I think its the most noticeable after you drive it with the subs in for a while, and then get into a car without them. Then you realize how bad it actually is.
I've never understood this, I can lift up one side of the car at a time,:shrug: no SF's, or other chassis stuff yet (coupe). Opening/closing the doors while jacked up may be a different story, but haven't had to deal with that one yet.
thats what she said......
what is the diiference between subframe connectors and jacking rails? What are jacking rails?
a strut tower brace might help
I dont think a strut tower brace will solve the cowl shake problem. My Cobra had a cowl shake problem and now the problem is gone. My Cobra convertible deos not have a strut tower brace. I got rid of the cowl shake problem in my car with the Griggs frame kit. The frame kit requires a lot of interior floor pan cutting and welding to install the upper subframes and bulk head stiffeners that connect to the lower subframes, but the results are worth it. Griggs claims that chassis stiffness in bending mode is increased by 1500%
Most people on this board will tell you that the Griggs frame kit is over kill and is only needed on something like a open track or road race mustang, but this is exactly what the mustang convertible needs to stiffen it up. By the way, jacking rails, ladder rails only serve to add weight without adding any real stiffness.
While the frame kit itself is not expensive, the labor to install it not cheap since it taks atleast 8 hours to install it. Thankfully I saved a ton of money by doing all of the cutting and welding my self.
We all know that you have a stronger subframe kit, cause you tell us every chance you get. For someone who doesn't, they can either rip out what they have and waste $200+, buy yours for $350 and spend another $600+ on the install($1100+ if you can't add), or buy a $150 STB that they can easily install themselves. oke: Most people don't have a welder. The jacking rails are not intended to increase rigidity, just give you a nice place to put a jack.
Unless a cobra has a set of Kenny brown subframe connectors ( the worst sub frame connectors on the market by far) there is no need to rip out the subframes that are already on the car to install the upper half of the Griggs frame kit since the Griggs system uses a conventional sub frame for the lower underside of the car. My car has the Global west lower subframes( without the ladder bar crap) and at the middle, the Globalwest subframes are welded to the Griggs upper frame rails that are sunk in and welded to the upper part of the floor pan.
Unless the car is going to be tracked heavily, overkill IMO.