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Mallory vs. Pertronics

Discussion in 'The Hokey Ass Message Board' started by Chuck Fish, Oct 5, 2003.

  1. chrisntx
    Joined: Jan 20, 2006
    Posts: 1,799

    chrisntx
    Member
    from Texas .

    I'm way ahead of you. I put it on the engine, set the timing and its in the trunk ready to go. I wish I knew why the one on my 59 quit working
     
  2. fossilfish
    Joined: Dec 16, 2010
    Posts: 320

    fossilfish
    Member
    from Texas

    I race British cars against British cars. My British car has a Crane system and a number of the British cars I race against have Pertronix. The Pertronix units fail and the Crane doesn't. According the statement that the cause of concern for Pertronix is voltage and ground problems found in British cars. I guess the Crane can handle the evil British electrical systems better. If you have a British car get a Crane. I see it at the track and I know what causes most of the failures.(and it is not ground or voltage problems, in fact I have tried to help my compe***ors fix what kills the Pertronix stuff but they won't listen) The Pertronix stuff is too fragile. It can be made to work as good as the Crane, but then you are back to a as good as deal.
     
  3. teddyp
    Joined: May 28, 2006
    Posts: 3,195

    teddyp
    Member

    i have the mallory unit in my 50 chevy (350) over 12 yrs no problems i have a pertronics in my 65 caddy and my 58 ford (292 y-block) run both for the last 5 years the ford failed so i put another in and now keep a spare in all 3 cars
     
  4. smittythejunkman
    Joined: Nov 14, 2008
    Posts: 86

    smittythejunkman
    Member

    I have never had a Mallory unilite distributor that didn't fail!! with 2 different cars they both failed like clockwork, years ago I remember putting my dual points back in a 428 cobra jet along the side of the road in the rain and pulling a different car home on a log chain a few years later. my brother and a couple friends had no better luck.
    We liked them cause they ran great and were easy to re-curve but hated all the walking involved.
    They have to work or they couldn't sell so many but on any car i buy i pull them out and eBay them or throw them away! they are too fragile and I'm still mad 20 years later. maybe the newer units are better but i,m done trying.
    pertronix is much more dependable but I usually carry a set of points anyway never have had to use them though ,they are good stuff.
    MSD stuff is nearly bullet proof and failure is very rare that's my top pick!!!
     
  5. 32ratsass
    Joined: Dec 14, 2007
    Posts: 258

    32ratsass
    Member

    I've had problems with Mallory Unilites in the past, and switched to the magnetec version, Maglite. The magnetic has been totally bulletproof, and have never had a failure. They say to run a 1.5 ohm ballast resistor ahead of the coil. The weakness in the system is the ballast resistor,and it can be eliminated if you run a 1.5 ohm primary resistance coil. ( as per Mallory tech rep)
     
    Last edited: Nov 17, 2011
  6. i have had unilite and it failed. i got it to replace an old YL Mallory dual point
    the cost of points was getting high eaven Echlin cindensors failed
    i got a Petronoix III with rev limator it works good
    i have used Petronix to replace points for a long time no problem
    better start smother at high rpm's (But the lousy thing did not fix my gas milage)
    just kidding
    They worked good in MGA's but i found that i had to install a ground wire on the braker plate
     
  7. fordor41
    Joined: Jul 2, 2008
    Posts: 1,020

    fordor41
    Member

    I've had Pertronix ignitor I for about 10 yrs. Starts/runs great. Can't use ballast resistor. they need full 12V. I think Pertronix is the only thing I vere bought that worked exactly as advertised the first time. I've heard some have trouble burning them out if the ignition is left on with engine off. I've had my ignition on for long peroids while working on the car and no trouble so far.
     
    Last edited: Nov 21, 2011
  8. hotrod 49
    Joined: Mar 5, 2007
    Posts: 371

    hotrod 49
    Member

    I put a Pertronix 2 in my truck a couple weeks ago and it's worked perfect! Yesterday it was doing some weird things, so I put a timing light on it and saw I had no mechanical advance. I pulled the distributor to see what the issue was, put it back together and it wouldn't fire. Double checked everything from TDC, fuel, rotor aimed at #1, etc... Hmmmmmm! I unhooked a couple of plug wire, hooked up another plug turned the motor over and BIG sparks. My question is I'm not sure if I bumped the vacuum canister, but could I have knocked it out of phase? I put a piece of 1/4" tape around the outside of the rotor and marked where the 8 magnets were underneath. I put a mark on the center of the pickup box. I then lined up TDC with the cap, rotor (the magnet mark to the center of the pickup) all even to center! Put a few degrees advance...NOTHING! Is the pickup area not in the center of the little box? Did I get lucky putting it in the first time? I'm going nuts with this....Fuel and spark and NOTHING!!!!! Help!
     
  9. Gman0046
    Joined: Jul 24, 2005
    Posts: 6,256

    Gman0046
    Member

    Eight years of trouble free Unilite on a hard hitting 355. It can't get any better then that.
     
  10. Hemi325
    Joined: Aug 15, 2006
    Posts: 289

    Hemi325
    Member
    from Boerne, TX

    I ran a Pertronix in an SBC racemotor for a couple of seasons till one day it went flat dead. Put points back in it and finished the wekend. When I spoke with the company they were helpful with advice and we concluded I must have had the ignition on for a spell without starting the engine.

    I threw the Pertronix away, bought an MSD reluctor and pickup, mounted these in the old Chevy fuelie distributor and have run it for years no problem.

    MSD quality is worth the money, IMO.
     
  11. Road Runner
    Joined: Feb 7, 2007
    Posts: 1,256

    Road Runner
    Member

    I have two Pertronix Ignitor I and Flamethrower coils in both my daily rides for a combined 13 years now and never a problem.

    Over the years I have read that the Ignitor I burns out with the ignition on and the engine not running.
    Well, earlier this year I managed to leave the ignition on overnight, but all that happened was that I had to recharge the battery the next day and no damages to the Ignitor or coil.

    Installs easy in about 5 minutes inside the original distributor and is apparently as reliable as it gets and works better than points with no maintenance required.
    I also liked their detailed customer service response, when I had questions about what spark plug wires I can use.
     
  12. hotroddon
    Joined: Sep 22, 2007
    Posts: 28,240

    hotroddon
    Member

    It all depends on where the dist happens to be pointing when it was shut off. More often than not the magnet will be close enough the the pickup to complete the circuit and cause the overheating and failure. You got lucky. The Ignitor II has a microprocessor that shuts off if you happen to leave the key on and the motor is not turning.
    Thanks for your support and kind words. Don from PerTronix
     
  13. Road Runner
    Joined: Feb 7, 2007
    Posts: 1,256

    Road Runner
    Member

    Yes, I wasn't sure if I was just lucky with an open circuit, but the drained battery indicated otherwise.


    I always thought, if the engineers of the day had magnetic sensors instead of points, they sure would have used them on every engine.
     
  14. falcongeorge
    Joined: Aug 26, 2010
    Posts: 18,339

    falcongeorge
    Member
    from BC

    I have always preffered a points type distributor with an MSD. If the box fries, change the wiring around, and away you go.
     
  15. 4tford
    Joined: Aug 27, 2005
    Posts: 1,824

    4tford
    Member

    I run a mallory unilite on my hemi for the last 7 years with no problems. The units do not like voltage transients so they recommend there filter in line. Also they have replacement modules called E-spark that are used for point conversions but they are also a direct replacement for the unilite module at a third of the cost, pic of the filter and replacement below.
     

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  16. 59KUSTOM
    Joined: Nov 16, 2007
    Posts: 912

    59KUSTOM
    Member

    Have a Uni-Lite in my '59 348 Tri-Power. Made a huge difference in starting & acceleration, but I don't recommend using it with a generator. If you're running an alternator, it can't be beat.
     
  17. hotroddon
    Joined: Sep 22, 2007
    Posts: 28,240

    hotroddon
    Member

    If you have Spark, then I don't think your issue is with the ignition.
     
  18. 40FordGuy
    Joined: Mar 24, 2008
    Posts: 2,907

    40FordGuy
    Member

    Still have an early Pertronix unit in my 72 F100, still fires up every time. I wish they made one for early Ford front-mount dizzie !!!!

    4TTRUK
     
  19. hotroddon
    Joined: Sep 22, 2007
    Posts: 28,240

    hotroddon
    Member

    Working on it right now!! ;)
     
  20. linechaser32
    Joined: Apr 8, 2006
    Posts: 1,624

    linechaser32
    Member
    from Iowa

    Been running a Pertronix for 28,000 miles. No problems yet.
     
  21. swade41
    Joined: Apr 6, 2004
    Posts: 14,485

    swade41
    Member
    from Buffalo,NY

    I just had a Crane unit fail, went back in with the points and runs great, non British by the way.
     
  22. 55yak
    Joined: Nov 5, 2011
    Posts: 41

    55yak
    Member

    I run a Mallory dual point in my 57 motor with no problems. Are you sure your ballast resistor is ok?
     
  23. hotrod 49
    Joined: Mar 5, 2007
    Posts: 371

    hotrod 49
    Member

    Wow, weird deal. Found why it wouldn't start and it was a first for me. The harmonic damper had spun almost 3 inches! TDC wasn't anywhere it was supposed to be! Once I found that and fixed the problem, it lit right up and it was game on! I'm sticking with the Pertronix!
     

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