Springs
#1
Springs
I have Koni front and Bilstein rear shocks and factory springs and does not have the 4X4 look it actually has between 1"-2" approx. gap and rides pretty nice, I am happy with the front, but the rear when hitting a dip or going over R/R tracks, etc the car bottoms out, now if I used a stiffer spring would it handle and ride close?, maybe a variable spring?
#5
if you dont have the proper springs to damper the drop they will bottom out like that. i never bottom out on my car and im dropped probably 1.5" all the way around and i have konis on all fours.
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#10
#11
The car only has 22,000 on it and yes the shocks were one of the first mods...at Strano's recomendation after the shocks were put on while going over a R/R and turning, the rear will sometimes loose traction and 'float" a little and Strano said to get a pair of non-WS6 bump stops, not sure the logic in this because I think they are longer so they force the rear back down sooner to keep the traction? I don't know, the car feels like it bottoms out a fair amount, if this is the longer bump stops, maybe I need to go back to the stockers or maybe it's just the shocks, springs, rear end, rear sway bar, torque arm, etc are all stock if that helps.
#12
TECH Senior Member
The car only has 22,000 on it and yes the shocks were one of the first mods...at Strano's recomendation after the shocks were put on while going over a R/R and turning, the rear will sometimes loose traction and 'float" a little and Strano said to get a pair of non-WS6 bump stops, not sure the logic in this because I think they are longer so they force the rear back down sooner to keep the traction? I don't know, the car feels like it bottoms out a fair amount, if this is the longer bump stops, maybe I need to go back to the stockers or maybe it's just the shocks, springs, rear end, rear sway bar, torque arm, etc are all stock if that helps.
If your rear end is "floating" its probably time for some new rear shocks assuming everything else is in working order.
#13
TECH Senior Member
iTrader: (35)
1. driving to fast for the road conditions.
2. too soft of a spring rate.
3. lack of suspension travel.
4. insufficient rebound dampening.
5. all of the above, or any combination of the above.
You have the basic idea right and he probably does need new rear shocks, but the cure isn't more compression dampening because that's not the underlying cause.
#15
LS1TECH Sponsor
iTrader: (41)
Respectfully you guys need to get it through your heads () that it's not bad or abnormal to hit your bumpstops. How you hit them, or if you are riding on them where the shock is not given room to do some damping is a problem. But the term bottoming out, and hitting bumpstops is used interchangeably and with an automatic assumption that hitting the stops is the end of the world. It's not.
Now, the Z28 stops are softer. So when you hit the stops you get a more gradual rising wheel rate vs. the WS6/SS type stops. The Z28's are no longer when you consider the WS6/SS stops use a spacer, in fact the oveall height is the same, but the black ones are more abrupt. I spoke to a man yesterday (in suspect the same person) about this. And the car was using Z28 stops *with* the bumpstop spacers from a Z28. I recommened he fix that and see what the result is.
I'm not saying that he might not want to change rear shocks. Though I see in this post he's saying he as Koni fronts, and if it's the same man he told me he had Revalves on the car front and rear. And ultimately a shock change might help.
However-- He could not tell me if the ride has changed over the miles (which makes me think it hasn't and that shock wear is not the issue). Further until the bumpstop setup is fixed and assessed I can't recommend anything as much as someone might like me too. My bag isn't just blurting out parts you could use, but trying to recommend the correct part for the job. Clearly we can't get an accurate read they way the bumpstops were setup.
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www.stranoparts.com --814-849-3450
Results matter. Talk is cheap. We are miles beyond the success anyone else has had with the 4th gens, and C5, C6, C7 Corvettes,
10 SCCA Solo National Championships, 2008 Driver of they Year, 2012 Driver of Eminence
13 SCCA Pro Solo Nationals Championships
2023 UMI King of the Mountain Champion
Last edited by Sam Strano; 01-20-2009 at 11:14 AM.