged the hole to accomodate the old screws. I mounted the one on the Dizzy and started the car, it ran fine. I took it out for a run and again no problems. Then all of a sudden it started acting up again. So I replaced the second condenser and so far so good. It's running great again. Too bad they don't make a direct replacement for the large HD condensers.
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