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FIX:Master cylinder pushrod too short

Discussion in 'The Hokey Ass Message Board' started by sapple89, Jan 23, 2014.

  1. sapple89
    Joined: Feb 27, 2013
    Posts: 14

    sapple89
    Member
    from SOCAL

    My push rod is about 4" too short. I was thinking about cutting a 4" bolt and stick it in the master cylinder. Can anyone think why this might not be a good idea?
     
    Last edited: Jan 23, 2014
  2. drptop70ss
    Joined: May 31, 2010
    Posts: 1,167

    drptop70ss
    Member
    from NY

    As long as you are driving in CA and I am in NY I see no problem with it at all. The people you potentially kill when you brake pedal jams may have an issue with it.
     
  3. fsae0607
    Joined: Apr 3, 2012
    Posts: 871

    fsae0607
    Member

    It is not a good idea because brakes are a safety item and you never mickey-mouse it. Get the right pushrod, or cut down a longer one.
     
  4. Gene Boul
    Joined: Feb 9, 2006
    Posts: 805

    Gene Boul

    If you are willing to do that I would like a picture of the rest of the car!
     

  5. blowby
    Joined: Dec 27, 2012
    Posts: 7,258

    blowby
    Member
    from Nicasio Ca

    Should work about as well as this

    [​IMG]
     
    GTO_MUSCLE_SS likes this.
  6. sapple89
    Joined: Feb 27, 2013
    Posts: 14

    sapple89
    Member
    from SOCAL

    Maybe this will help......







    [​IMG]
     
  7. fsae0607
    Joined: Apr 3, 2012
    Posts: 871

    fsae0607
    Member

  8. chubbie
    Joined: Jan 14, 2009
    Posts: 2,311

    chubbie
    Member

    four inches is a lot, but I've made many brake push rods (almost every car i've built) is it a strait push? if its not you have to many things going on at one time. Use ..maybe a grd 5 or better bolt that looks right. weld ends on. i try to make them adjustable useing the treads on the bolt. If you have the skills to do this it's a no brainer
     
  9. saltflats
    Joined: Aug 14, 2007
    Posts: 10,552

    saltflats
    Member
    from Missouri

    So the master is not the correct one for the booster.
     
  10. unkledaddy
    Joined: Jul 21, 2006
    Posts: 2,865

    unkledaddy
    Member

    For all you naysayers.......I am currently using a bolt with a heim on the threaded end for adjustability on a manual system. I've had no problem whatsoever in 6 years.

    I cut the bolt to length, chucked it up in a drill and rounded the MC end on a belt sander.
     
    Last edited: Jan 23, 2014
  11. honeyman
    Joined: May 24, 2010
    Posts: 330

    honeyman
    Member
    from Steiner

    There's a pill for that right?

    Sorry, couldn't resist...
     
  12. Looking at your pic brings to mind a couple safety-related items.
    1) lose the power booster. Given it's size, it's as likely to work as my wife's dog. Which is also small...And that may make up all you are lacking in rod length.
    2) I hope that firewall is braced on the backside, because the utter lack of bracing on the engine side means that the brake master will be bending the firewall, to the point of fracturing. And you may be surprised how quickly, as well.
    3) Do not try filling the master with a bolt to make up for lack of rod length, the real danger is that the pushrod might fall out, leaving you with no brakes.

    Cosmo
     
  13. fsae0607
    Joined: Apr 3, 2012
    Posts: 871

    fsae0607
    Member


    I was referring to the two-piece rod idea that is unsafe. A MC rod should be one-piece. Just want to be clear about that :)
     
  14. primerhotrod
    Joined: Feb 2, 2013
    Posts: 98

    primerhotrod
    BANNED
    from ILLINOIS

    Now that thing just screams traditional.

    Different length adjustable push rods are available. Sumit or Jegs has them, and from the pic shown, you def have one of their catalogs.
     
  15. classic gary
    Joined: Sep 24, 2009
    Posts: 497

    classic gary
    Member

    Which one is short? The one from the pedal to the booster or the one from the booster to the master. If the latter, then you've got the wrong master cylinder, if the former, Speedway has a nice kit with lots of parts for lots of adjustability.
     
  16. nunattax
    Joined: Jan 10, 2011
    Posts: 2,475

    nunattax
    Member


    thank god im surrounded by water
     
  17. badshifter
    Joined: Apr 28, 2006
    Posts: 3,298

    badshifter
    Member

    Nope...
     

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