Nailhead ignition advice.

Discussion in ''Da Nailhead' started by Aussie V8, Sep 21, 2014.

  1. lapham3@aol.com

    lapham3@aol.com Well-Known Member

    The 'trigger' is a timing device for the primary circuit whether it be points-magnets-light. The switched secondary circuit-coil- is the 'spark'.
     
  2. doc

    doc Well-Known Member

    :Smarty: gas mileage is a extremely vague thing... there are so many variables to figure in, that it is impossible to pin it down completely,,, weather, temp, rain or dry,, state of tune up & engine mechanical condition ,,, terrain, wind direction, good gas vs bad gas.... and on and on...... all the guy is trying to do is improve reliability, and possibly pick up some fuel economy in the process.... peak engine performance is like learning a subject,,, here a little, there a little,, and soon you have a peak performing engine.... nuff said.....:laugh:
     
  3. tmcclu

    tmcclu Well-Known Member

    Doc,
    I worked at an Olds dealer in the 70's and of course during the gas crisis(es) we had a number of people complaining about fuel economy not being what they expected. The Service Mananger ALWAYS scheduled them in the shop for a fuel economy test first thing in the morning. Minnesota tends to be cooler and somewhat humid in the morning and he felt that cooler, denser air might help the fuel economy just enough to get the customer satisfied that their car was capable of respectable fuel economy.
    I also remember the 403 Olds motors exhibiting a wide range of fuel economy from very poor to very respectable. Our parts manager always ordered in a Custom Cruiser wagon for his demonstrator, always a loaded, 403 powered car. His mileage would vary by as much as 8 miles per gallon from one car to another! Never were able to figure out why that was the case; all the cars actually ran great!
    Tim
     

  4. Mallory Unilite conversion is really easy to install, and will use any coil. Fits inside existing dist. and last time I bought one, was only $45
     
  5. bobbybuick

    bobbybuick Well-Known Member

    i have petronixs ive used mallory nothing holds a candle to this on ease, stealth, performance, and reliability.put it and there wires on my 65....
    night and day difference http://www.lectriclimited.com/mainpage.htm Everything I have purchased from this co is very high on quality
     
  6. doc

    doc Well-Known Member

    You can install a electronic points conversion kit without recurving the dist...... but.. you will be right in there where the mechanism is and at that point there is very little additional work to be done to recurve....
    Around here there is very few distributer machines to do a ''perfect'' job,,, nor people who know how.... but ,,, you can just use one of the kits that I have mentioned and do a very acceptable job .... I would encourage you to do these mods.. because there is a lot of very cheap power and economy to be gained......
    and ,, you will get rid of the points and condenser....
     
  7. wkillgs

    wkillgs Gold Level Contributor

    Yes, the Dynaflow equipped cars used the same distributor as the 2x4 engines. Good ones to start with since they're set up for 12 deg of initial advance instead of the usual 2 degrees.
     
  8. Schurkey

    Schurkey Silver Level contributor

    Always buy a spare. They're fragile. Mallory expects you to spend another $45 for a voltage regulator to protect the module they under-designed and under-protected to begin with.

    http://www.summitracing.com/parts/maa-29351

    http://www.summitracing.com/parts/maa-29371
     
  9. telriv

    telriv Founders Club Member

    Those re-curve kits do NOTHING to address the vacuum advance rate or degrees. It ALL needs to be done to achieve the desired results!!!! On that note ANY distributor can be set-up for the proper advance weather a regular or 2x4 distributor. It's NOT all about throwing in a re-curve kit & forget it. It all has to be done to work together properly. And, for the most part "Nail" distributors are about bullet proof. No sense or need to waste money to buy something new as they have to also be curved to YOUR application. It's not just a plug & play operation if you want the desired results.


    Tom T.
     
  10. Aussie V8

    Aussie V8 Well-Known Member

    I was on the TA Performance website and they list vacuum advance stop bushes. Are these an original distributor item or some kind of aftermarket upgrade ?
    Are they a requirement for a stock motor please. :Do No:
     
  11. telriv

    telriv Founders Club Member

    If you are going to re-curve the mechanical advance rate then YES. There are also adjustable vacuum advances & Crane makes an adjustable piece that you install under the rear vacuum advance hold-down screw that's adjustable in 2* increments. This is one of the ways I normally use.


    Tom T.
     
  12. Aussie V8

    Aussie V8 Well-Known Member

    Thankyou Tom.
     

Share This Page