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Old 02-17-2018, 10:45 AM   #757
JusticePete
 
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Quote:
Originally Posted by suprchrgd View Post
thanks Pete. I sent you a pm. i may be making a trip to myrtle each this summer and may just drop my car off for a few days while I head further south.
And I replied. Look forward to meeting you!
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Old 02-20-2018, 07:57 PM   #758
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I just spent the better part of an hour reading through this thread. I drive a 2015 ZL1 with all OE suspension components. The only difference in running gear is a 315/35 rear tire, currently Michelin Pilot Super Sport. I will probably switch to Firestone Firehawk Indy 500 to try and mitigate costs. I probably drive 70% street, still taking corners more aggressively than most. The other 30% is 12 autocross events a year and 3-4 honest hours of road course time annually. My alignment is untouched and I don't know yet what the actual values are. My front tires show more wear outside than inside and understeer is my main concern. It appears that I would benefit from the following specs.

Front camber -1.5 deg
Front toe 0.0
Rear camber -0.5 max
Rear toe +0.12 deg

Let me know if I'm on the right track as I plan to get the car on the rack before I get much deeper in the season.

And Pete, I started at the Camarocross at the 2015 Camaro Fest in BG, so it's your fault I autocross regularly now.
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Old 02-20-2018, 09:15 PM   #759
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Originally Posted by p3jason View Post
I just spent the better part of an hour reading through this thread. I drive a 2015 ZL1 with all OE suspension components. The only difference in running gear is a 315/35 rear tire, currently Michelin Pilot Super Sport. I will probably switch to Firestone Firehawk Indy 500 to try and mitigate costs. I probably drive 70% street, still taking corners more aggressively than most. The other 30% is 12 autocross events a year and 3-4 honest hours of road course time annually. My alignment is untouched and I don't know yet what the actual values are. My front tires show more wear outside than inside and understeer is my main concern. It appears that I would benefit from the following specs.

Front camber -1.5 deg
Front toe 0.0
Rear camber -0.5 max
Rear toe +0.12 deg

Let me know if I'm on the right track as I plan to get the car on the rack before I get much deeper in the season.

And Pete, I started at the Camarocross at the 2015 Camaro Fest in BG, so it's your fault I autocross regularly now.
That is the mission for CamaroCross. Thank you for letting us know it worked.

You are on the right path with your alignment spec. Add a 32mn rear bar and tear it up at the CamaroCross in BG this year!
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Old 02-22-2018, 01:23 PM   #760
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Originally Posted by JusticePete View Post
That is the mission for CamaroCross. Thank you for letting us know it worked.

You are on the right path with your alignment spec. Add a 32mn rear bar and tear it up at the CamaroCross in BG this year!
JP, I would like to second the 32MM rear bar. I bought one for my 2014 1LE and took it back to the autocross after running 6 or more events prior. I could not believe how much difference it made. The car has no understeer, and just feels way more balanced than with the stock 1LE bar. No more plowing into the turns for me! Question is now what to do with the old 1LE bar.....
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Old 02-23-2018, 09:55 AM   #761
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Originally Posted by 3rdGenAg2010 View Post
JP, I would like to second the 32MM rear bar. I bought one for my 2014 1LE and took it back to the autocross after running 6 or more events prior. I could not believe how much difference it made. The car has no understeer, and just feels way more balanced than with the stock 1LE bar. No more plowing into the turns for me! Question is now what to do with the old 1LE bar.....


Sell it to an on the budget build Camaro owner for use with the skinny OEM front bar
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Old 02-23-2018, 01:42 PM   #762
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Rear Bar

Quote:
Originally Posted by 3rdGenAg2010 View Post
JP, I would like to second the 32MM rear bar. I bought one for my 2014 1LE and took it back to the autocross after running 6 or more events prior. I could not believe how much difference it made. The car has no understeer, and just feels way more balanced than with the stock 1LE bar. No more plowing into the turns for me! Question is now what to do with the old 1LE bar.....
3rdGen....shoot me a PM with a price. I will buy your bar. I am in Pearland.
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Old 02-23-2018, 09:01 PM   #763
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We'll there you go.
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Old 08-15-2018, 08:51 AM   #764
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I have 1" lowering springs and can't seem to get my alignment correct. The rear camber is -2.0° on the left and -0.8° and it's really chewing up my 22" tires. No shop that I've taken it to has been able to correct the left wheel, and I'm at a loss for what to try. I have the camber adjustment bolts already, and was thinking that maybe one of the control arms is bent even though they visually look fine. Without changing springs, what other areas could be causing one side to be that far out?

Would camber/caster plates help? What about re clocking the bushings? Maybe adjustable control arms?

Last edited by Urbanizer; 08-15-2018 at 10:22 AM.
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Old 08-15-2018, 10:42 AM   #765
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There are no camber plates available for the rear of this car.

There should be no issue getting more than -0.8° negative camber with 1" springs.

I would verify that the install was done correctly and that the spring is sitting properly, and then time the bushings.

The rear camber is adjusted via the inner bolts of the lower control arms. Not sure what camber bolts you have but unless they allow more movement than the factory ones (bolt shaft closer to the edge of the washer) then what you can do - besides getting different bolts like from JPSS - is to drill/grind out the elongated hole for the bolt to allow for even more movement.

If all else fails, perhaps something is bent. Have you hit any large potholes or curbs ever? Rear-end accident?
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Old 08-15-2018, 11:35 AM   #766
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Thanks for the suggestions, I don't know 100% that the bushing were timed so I will start there.

How can I tell what camber bolts will give me the most adjustment? JPSS rates them in degrees of adjustment (1.8°) but isn't that directly related to the bolt's length? I'm trying to determine what I have on now vs what I would need.

I did have a pretty big curb hit 4 years ago, but nothing appears bent so I'm hesitant to just start replacing everything down there. I was leaning towards getting shorter aftermarket control arms, but feel like adding a degree of camber doesn't warrant such a big purchase.
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Old 08-15-2018, 02:05 PM   #767
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Have your alignment tech turn the Toe Eccentric to a neutral position, the eccentric not touching the fences on either side used for adjusstment. If they cannot get to the same number as the opposite side, check for a bent link. We chased on a few weeks ago, couldn't figure it out. When we decided to upgrade to Z/28 trailing arms, we found the tup portion of the OE arm was bent.

Know that we were looking for a bent arm. From the bottom it looked fin. It was twisted on the top, not visible from the bottom even when we were looking for damage.
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Old 08-15-2018, 02:19 PM   #768
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hmm good idea. The rear toe right now is -0.14° L and 0.17°R which is pretty wonky so something probably is bent; if we can't find it by inspection should I disassemble and take a closer look?
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