Author Topic: New GXP/Z0K sway bar part number (Read 121214 times)

Sol Asylum · « **Reply #125 on:** July 29, 2009, 10:31:04 PM »

I wouldn't cancel my order if I was you I would tell them that that is not what I ordered and it is unacceptable. Part numbers never supersede backwards that would be the definition of precede. Just for the hell of it make them try and prove that backward supersede thing to you, you know like documentation from GM.

lil goat · « **Reply #126 on:** July 30, 2009, 07:21:47 AM »

I would go over the parts managers head that is the silliest thing I ever heard, they need to give you the part at the new price. I spoke with the guys at Solstice Sport, they sell the Eibach sway bar and were going to see if they could do a good price for us on it, as the Z0K are scarce, unfortunately they are in the middle of race season. Any one tried the Eibach? Supposedly they are adjustable, must be the end links but I don't know.

snaponbob · « **Reply #127 on:** July 30, 2009, 08:16:11 AM »

This will raise the blood pressure of some, but so be it. That is not the intent.

1) The only realistic way a spring will "damage" a shock, assuming the spring is properly installed and/or doesn't break, is if it is too short and causes the shock to bottom out. That will at the very least damage the valving and could do other bad stuff. If a shock leaks, it is unrelated. Ask someone with leaky shocks that DOESN'T have coil overs.
2) Front toe in on a Kappa will increase understeer. A small amount of front toe out will help turn in, while too much will cause problems (the front wheels start to compete with each other as they turn further). The common range people were using at the 07 and 08 Solo Nats was from 1/16 - 3/16". Rear toe in on a GXP/RL will help controlling power oversteer, but very small amounts have real effect (1/16 - 1/8"). On the 2.4 NO toe in needs to be uses, and some were using 1/32 -1/16 toe OUT to free up the rear. (All this for Solo. Road racing would be different to compensate for suspension compliance under different loads than Solo generates.)
3) There is only one set of sway bars from Eibach. The set p/n is 38105.320. They are 32mm hollow front and 25mm hollow rear. According to Eibach they are no firmer than the FE3 bars. They came out in 2006 to help the handling of the FE3 cars. When asked if they would provide any improvement on an FE3 car they said NO. If somebody with an FE3 equipped car buys these assuming any measurable or perceptable changes will probably not be happy campers. Eibach only produces ONE set of bars for the Kappas. Eibach has not shared the bar rates.
4) Per Eibach the Pro sport springs are very close to the FE3 springs in rate and will drop the car approx. 1.0" front and 1.3" rear The SportLine springs are the same rates but will dump the car in the weeds at 1.6" front and 2.0" rear drops.

lil goat · « **Reply #128 on:** July 30, 2009, 09:41:58 AM »

Thanks for the info Bob, the info I found said the Eibach sway bars were adjustable, any truth to that, by the way that was according to Tire Rack. It seems that the Z0K are still the best choice, Solstice Sport can make them, it just won't be anytime soon, they are already tooled up as they made the ones on the Sears Sky.

snaponbob · « **Reply #129 on:** July 30, 2009, 10:06:17 AM »

The Eibach bars ARE adjustable, but over a small range. Having played the adjustment game with bars on the Kappa, rear adjustments are barely felt. The front adjustments CAN be felt but it is subtle. As was learned in the process of going from Stock to Street Prepared, all the suspension tuners said the same thing - adjust and tune the handling WITHOUT bars, then tune with the bars, and fine tune with the shocks, and the tweaks are with tire pressures once basically set with temps and rollover.

Thank goodness e-bay and sccaforums.com are out there, or I would be a$$ deep in springs!!!! Sure am glad that this car is easy to work on. Struts would have been hell by comparison.

LatinVenom · « **Reply #130 on:** July 30, 2009, 06:11:28 PM »

I order the set of Z0K bars with the new part numbers about a month ago, the front came as expected but the rear is on back order.
I am hoping the rear one will come in sometime in August.

kennysabarese · « **Reply #131 on:** July 30, 2009, 07:17:07 PM »

Quote from: snaponbob on July 30, 2009, 10:06:17 AM

As was learned in the process of going from Stock to Street Prepared, all the suspension tuners said the same thing - adjust and tune the handling WITHOUT bars, then tune with the bars, and fine tune with the shocks, and the tweaks are with tire pressures once basically set with temps and rollover.

What adjustments would you make to tune the handling other than springs before adding the bars or shocks?

snaponbob · « **Reply #132 on:** July 30, 2009, 07:29:17 PM »

Quote from: kennysabarese on July 30, 2009, 07:17:07 PM

What adjustments would you make to tune the handling other than springs before adding the bars or shocks?

Besides alignment?

If you plan on new coil overs (such as BCs) they should be matched to the springs. The springs will basically set the overall handling while shock adjustments can be used to fine tune things once the bars are squared away. Given the few REAL choices for bars on FE3 Kappas, for road racing the GXP/Z0K bars should be just about right. An FE3 front bar with the GXP/Z0K rear bar may loosen the rear just fine for Solo but could get you backing into hard objects at a road course. You find that KW V3s will come with ~285 pound springs. BC will ship them with anything you want but generally matches the front and back as KV does. However, BC rates them in "K's", so just multiply their number by 56 to convert to pounds/inch rates. Stock FE3 springs are 175f/220r which is kind of weird, but I guess everyday ride plus GM's compulsion for understeer was established with the bars that were installed. Lots of choices, huh?

Coupe0091 · « **Reply #133 on:** July 30, 2009, 07:48:19 PM »

Well,

They wont reorder the new part number. They wont do anything other than cancel the second one from coming in. Good thing is that I had not paid for the first one yet either.

I ended up cancelling everything I had not paid for yet, including a second set of streed edition wheels. On to CED and to find another local dealer for parts (just in case)

Ill be calling the General Manager later today. But I expect that to go nowhere.

Kev

snaponbob · « **Reply #134 on:** July 30, 2009, 10:15:05 PM »

Quote from: Coupe0091 on July 30, 2009, 07:48:19 PM

Well,

They wont reorder the new part number. They wont do anything other than cancel the second one from coming in. Good thing is that I had not paid for the first one yet either.

I ended up cancelling everything I had not paid for yet, including a second set of streed edition wheels. On to CED and to find another local dealer for parts (just in case)

Ill be calling the General Manager later today. But I expect that to go nowhere.

Kev

Like they'll GAF.

Coupe0091 · « **Reply #135 on:** July 31, 2009, 12:07:09 AM »

Ironically,

I called and left a message for the GM to call me back.

About 20 mins later I got a call back from the parts mgr stating he is going to talk to their supplier for a credit so he can sell them to me at the lower cost.

About 1 hour later, the GM called me back, and I explained the situation. He is going to handle it.

All I wanted was the parts guy to at least try. It took a little, but he is now trying to do something, and that was before the GM as made aware.

Ill keep you all posted.

Kev

Hal 9000 · « **Reply #136 on:** August 11, 2009, 04:35:56 PM »

I would love to upgrade my N/A sway bars, and am having trouble tying together all the info.
Can someone help me fill in the blanks here?

NA Front:____ mm:
NA Rear:_____ mm:

NA ZOK Front: ____ mm: P/N: _______ (I believe someone said these are just stock GXP bars.)
NA ZOK Rear: _____ mm: P/N: _______

GXP Front: 33 mm: P/N: _______
GXP Rear: 26 mm: P/N: _______

GXP ZOK Front: ____ mm: P/N: _______
GXP ZOK Rear: 27 mm: P/N: 25919110

I'm going back through now and will fill in what I find.

Chemist · « **Reply #137 on:** August 11, 2009, 06:00:42 PM »

From a GM Engineer on the BB:

(See bottom table in file)

Hal 9000 · « **Reply #138 on:** August 13, 2009, 10:51:18 AM »

AWESOME!! Now I just have to figure out what I want to do. Anyone in texas have a set of stock LNF sway bars you want to get rid of?

lil goat · « **Reply #139 on:** August 13, 2009, 03:16:58 PM »

Last I heard no one can find the Z0K bar for the GXP, if they ever make more I am sure there will be lots of old GXP FE3 bars available. I gave mine to Critterman, and Jonymac gave his to Smartin, U-238 might still have his old one.

Uranium-238 · « **Reply #140 on:** August 13, 2009, 03:49:11 PM »

Mine is somewhere between here and Cali.

I sent mine to PURE_fun, UPS lost it in transit. Still trying to get things resolved...

lil goat · « **Reply #141 on:** August 13, 2009, 07:51:04 PM »

The UPS guy installed it on the UPS truck

Sol Asylum · « **Reply #142 on:** August 13, 2009, 08:57:25 PM »

LG didn't you have a problem with UPS delivering Kappa parts late at the last mod meet?

Uranium-238 · « **Reply #143 on:** August 13, 2009, 09:02:06 PM »

Quote from: lil goat on August 13, 2009, 07:51:04 PM

The UPS guy installed it on the UPS truck

Could be. Best they can figure it became separated from it's shipping label. And since it wasn't insured, they're making things difficult. Why didn't I insure it? Well, I didn't think anything could harm a steel bar...

lil goat · « **Reply #144 on:** August 14, 2009, 08:16:44 AM »

Quote from: Sol Asylum on August 13, 2009, 08:57:25 PM

LG didn't you have a problem with UPS delivering Kappa parts late at the last mod meet?

No really a problem, but yes there was some stress, as I had a deadline I had to leave by.

Why would you insure a steel bar? Don't they have some kind of insurance that comes with it, to like $100 or something.

snaponbob · « **Reply #145 on:** August 14, 2009, 09:10:59 AM »

Queried my Parts Manager buddy about the rear bar. Here is his response (and he is usually pretty optimistic AND correct) --- The rear bar is pretty much unobtainable right now. I'm coming up with goose eggs an all attempts and GM has no idea when they'll have them again. Doesn't sound good. However, if somebody wants to play Private Investigator, one could contact Phoenix Racing to see if they have a bar or could check with John Heinrecy as he has been one of their drivers. He could certainly find out what the status is.

kennysabarese · « **Reply #146 on:** August 14, 2009, 11:23:21 AM »

Should I go with Eibach swaybars if the Z0K rear never comes back in stock?

snaponbob · « **Reply #147 on:** August 14, 2009, 01:26:28 PM »

Quote from: kennysabarese on August 14, 2009, 11:23:21 AM

Should I go with Eibach swaybars if the Z0K rear never comes back in stock?

Doubt it would help at all as it was intended as an upgrade from the FE2 system and wound up being about the same as the FE3. BTW, just got off of the phone with Phoenix Performance --- NO luck there. Just sent PM's to "connected" people to see what they can find out.

kennysabarese · « **Reply #148 on:** August 14, 2009, 01:41:25 PM »

oh. forgot that... damnit.

LatinVenom · « **Reply #149 on:** August 14, 2009, 01:46:48 PM »

Snaponbob,
Thank you for trying to get something done about the Z0K rear bar for the GXP.
If GM wants to keep me as a customer then they need to take care of their present customers.
The only hope is an aftermarket vendor that would see a market need and would clone the Z0K bars.

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Author Topic: New GXP/Z0K sway bar part number (Read 121214 times)

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