What do you have for chassis stiffening? Options

[Justinp71]

I put some more horsepower in my car, so far I have just autocrossed it on street tires. I have the bolt in roll bar that has the mid bar going to the floor.

Besides that my chassis is stock and I am wondering what I should do for more re-enforcement... so I can comfortably run on slicks.

Below is a photo of the roll bar. I don't consider the roll bar to give to much chassis stiffening, but it just might help with cracking the longs.

Edit: I mainly just use the car for street and the occasional Autocross or DE

[J P Stein]

There are a pee pot load of do-dads sold to make your suspension work better.
"Up-grades" such as needle/bronze bushings, mono ball shock mounts, trick shocks, springs, AR bars, T bars....God knows what else. Couple these with modern tires that grip at some multiple of the OEM jobbies and problems are bound to arise.

All of this "stuff" transfers more initial loading into the poor old 914's chassis. All the suspension mounting points are more highly stressed. The chassis itself is something of a noodle anyhow and it doesn't get better with age & all this "stuff". None of this "stuff" works as well as it should because the chassis is flexing and bending (taking a semi-permanent set).... Alignments don't hold (not to mention corner balancing).
Then there is chassis cracking & total failures at the suspension mounting points.
Inconsistent handling is also a bugaboo out there on the edge.

One needs to ask one's self: Do I really want to go there, "stuffwise"?

People are willing to sell you a number of band aids that, IMO, don't cure the flex inherent in the chassis. If you finally reach the point where flex is mostly under control, these band aids will be just excess weight.

The best bet would to be to keep an eye on SSW914's thread while he builds his new race car. He will get the flex under control, I'm sure, and then you'll know what it takes. There are no shortcuts......IMO. (IMG:style_emoticons/default/biggrin.gif)