Resto mod from rolling shell - Page 23

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  1. #221
    CelicaSupra.com Member SupraFiend's Avatar
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    Looking good!

    I would tie the shock mount in too if you can, though its challenging to make it bolt on and functional.

    For the bolts for your bar, source the highest grade you can. Those are M6s as I recall (though they look like 8s to me in your photos, werid). I went with some high strength cap screws.

    That stupid lump of steel! I have seen that before but totally forgot about it. Probably a NVH thing, I want to go and dig that out of all my cars now if it truly has no purpose.
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  3. #222
    CelicaSupra.com Member
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    I can have a tab running from one of my bars to the shock mount for sure. I hadn't planned on it, but I want it all fairly removable anyway.

    The bolts in those pictures are the stock seat latch bolts. However I have to find some bolts for the seat belt mount point and child seat mount point. Would Grade 8.8 or Grade 10.9 bolts be preferable? I guess might as well go highest grade.

    It doesn't seem like it's possible that it is there for any sort of structural strength but I'm not sure? Maybe it prevents buckling at the center of that beam? It is way heavier than it needs to be for anything structural, and there is foam between it and where it contacts the roof sheet.

  4. #223
    CelicaSupra.com Member
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    More bracing. I got 90% of the way through twin to this one on the other side but it started POURING rain. The bay flooded and I decided I didn't need to be welding while standing in a puddle. They aren't quite identical as I'm doing a lot of Eyeball Engineering, off by about 1/4 inch in space. Right one is farther back from the shock tower than the left one. I don't think it's hugely important....











    What on earth that hunk of metal does is still baffling me. Do I really need it? It's heavy and I would like to cut the weight out. I bet if anyone has removed it, it's that crazy nordic guy...

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  6. #224
    CelicaSupra.com Member mutantcolors's Avatar
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    Getting into some real fab now. Gotta be a nice change of pace.

  7. #225
    Boosting Mod SilverMk2's Avatar
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    Quote Originally Posted by Texasissouth View Post
    [IMG]What on earth that hunk of metal does is still baffling me. Do I really need it? It's heavy and I would like to cut the weight out. I bet if anyone has removed it, it's that crazy nordic guy...
    It's for vibration damping. The mass of an assembly is related to its natural frequency. They probably had an issue with vibration in the roof at some frequency and the hack way of fixing this is to increase the mass of the assembly.

  8. #226
    CelicaSupra.com Member
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    Quote Originally Posted by mutantcolors View Post
    Getting into some real fab now. Gotta be a nice change of pace.
    I'm mostly doing this because I'm very nervous to put that quarter panel back on and want more practice. It is a refreshing change of pace though.

    Quote Originally Posted by SilverMk2 View Post
    It's for vibration damping. The mass of an assembly is related to its natural frequency. They probably had an issue with vibration in the roof at some frequency and the hack way of fixing this is to increase the mass of the assembly.
    So I can safely remove it then? Excellent.

  9. #227
    CelicaSupra.com Member SupraFiend's Avatar
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    Yeah the stock seat latch bolts are only the first level of strength. The metric grading system is different, the FSRM covers it and shows what the different markings on the factory bolts mean. 8.8 is weak sauce, 10.9 isn't bad. 12.9 is king, but can be hard to find a lot of bolts in.
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