The convertible x-brace works great. Noticeably changes the stiffness of the car and virtually eliminates most noises that are common (especially on the targa top).

@cmanningtsu

6 ай бұрын

I used the McMaster Carr rivetnuts listed in these comments, but 1 number is off (the last one I think).

@cmanningtsu

6 ай бұрын

Also if you have a tranny pan with a drain in the middle rear of the pan, the x of the x-brace does interfere, but you will have to drill a spot in the plate.

Nice bit of info on this topic, definitely worth looking into this if I decide to add a bit more rigidity to a coupe I may decide to buy hopefully soon.

very nice work

Clever way to tighten up your c4.

You should have done a test drive and review of results to convince me to hack up my 95. Not sold but good how to for those who are.

@robertoferrari5397

Жыл бұрын

..how is a couple of hole "hacking up"?

Hi I own a 1996 C4, how is your test drive compare with or without this bracing?

Where can I find an X Brace for my 92?

there are 4 more bolt locations

Damn proud that you're not a purist and enjoy your vette, and don't mind improving it

Size of rivnuts and holes? Drill bit size

@playzwithcars562

Жыл бұрын

M10x1.50 pitch. .7-.38 mm material thickness. McMaster p/n 05105A199. 13.5mm drill bit size.

I just acquired an X brace but it’s missing the center plate, will it still work? Or would it need reinforcement? Can it be made and how?

@playzwithcars562

9 ай бұрын

There are bolt holes in both xbraces. You should be able to bolt them together. I'd use heavy washers also.

..those parts are really new looking...did you restore them?

@playzwithcars562

Жыл бұрын

Yes, I cleaned them up and painted before I installed them.

In the very book you cited, McLellan explains that the X brace was added to the convertibles to fix a localized vibration in the seats and floor pan. Page 146, second paragraph. Nowhere does he say anything about it stiffening the chassis. And the reason is because it does not stiffen the chassis. They did other things for that, as explained in the same paragraph. This piece is worthless for addressing the torsional flex these cars suffer and I'm afraid you've wasted your time, money, and effort putting it in your car. Moreover, this video is perpetuating this myth among all the unwitting who come here to watch it. Your intentions are good but your intel is bad. Anyone who is not convinced, take this assembly or any one like it and grab it by two ends while sticking the other two under something heavy and then see how much you can twist the thing with just the force of your puny human arms. Now imagine what a thousand ft-lbs like a car chassis experiences would do.

@pawsnpistons

Жыл бұрын

Indeed. This looks like snake oil.

@92nredrappini84

17 күн бұрын

I've heard folks that use this brace that it makes a noticeable difference in NVH.

Americans have a habit of calling the PARKING brake, an EMERGENCY brake.