Cobra (re)build

  1. mylesdw

    mylesdw Member

    Messages:
    677
    New Zealand
    Carbs and mapped ignition using one of the MSD boxes. I really like the idea of being able to tweak the timing easily without resorting to changing distributors and bob-weights. I hope to hide the coils down in the nose of the car to keep a fairly traditional look.
     
    Wallace likes this.
  2. mylesdw

    mylesdw Member

    Messages:
    677
    New Zealand
    With any new combination of valve train parts you need to establish what length push rods are needed.

    Two useful tools for this are a push rod checker and an adjustable push rod

    P1040107.JPG P1040108.JPG

    You assemble the checker in place of a rocker arm

    P1040110.JPG

    and it gives you just the right rocker arm geometry.

    Then you adjust the push rod to fill the gap between the checker and the lifter

    P1040112.JPG

    Then you measure the length and order up the new push rods. I need a set 7.2" long it seems

    P1040113.JPG
     
  3. HopefullySoon

    HopefullySoon Member

    Messages:
    554
    Location:
    Heywood
    quality job
     
  4. mylesdw

    mylesdw Member

    Messages:
    677
    New Zealand
    Starting to come together now with the new heads on and looking very chev-orange. I'm using a Dupli-Color paint called 'engine enamel with ceramic' - I don't know how it will wear but it goes on really nicely.

    Glad to find that there seems to be adequate clearance under the rocker covers.

    P1040124.JPG
     
  5. mylesdw

    mylesdw Member

    Messages:
    677
    New Zealand
    Thinking I was being clever by getting the right tool for the job I bought this piece of shite off ebay to install the new balancer

    shite.jpg

    They're sold under the name ProForm and this one snapped off leaving a piece in the crank with very little effort.

    Beware.
     
  6. slim_boy_fat

    slim_boy_fat Forum Supporter

    :( Easily removed? Or a real pain?
     
  7. mylesdw

    mylesdw Member

    Messages:
    677
    New Zealand
    I was fearing the worst, but luckily, easy; I was able to twiddle it out with a pair of sharp points.
     
    slim_boy_fat and dobbslc like this.
  8. mylesdw

    mylesdw Member

    Messages:
    677
    New Zealand
    Please don't edit my posts - rude!
     
    Last edited by a moderator: Sep 6, 2019
  9. slim_boy_fat

    slim_boy_fat Forum Supporter

    It's the forum's automatic swear filter kicking in.
     
  10. HopefullySoon

    HopefullySoon Member

    Messages:
    554
    Location:
    Heywood
    The swear filter has caught me out in Pm

    I've seen Flip Flops (that should really be changed )

    Chewbacca and jaberwocky all thrown in .

    It's make for a more than interesting Pm once or twice .

    I get the stars wars ref , where does flip flops come from ???
     
  11. Paul.

    Paul. Moderator Staff Member

    Messages:
    6,126
    Location:
    Northampton. UK
    It was me that edited the post, there was a clear attempt to beat the swear filter so I spelt it correctly and let the filter change it, the forum policy on swearing is well enough known, the easy way to avoid post edits is to stick to the rules.
     
    jsf55 and Wozzaaah like this.
  12. mylesdw

    mylesdw Member

    Messages:
    677
    New Zealand
    Disappointing.
    Bye.
     
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