Mallory Dual Point/Pertronic

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noyo55

Member
I have a NOS Mallory Dual point Dist that I am thinking of installing on my B engine, when Tod gets his B HI Comp head done and I get one. A couple of questions. first does Pertronic make a conversion for these distributors. If so part number? Do I need to do anything about setting the curve differently. I'm also planning on one of Pete's cams plus Different carburator.Engine has a couple of thousand mile since complete rebuild
 
I believe they do make a conversion but I would stay with the dual-point, IMO they are more reliable. If your Mallory was made for the A/B engine, the advance curve should be fine. If it is for an OHV engine or conversion, it may have too much advance???
 
I got mine from Berts and have run it just like it came out of the box with excellent results . I would much rather run dual points than tring to get by with any electronic setup , any day !!!!!!! Dual points have been said to double the spark . As far as maintainance is concerned , the only thing that I have ever had to do was replace the condenser . Some have told me that they usually got 30.000 miles or more before they needed to do anything to their Mallory dual point distributor .
 
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Purdy,
Does Bert’s still offer the Mallory dizzy? I don’t see it in their catalog.
 
Carl ,
I'm not sure . The last one that I bought was in the mid ninties , it still runs good and the only thing that I have ever had to do was replace the condenser . If Steve doesn't have one he will probably know where to find one . Maybe try Bubbas ignition , Sorry I don't Have contact info for Bubbas .
 
Purdy Swoft said:
Dual points have been said to double the spark
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Say what? :confused:

The mission of dual points is to increase dwell. They do this best on a V8 due to the limits of having 8 lobes on the distributor cam. Not so important on a 4 cylinder and probably not a noticeably stronger spark.
 
Dick Steinkamp said:
Say what? :confused:

The mission of dual points is to increase dwell. They do this best on a V8 due to the limits of having 8 lobes on the distributor cam. Not so important on a 4 cylinder and probably not a noticeably stronger spark.
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X2

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Increasing the dwell increases the spark .When the dwell is increased it gives the coil more time to build up between firings for hotter spark . Ford increased the dwell on the model B engine by changing the profile of the distributor cam . Changing the profile of the model B distributor cam to allow more dwell has been said to double the intensity of the spark, dual points have a similar effect . Doubling the spark doesn't really make that much difference on the model A or B engines . The thing is that every little thing counts when a person is trying to increase performance . You REALLY can't expect a minor distributor dwell modification to make a night and day difference in the power that can be actually felt , especially if a person takes a negative attitude . The installation of a higher compression head will give instant power that you can feel . If a person expects a major power increases from minor mods they will likely be S.O.L .
 
What Purdy says is true about a lot of things, light flywheel is an example, it doesn't add power like some think but it does make it feel like it does. More compression and a bigger carb make a noticeable difference in our Model A's. An engine only uses enough spark to fire across the plug but dual points will give more spark if needed, so can increase the RPM range of a performance engine. Same with a 'hotter' coil. Dual points do increase point-life.
 
A lighter flywheel probably doesn't increase horsepower . A lighter flywheel is easier to spin and allows the engine to rev quicker and takes a load off the rear main bearing . When the engine can rev quicker it makes it easier to feel the power because horsepower is produced at higher RPM .
 
CarlG said:
Purdy,
Does Bert’s still offer the Mallory dizzy? I don’t see it in their catalog.
Click to expand...

Purdy Swoft said:
Carl ,
I'm not sure . The last one that I bought was in the mid ninties , it still runs good and the only thing that I have ever had to do was replace the condenser . If Steve doesn't have one he will probably know where to find one . Maybe try Bubbas ignition , Sorry I don't Have contact info for Bubbas .
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Thanks Purdy, I did some checking:

Berts:
"We no longer sell them due to quality issues.
The last time I bought 5 of them, four of them either didn't work right away , or shorted out within the first hour of use. Mallory has since been sold twice, and I am fairly confident they no longer make the Model A Distributor due to lack of sales.
Steve @ Bert's"

Bubba's Ignition:
"As of February 2018 we no longer offer a new Mallory Model A unit. We have built a few hundred and no longer have the cores....."

Now to add to that, I have access to a couple of Mallory cores (a single point, and a dual point) that I am going to send to Bubba's for evaluation. We'll see how that turns out.
 
Thanks Carl for the info . I'm sorry to hear about the problems with the Mallory distributors and even sorrier to learn that they are no longer available . I run a Mallory dual point distributor on my speedster and 31 standard coupe . I'm glad that I got mine when I did .
 
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