Cobra odds & sods - Page 2
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  1. #11
    Rods 'n' Sods Junkie
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    The roll bar mounting was way too tight what with corrosion and the spring in the tube. I had to split the sockets right down to get the remains out.

    To improve matters for next time I turned a couple of sockets out of thick wall tubing

    P1040070.JPG

    And welded to the original mountings
    P1040071.JPG

    The fit is much looser and just uses a simple bolt to hold the roll-bar in place

    P1040073.JPGP1040074.JPG

    Sorry about the mess, I've cleaned it up a bit since then.

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  3. #12
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    The engine all cleaned up nicely enough inside. It's not got a huge mileage.

    P1040079.JPG

    This is my engine building bible - really great book for the amateur like myself

    P1040102.JPG
    Last edited by mylesdw; 10-02-2020 at 17:52.

  4. #13
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    Around about now, the "while you're about it" factor cut in and I fitted a pair of Sportsman heads and a Howard roller cam.

    New roller lifters mean that the pushrods don't fit any more so you need these two tools:

    P1040107.JPG

    P1040108.JPG

    A pushrod length checker and an adjustable pushrod.

    Place the cam on its base circle and assemble thus:

    P1040111.JPG

    P1040112.JPG

    Adjust the pushrod to fit, then measure it and buy a set that length

    P1040114.JPG

    The blue plastic checker should ensures that the valve rocker geometry ends up right.
    Last edited by mylesdw; 13-02-2020 at 18:17.

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  6. #14
    Administrator blackpopracing's Avatar
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    Nice.

    You probably know, but make sure to buy Moly pushrods when using guide plates.

  7. #15
    Rods 'n' Sods Junkie
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    This is what I love about forums - having experts to look over your shoulder. I went away and checked what I had bought and they ARE chrome-moly (luckily).

    I think it is something I did know, but I certainly didn't think of it when I placed the order.

    Thanks
    Last edited by mylesdw; 13-02-2020 at 21:14.

  8. #16
    Administrator blackpopracing's Avatar
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    No worries, for those that may not know if you use std pushrods with guide plates the plates will wear the sides of the rods which can lead to the rods collapsing.
    Moly rods are hard enough to not sustain wear.

  9. #17
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    Love this! This looks a well engineered car and if this isn't a rod it's darn well near it with the concept of a lightweight Brit sports car with a huge American engine shoe horned in.

    One thing I've been musing on of recent, is that if you keep any vehicle long enough, you end up having to rebuild it on a cyclical basis, or at the very least end up doing the same job several times. Some would say a statement of the bleeding obvious!

  10. #18
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    Yes, very true and all the jobs that you skimped thinking 'that will do' come back to bite you!

    Actually, it's rather fun re-engineering a car, what worked and what didn't. I put copper grease on all the fasteners as I went and the whole thing just came apart after 30 years like it was built yesterday.

  11. #19
    Rods 'n' Sods Junkie alan's Avatar
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    Quote Originally Posted by mylesdw View Post
    I bought it purely because of that tubular backbone chassis, so much nicer than the square ladder affairs under most of the cobra replicas at the time.
    I know what you mean about the ugly box section chassis out there !! I built this from scratch in 1983 . It was exported to NZ in 1986

    Ran a twin turbo 351 Cleveland
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  12. #20
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