Author Topic: new recurved duraspark or Mallory unilite  (Read 13697 times)

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newfalconowner

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new recurved duraspark or Mallory unilite
« on: January 17, 2016, 06:05:49 AM »
I have both distributors here,, new recurved duraspark or a new Mallory Unilite mechanical adavance. Using a MSD 6al box, with a Fast ez efi set up. Which one would be better for street/strip use


blykins

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Re: new recurved duraspark or Mallory unilite
« Reply #1 on: January 17, 2016, 06:30:19 AM »
I am not a Mallory fan....
Brent Lykins
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newfalconowner

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Re: new recurved duraspark or Mallory unilite
« Reply #2 on: January 17, 2016, 06:34:32 AM »
whys that. you going to elaborate or just keep it like that

ScotiaFE

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Re: new recurved duraspark or Mallory unilite
« Reply #3 on: January 17, 2016, 07:56:07 AM »
The Duraspark uses a Hall Effect trigger and the Mallory uses a Photo Optic light trigger.
You could argue either one has it's merit.
More of an argument would be which one looks better. ::)
You will see no difference in performance with either one if they are working correctly.

Side note: MSD owns ACCEL which owns Mallory.
Mallory will be discontinued this year.
Collectors item Rick? lol 

newfalconowner

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Re: new recurved duraspark or Mallory unilite
« Reply #4 on: January 17, 2016, 09:16:56 AM »
I got the recurved one in now, and just received the Mallory,, I will try that this spring and see what one works better,, I do like the looks of the Mallory over the duraspark though :)

My427stang

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Re: new recurved duraspark or Mallory unilite
« Reply #5 on: January 17, 2016, 09:27:10 AM »
Unilites work great, but you have to ensure you have stable power to the coil, good grounds, and the right resistance between the coil and ballast combo.  One important point, if you run an MSD box or any brand CDI, even the resistance doesn't matter, all it does is trigger the box and what the distributor sees is pretty gentle, the Unilite will likely last forever.

However, the Duraspark doesn't take as much thinking, and works great too.

If it were mine, I'd likely run the Unilite if I had a CD box, Duraspark if I am grounding the coil through the distributor like a stock vehicle.

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jayb

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Re: new recurved duraspark or Mallory unilite
« Reply #6 on: January 17, 2016, 09:33:24 AM »
I've only had one Unilite, many years ago.  It quit after about a year.  I'd run the Duraspark, they are pretty near bulletproof.
Jay Brown
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My427stang

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Re: new recurved duraspark or Mallory unilite
« Reply #7 on: January 17, 2016, 09:55:24 AM »
Diverging a bit from the question, but Uniltes do indeed crap out if not fed correctly. It's all in the directions, but for some reason, people, including me when I installed my first one, ignore it or assume it's fine.

The key here is thinking about what the distributor sees when it makes a ground, not what it sees for a feed to the module.  Unilites can handle over 14V to the LED light bulb, so the red feed wire really can be fed by about anything, where it gets dicy is what your coil sees on the positive side, especially after the battery is charged.

Mallory says 10V if I remember correctly, that and the proper coil, controls stray voltage at the module as it completes the circuit and collapses the coil field.  If just run with a standard resistor wire to the coil, or the incorrect coil or ballast, they can last forever or not too long. Jay, you likely can explain better what is seen by the distributor when the coil collapses,

Faron actually turned me onto that after I had a failure in a not so nice part of Vegas.  When I checked running voltage at the coil, I was well over 13V, added the correct resistor and never lost another.

People add surge protectors on the feed side of the module, check the voltage there, you name it, but when you dig into Mallory's guidance, it's very clear, and they even mention is severe cases to run a condenser on the neg side of the coil to stabilize what the module sees from the backside.

Again, none of this is a factor if you are running a CD box, the box manages the coil, the distributor turns into a low voltage switch

That being said, absolutely true statement, Dursapark doesn't need nearly the thinking, nor does any magnetic pickup that I know of.
« Last Edit: January 17, 2016, 09:57:19 AM by My427stang »
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Ross
Bullock's Power Service, LLC
- 70 Fastback Mustang, 489 cid FE, Victor, SEFI, Erson SFT cam, TKO-600 5 speed, 4.11 9 inch.
- 71 F100 shortbed 4x4, 461 cid FE, headers, Victor Pro-flo EFI, Comp Custom HFT cam, 3.50 9 inch

Ford428CJ

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Re: new recurved duraspark or Mallory unilite
« Reply #8 on: January 17, 2016, 10:08:10 AM »
Totally agree with Ross.... No argument from me! I ran Mallory for years. Good stuff. But like Ross is saying. It's in your set up! JMHO
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newfalconowner

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Re: new recurved duraspark or Mallory unilite
« Reply #9 on: January 17, 2016, 10:35:19 AM »
I am using a msd 6al box, msd blaster2 coil and msd wires. with a fast ez efi fuel injection kit. I'm running the duraspark  distributor thru my msd box and the efi thru the tach output on the msd box. brand new wiring harness, and its all basically new. I will try the Mallory soon as it warms up and will compare both distributors. I had the duraspark on for a few weeks before snow hit and took for a nice run and it was as expected..

thanx a lot for all your input..

Rick

thatdarncat

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Re: new recurved duraspark or Mallory unilite
« Reply #10 on: January 17, 2016, 10:59:53 AM »
Hello Rick, here is a link to the post from a few years ago I was referencing last night, specifically Jays second reply in the post on the VR magnetic pickups and the Hall effect sensor pickups. Re-reading it myself this morning ( I wasn't home last night ) I see Jay didn't go into detail on the Mallory Unilite.

http://fepower.net/simplemachinesforum/index.php?topic=100.msg514#msg514

Jay, I sent Rick here for more information on this question he asked last night on Wes' Facebook FE site. I just thought at the time that your reply in 2011 was so good and detailed that I printed it off and saved it in my distributor file.



« Last Edit: January 17, 2016, 11:08:37 AM by thatdarncat »
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newfalconowner

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Re: new recurved duraspark or Mallory unilite
« Reply #11 on: January 17, 2016, 11:35:35 AM »
thanx for that link

blykins

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Re: new recurved duraspark or Mallory unilite
« Reply #12 on: January 17, 2016, 12:34:17 PM »
whys that. you going to elaborate or just keep it like that

I've had some Mallory parts leave me stranded before....

First impressions are pretty strong for me.   If there's another option available, I'll try to head that direction.   
Brent Lykins
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newfalconowner

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Re: new recurved duraspark or Mallory unilite
« Reply #13 on: January 17, 2016, 01:38:18 PM »
ok.. just like the stock duraspark box, or ignitor failing, or .......

thanx for explaining.

sixty9cobra

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Re: new recurved duraspark or Mallory unilite
« Reply #14 on: January 17, 2016, 01:52:21 PM »
I am also not a unilite fan. I have walked one to many times.   I put one in my girlfriends car and it shut off on the highway then decided to work again and blew the mufflers apart. That unilite didnt like hot days.