Weird Problem From Track Day!? - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

CruscoZl1 · 07-12-2014, 10:10 PM

Took the ZL1 to the road course track for the first time today. All went well for the first few sessions, but then started to hear something sliding left to right and right to left under hard turns and corners.. Nothing in trunk sliding around sounded like under the car in the rear.. I pretty sure it is all "noise" not "feel" car still tracked well but could here something sliding only under turning hard not accel or braking.. Anyone know what this could be.. checked lugs on wheels and nothing was loose.. Car is at 510 race engineering now. Anyone have this issue or know what could be up?

Thanks!!

MTCobra · 07-12-2014, 11:35 PM

If you're sure nothing is sliding around I would ask what PTM mode you ran in? It didn't sound/feel like rear brakes being applied? Did you change the rear diff fluid...proper LSD FM was added?

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sycraft · 07-12-2014, 11:53 PM

Nice to meet you today, cant wait to see the build...

CruscoZl1 · 07-13-2014, 12:15 AM

Quote:

Originally Posted by MTCobra

If you're sure nothing is sliding around I would ask what PTM mode you ran in? It didn't sound/feel like rear brakes being applied? Did you change the rear diff fluid...proper LSD FM was added?

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Changed the brake fluid thats it.. PTM Mode 3, sliding with brakes applied and without

CruscoZl1 · 07-13-2014, 12:15 AM

Quote:

Originally Posted by sycraft

Nice to meet you today, cant wait to see the build...

Nice meeting you too! Ill be down again sure enough today was killer!

CHMSC · 07-13-2014, 12:31 AM

Make sure your battery and compressor are not lose.

CruscoZl1 · 07-13-2014, 12:32 AM

Quote:

Originally Posted by CHMSC

Make sure your battery and compressor are not lose.

battery was locked down tight

CHMSC · 07-13-2014, 06:43 AM

Quote:

Originally Posted by CruscoZl1

battery was locked down tight

Well then I would put it on a lift and make sure everything on the car is tight.
Not sure what it could be.

h018871 · 07-13-2014, 07:21 AM

Fuel?

how much did you have left in the tank?

white ZL1 · 07-13-2014, 08:26 AM

Quote:

Originally Posted by h018871

Fuel?

how much did you have left in the tank?

That was my first thought too. Sometimes it still freaks me out how much I can hear the fuel sloshing around at certain fill levels.

MTCobra · 07-13-2014, 08:31 AM

Between wind noise and the motor I've never heard much more.

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CruscoZl1 · 07-13-2014, 09:55 AM

Quote:

Originally Posted by h018871

Fuel?

how much did you have left in the tank?

fuel was about 3/4 full it wasn't that.. noise was like sliding then hitting something then sliding back and hitting the other side. like in a straight line not sloshing. Thanks for the feedback

CruscoZl1 · 07-13-2014, 09:56 AM

Quote:

Originally Posted by CHMSC

Well then I would put it on a lift and make sure everything on the car is tight.
Not sure what it could be.

thats what I'm thinking.. its getting work done to it at 510 racing so they will be checking it out as well..

THR ZL1 #1 · 07-13-2014, 10:18 AM

Glove box? . . . My wife and I were going nuts trying to find a clunk in her rag top . . was the bag of documentation sliding back and forth.

07-12-2014, 11:53 PM	#3
sycraft COTW 5/06/2013 Drives: 2017 Corvette Grand Sport-Ho-Vette Join Date: May 2012 Location: Milford, Michigan Posts: 3,201 View My Garage	Nice to meet you today, cant wait to see the build... __________________ 2017 Grand Sport, Borla X Pipe.....Enough Said

07-13-2014, 12:31 AM	#6
CHMSC ROAD COURSE JUNKIE Drives: 2012 SS/RS LS3 Join Date: Oct 2012 Location: Somewhere Posts: 4,868 View My Garage	Make sure your battery and compressor are not lose. __________________

07-13-2014, 07:21 AM	#9
h018871 Geoff Drives: 2020 ZL1 Green Join Date: May 2013 Location: Houston Posts: 1,720	Fuel? how much did you have left in the tank? __________________ Having a Blast https://www.camaro6.com/forums/showt...php?p=10741733

07-13-2014, 10:18 AM	#14
THR ZL1 #1 Perma Grinning Drives: 2012 Tom Henry Racing ZL1 Join Date: Feb 2012 Location: Schaumburg, IL Posts: 452	Glove box? . . . My wife and I were going nuts trying to find a clunk in her rag top . . was the bag of documentation sliding back and forth. __________________ Our Garage: 2018 Traverse High Country, 2017 Tom Henry Racing ZL1 Convertible, 2016 Silverado High Country HD, 2014 Camaro SS Convertible, 2012 Tom Henry Racing ZL1, 2002 Berger SS Phase II, 2001 Camaro SS Convertible, 1997 Hendrick Motorsports 30th Anniversary LT4 SS, 1992 Camaro RS Z03 25th . . .

07-12-2014, 10:10 PM	#1
CruscoZl1 COTW 6/16/14 Drives: 2014 CRT Camaro ZL1 Join Date: Feb 2014 Location: Austin, Texas Posts: 158	Weird Problem From Track Day!? Took the ZL1 to the road course track for the first time today. All went well for the first few sessions, but then started to hear something sliding left to right and right to left under hard turns and corners.. Nothing in trunk sliding around sounded like under the car in the rear.. I pretty sure it is all "noise" not "feel" car still tracked well but could here something sliding only under turning hard not accel or braking.. Anyone know what this could be.. checked lugs on wheels and nothing was loose.. Car is at 510 race engineering now. Anyone have this issue or know what could be up? Thanks!! __________________ Not Enough Traction // Build Thread Below http://www.camaro5.com/forums/showthread.php?t=356576 2014 ZL1

07-12-2014, 11:35 PM	#2
MTCobra Drives: 2014 ZL1 Join Date: Dec 2013 Location: So Cal Posts: 396 View My Garage	If you're sure nothing is sliding around I would ask what PTM mode you ran in? It didn't sound/feel like rear brakes being applied? Did you change the rear diff fluid...proper LSD FM was added? Sent from my iPad using Tapatalk

07-13-2014, 08:31 AM	#11
MTCobra Drives: 2014 ZL1 Join Date: Dec 2013 Location: So Cal Posts: 396 View My Garage	Between wind noise and the motor I've never heard much more. Sent from my iPad using Tapatalk