Chassis twist, Weak spots Options

[r_towle]

Hi there,

So over the years I have seen all sorts of ideas, lots of products etc..

Seems like we are chasing our tails.

Here is my dilema, and I would like to get some input.

Take a 34 year old chassis, fix the rust.
Add super stiff suspension.
Bearings, bars etc.
add really sticky rubber.

Now, what gives in the chassis...where is the weak spot.
Say I seam weld the suspension console.
What next...something needs to flex, or it seems to me that something will break instead.
I ahve seen pics from McMark of a cracked long inside, and in the miidle of the span..not a rust issue per se, but a fatigue issue.

So, where can I engineer in flex, so the chassis wont crack, or break a weld.

No Cage allowed.
Just the chassis.
Currently there is not inner long kit, or outer...just good repair work on the rust to date...
Nothing is cracked yet...but something will have to give..
I just put in roller bearings....now its really smooth, but now more of the forces are put directly into the chassis...

Rich

[Chris Pincetich]

My degree is in toxicology, not engineering, but along the lines of what other said...
Raise your suspension pick-up points, give the suspension more travel, and that is where you can reduce stress/flex in the chassis.

The inner/outer long kits are proven - do them and maybe add more. No roll cage, but what about X-braces in both trunks to reduce twist, maybe brace from top of rear shock to upper+lower firewall to bridge the engine bay gap???

My 914 has flex points, they are a reddish brown color and flake when you scrape them (IMG:style_emoticons/default/laugh.gif)