Suspension Shake and wobble vert

f8tlfiveo

My wife likes my spool and blow-off valve.
Aug 8, 2007
1,585
102
64
Lancaster, PA
Car drives fine with the top up, I just drove it for the first time today with the top down. Big difference, the whole car shakes around at about 35-45mph. I don't know what happens faster than that. Anyone ever have this issue ? It does kind of feel like it bounces a little with the top up. Not sure if that has to do with the weld skinnys on the front though. Could a out of Wack wheel weight cause this and be worse with the top down because of less support?
 
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I have owned 3 Fox Convertibles and none exhibit that problem. I drove two with Weld Skinnies for years. My GUESS is you have a bad case of the "cowl shakes" and the body is flexing- you can feel the dash shudder and the front end shake? As bad as the top is in being rigid support, when it is up at least it acts as an attaching point to the two windshield pillars. When it is down the subframe and suspension will flex more. The fox body convertibles are notorious rattling and squeaking, Doe the car doesn't have subframe connectors or a strut brace? If not that would be my suggestion to tighten up the car.

If you want to test to see if the wheel is the issue ( which I doubt or it would do that all the time), remove the skinnies and put a set of regular rims on front and see if the problem goes away.
 
It does not have any stiffening devices on it yet. I am going to put frame connectors on it, just haven't gotten there yet. Your explanation of what happens is pretty darn close to what happens.
 
Do you think a 6 point cage and frame connectors will help this problem. I want to put a roll bar in anyway for the track.

You may want to put the SBF connector on and the cowl strut brace and see if that solves the problem first. The cage would certainly stiffen up the chassis. IMO you want to weld not bolt it in. If you are going that far with a cage, take a peek at your torque boxes as well. May not be a bad idea to install a set of Wild Rides battle boxes.
 
yep. You need to check for clearance issues with some intakes.

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