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Early vs Late Control Arm

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  • JoeHall
    replied
    Originally posted by 64studeavanti View Post
    Both the Avanti and Speedster I worked on have the clip for the upper bumper on the frame, not the upper arm.
    Yes, you are right, my mistake. I drill a hole in that clip to mount the above mentioned lower jounce, then trim it down as needed.

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  • 64studeavanti
    replied
    Both the Avanti and Speedster I worked on have the clip for the upper bumper on the frame, not the upper arm.

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  • jackb
    replied
    Maybe taking a few measurements will help...to compare...

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  • JoeHall
    replied
    I have never worked on an Avanti, but every Stude I have seen had a metal bracket in that area, to clip-mount the upper jounce rubber onto. I have drilled a hole in that area, and installed a lower jounce there, trimmed down on top, because many times, if setting up a bit higher (as I prefer) the required max positive camber adjustment causes the top of the king pin to kiss the clip on style jounce. Perhaps Avanti uses something similar to the lower jounce, which requires a bolt hole, as yours appears to have.

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  • 64studeavanti
    replied
    I just reviewed pictures of previous work I had done. The 55 Speedster I worked on did not have the hole. The 63 Avanti did. I do not know if there are any other differences or what the hole is for.

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  • ColoradoHawk
    replied
    Let’s go this way, what is the difference between the ‘62 and earlier control arm and the later ones?
    I can’t believe the only difference would be the hole that my original has and the replacement doesn’t.

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  • Dwight FitzSimons
    replied
    Originally posted by ColoradoHawk View Post
    Here’s different photos with the original (on the right) before powder coating.
    Well, now I see it. Your vendor sent you an upside-down control arm. Return it ti him and demand a right-side-up control arm.
    --Dwight

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  • ColoradoHawk
    replied
    Here’s different photos with the original (on the right) before powder coating.

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  • JoeHall
    replied
    Originally posted by Dwight FitzSimons View Post
    It must be too early for me to think (or something), but I don't see any SIMILARITY between the two pieces, except that they appear to both be made of steel.

    --Dwight
    Agree, but was thinking it was maybe due to camera angle or something. Definitely looks like a different part. However, I do not see any problems with parallelism in the mounting ears, would need a better pic to call that one.

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  • Dwight FitzSimons
    replied
    It must be too early for me to think (or something), but I don't see any SIMILARITY between the two pieces, except that they appear to both be made of steel.

    --Dwight

    Leave a comment:


  • Ross
    replied
    Don't know about that, but I notice that the mounting ears for the rubber bushings on your old one are nowhere near parallel. Was a good idea to replace it.

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  • Early vs Late Control Arm

    I’m currently rebuilding the entire front suspension on my ‘63 GT. One of the openings for the passenger side upper control arm was oval instead of round, so I decided to replace it. I got a replacement from one of our vendors and the only difference I see is that it doesn’t have a hole in the recess like my original ones do.
    Is this possibly a pre ‘62 control arm?

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