DF

I bought a set of Koni SA 4thG front, 3rd rear from Sam late last year. I set the shocks to the prescribed use for spirited daily driving (no track no autocross), and did not install them myself. I should have asked this sooner, but my 2K SS is not my daily driver. I just finished a cross country road trip and I bottomed out the rear right on most big bumps.

I know Im lowered with the G2 springs, but this is annoying. Shouldnt the shock be able to handle this? There is a chance that the installer fiddled witht he settings on install. What setting should the rears be? inorder to adjust the rear konis (3rd gen) I have to remove the shock right? (I hope not)

TIA

Chocolate Apocalypse

iTrader: (6)

I take it you dont have an adjustable PHB? You should pick one up to get the rear back into alignment after lowering otherwise it'll just keep doing that.

99Bluz28

iTrader: (35)

If your car has the rear bump-stop spacers on it , remove them!

DF

I have an aPHB along with LCA, LCA relo brackets, SFC. My rear end appears centered as I look at it on the ground.

I bump stop spacers were removed years ago.

Any other thoughts? I have a feeling that Ill have to tear this thing down to adjust something.

TIA.

Luder[PAK9]

what setting is your rear shocks at?

ae13291

iTrader: (8)

are u sure the bump stops are hitting? or is it something else hitting? but its weird if the rear bump stop spacers are removed it shouldent bottom out

DF

I set the rear adjustment to full soft, as has been recommended by Sam and other board members.

I am also sure that the rear end hits the bump stops on chassis as there is a nice rubberized/ polished spot right under it on the rear axle.

When I hit a moderate bump, all other corners of the car are fine but I get a hard thump from the right rear. Should I be considering firming up the shock?

I know that Im close to slammed with the G2 springs, but Im considering returning to the 4x4 SS springs because im tired of the bottoming out.

any thoughts?

TIA

99Bluz28

iTrader: (35)

How many turns from full soft, to full hard on the rear koni 3 ? Try stiffening them up a little.

Let me know if this helps or not.

99Bluz28

iTrader: (35)

Are both of the upper spring seats in good condition?
Also are the lower spring pigtail ends indexed correctly(pointed toward front of car)?

OK, I looked over the adjustment procedure here:
http://www.koni-na.com/mono.cfm

Try 1 click from full soft.
If that only helps a little try 2 clicks,
if it helps a lot your done!
If it makes it worse, put them back to full soft and .
Then you can all so try cutting up to 1" max off the bump stops.

Trev_SS

iTrader: (17)

if it is just the one side then it makes me think that the shock is blown which is very possible

DONAIMIAN

iTrader: (18)

Dont remove the bump stops, get your hands on a set of the base trans am/camaro bump stop if anything. How exactly low is the car? Pics or measurements?

Urban Legend

iTrader: (5)

I can tell you right now that its not the shock bottoming out. Thats the same combo that I have been running out on the street since 2006. You have to look elsewhere.

jbs02somws6

iTrader: (1)

Aren't those G2 springs just re-badged Eibach Pro-kits? If so the spring rate is too soft for such a short spring and shocks aren't going to fix it completely. I'm experiencing the same problem on my Pro-kit rear springs with Bilstein re-valves. I'm going to order a set of BMR rears or do the heater hose mod on my stock springs to fix this problem. Call Strano parts and he'll explain what's going on. You'd be best off to just get the Strano spring set and call it a day.

bluebird00

iTrader: (9)

im also having the same issue,im thinking about getting some drag bags to get rid of the bottom out issue and to raise the rear about .5"

djsanchez2

iTrader: (14)

I was having the same issue with my blown stock shocks and Pro-kit. I removed the bump stop spacer and it hasn't done it since. It requires nothing more than undoing two bolts and taking off the spacer then bolting the bump stop back on. There is no difference in SS, Z-28 or RS bumpstops. The SS's with 10spokes got the spacer.

Urban Legend

iTrader: (5)

Please tell me where did u get this from. Educate me please.

xBROKEx

iTrader: (7)

nope G2's have different spring rates that the prokit

99Bluz28

iTrader: (35)

The G2 springs are made by Hyperco, and IMO a better quality spring.

Louis

iTrader: (7)

Yes, Made by Hypercoil for us. 180-225 Progressive. excellent spring with a lot of development work on the track.

Chocolate Apocalypse

iTrader: (6)

I had G2s on a previous fbod with Bilstein HDs (all I could afford at the time and way too soft) and on decent sized bumps I'd usually rub a bit on the body on the inside of the fenderwell with a thud. Look for a clean spot forward and a little up from the rear axle, there is a part of the body that sticks out a bit. Its flat and the paint was rubbed off on both sides of my car.