PLRX

First I'd like to thank Brian Cunningham, dmukina, ZR1, Jim and LD85 for their CF posts and help. Special thanks to Brian, he had helped me since day 1 of the LT4 Project.

dizwiz24

thanks for the incredibly detailed writeup letting us all know about the pitfalls that you (and we would) experience on the way of this incredible mod.

This is my next mod for my 93. However, for the near future I pretty broke and burnt out from my supercharger install.

I have some questions.

1. What was your reasoning for Van Steel vs. Doug Rippie Motorsports, or Exotic Muscle? price? easier install? Im just trying to figure out which ones I should get when I go to do this.

2. Brakes? What are those? C5 brakes?

3. Please let me know if you notice less telegraph between drivers and pass. side with this mod. Ive noticed if there is a dip before a curve (on one side of the road, bad road, etc.), it could throw the car off balance. This is because the suspension would still be unsettled and still 'bouncing' as I went into a corner. Very un-nerving.

4. How does it feel on a rough road? Something I miss about the bmw 330i zhp I used to have was that it handled well on all road surfaces. Sure the vette would generate more peak skidpad g's, but that was only on a perfect world skidpad. If the road was slightly rough (ex. filled potholes, shoddy, bumpy roadwork), the bmw was the better handler as its suspension felt more independant (less side to side telegraph, and bounce - as described in #3) and inspired more confidence to push it faster.


on all your work.

PLRX

Here it is:

PLRX

ironvapor

Could you clarify what you had to do to the upper shock mount. Was that on the front or the rear? I am not clear on that part of the install which looks terrific.

Tom400CFI

You said that the ride is "bumpier on local streets". Can you talk about that a little more? Is it more body motion b/c of firmer springs and/or shocks? Or more "crashing" over bumps?

Have you ridden in a C5 or 6? (or an M3 or CTS-V) If so, you know how when you hit hard edged bumps (cracks in the asphalt) you just get a "thwap" sound from the tires, and not much other drama. In the C4, the car sort of "crashes" over cracks/sharp edges...almost as if the tire pressure were 150 PSI, compared to the new cars. Otherwise, MY C4 rides pretty smooth.

Did the coil overs reduce "crash", but increase controlled body motion due to tighter settings?

Thanks in advance.

-Tom

PLRX

I cant describe bumpier. It bumpier to me maybe it would not be to you etc.

The ones asking, Are you upgrading?

BrianCunningham

glad you like it

Tom400CFI

Well that was the term you used above. (?) What does that mean? In what manner, in what condting is it "bumpier"? Is it bumpier in a 'worse' way or in a better way? How is the ride QUALITY compared to before the swap?


I might....if it provides a better QUALITY ride. I think my car has a "soft" ride (too soft for my tastes), but still it CRASHES over sharp edged bumps. Like the tire is too hard/over inflated.

I hypothisize that the C4 does this, and the C6 doesn't, b/c of the point at which the spring interfaces the lower arm; it's more inboard on the C4 than on the C6. Therefore, shock is being transmitted throught the spring (as on any car) AND the lower arm bushings. Coil overs moves that point outward on the lower A-arm, lowering shocking loads through the lower arm bushings. I hypothisize that this would result in a better quality ride at no expense to handling -in fact you might end up w/BETTER wheel control.

So yeah, I might be in for coil overs if I could get some meaningful feed back that supports this expense.