Anyone have an idea of how that would ride on a fwd eg civic? I'll be running 450f/450r springs as well. I've been away from the fwd world for about a decade and I loved that setup on the NB2 Miata I had.

 

Welcome back to the wrong set of physics

For a street car where it's all about how it 'feels', would probably be fine - But you'll likely need stiffer fronts if you're going to run no front bar. None of this matters if you're slammed, btw. Roll centers and bar geo are trashed but you might as well forget about the bar because you've only got droop travel left anyway. Only thing to care about is that the front springs need to be stiff enough to keep the arms from hitting the towers.

Personally I'd rather have a slightly softer spring for some bump compliance and use bars to maintain roll stiffness.

Personal daily (00 sedan):

- 205/50/15 Dunlop Ziii's on 15x8 +35
- 295mm wheel center to arch top, rear is 5-10mm higher (forget exactly right now)
- 475lb front springs, 26mm EM1 bar
- 380lb rear springs, 22mm USDM ITR bar
- Hardrace bushings all around

It's about as low or as stiff as is reasonable to still drive every day, IMO. Car has LSD and is nice & neutral but not edgy when pushed. Safe enough that I'd feel fine letting my GF drive it hard but free enough that it still makes me smile when I lean on it.

 

thanks Adam. I'll rethink things and make some changes!

 

I have mine set up as a weekend driver right now with the setup biased for understeer. The rear end will still step out if I throw into a corner carelessly enough, but for the most part, its the front that I'll feel breaking away. My car isn't horribly low geometry-wise due to the larger tires and it feels decent. The only pickup point adjustment I have is the PCI RTA bushing that sits a bit higher than usual. Not even sure if you can consider that a pickup point adjustment. Could most certainly use stiffer springs and maybe a better strut for better damping though.

I went from no sways at all to a front JDM ITR 25mm and a USDM Integra 14mm. Without any sways, the weight transfer was quite extreme from opposite corners of the car. Got pretty hairy when having to scrub speed off mid-corner. I think the car without sways might be a good example of a car with soft springs and no sway. The combo of large front sway and small rear sway got rid of the wandering rear end altogether. I love it. With a bit more power on tap or adjustable rear LCAs, I'd like to go to the ITR rear for a bit more rotation.

225/45/15 Hankook RS4s
Rota slips 15x8 +40
10k front (560lb/in) 5k rear (280lb/in) with megan EZ coilovers, +8 from open.
25mm ITR front, 14mm GSR sway
ES poly bushings, PCI bearings thoughout car with OE bushings remaining at rearwards front LCA mount and toe arms.