Broken valve spring - Page 2 - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

4 FN 27 · 12-13-2018, 11:51 AM

Quote:

Originally Posted by MX621

just because it hasn't dropped a valve doesn't mean the valves/guides are in spec. I'm curious to why the z/28 community thinks this isn't a issue? once my warranty is up, 1/2020 ill be pulling my heads to check. I hope your right.

100 years from now this will still be debated...and debated...and debated.

I am not leaning one way or another. I lost a Motor in my 2015 Z at 958 miles (can't say if it was a Valvetrain issue or not, GM would not allow us to open up the motor to CSI it) and GM took care of it 100%. The replacement motor will sit in the frame rails as built by GM until I die or it expires again...the same goes for my 2013 427 Vette...I won't loose any sleep over it in either case.

God had them bolted together so we can fix them. Otherwise they would be welded.

4 FN 27 · 12-13-2018, 12:01 PM

Quote:

Originally Posted by Zulu28

Have not been here for awhile. 2014 Z28 with air. 95K miles daily driver. Broken intake valve spring #6 cylinder. Just started missing real bad. No codes, no check engine light. Did not drop the valve. Changed all 16 springs JIC. Runs like new again. FYI - probably a good idea to change them at regular intervals. Cheap insurance. I had a Katech torquer cam in my 2008 Z06 with 921 springs and changed them every 25K miles. Thought these would last for the life of the LS7 but apparently not.

Yep an intake will sound like a miss...an exhaust will pop and bang...

On any motor you are revving to the redline should looked at frequently. On my PS motors we would check all 16 springs after each pass. Typically we would have to change 2-3 springs at every inspection. Only broke a couple but they would weaken running 10400 RPM at 1.0 inch + gross lift. Adding Spray Bars helped a little but the biggest gain in Spring life was found on the Spintron and coming up with the best engineered package from the Cam to the Valve Seat. In the end after countless hours of R&D we had springs maintaining after multiple passes.

Zulu28 · 12-13-2018, 12:52 PM

I do not redline the car. I believe "max" is theoretical; I do not turn my stereo all the way up either. Original rotors and brake pads. All 95K was on the interstate except the 5 miles from my house to the on-ramp. Did the wiggle test on the valves when I changed the springs and all were within spec.

Zulu28 · 12-13-2018, 12:57 PM

GM would not warranty due to headers/tune. Lost some torque when I added headers until I got the tune (DBR). 503 at the wheels. LG headers with high-flow cats.

Gbland60 · 12-13-2018, 01:04 PM

Would love to see pictures of your car zulu. I still can't stop thinking about 94,000 miles and not just the drivetain but all the other components as well.

Livernois Motorsports · 12-13-2018, 01:52 PM

Honestly that is impressive mileage for those heads. The LS7 are known for issues with the guides and exhaust valves. We have a great special on heads if you would like to send them in or we have a special for head and cam upgrade with installation for 4299$. This is for a manual car it is a little more for an auto. If you guys have any questions on anything feel free to call us at 313-561-5500. My name is Jake here is the link to the special

https://www.livernoismotorsports.com/product/LPP0118514

Zulu28 · 12-13-2018, 04:30 PM

Not a big picture taker. Here is one where I was playing a trick on my wife.

_Chigga · 12-13-2018, 04:43 PM

How are the LG Headers? I'm leaning towards Kooks but LG is 30 minutes away from my house

Gbland60 · 12-13-2018, 06:49 PM

Looks in good shape. I've just noticed last week my cradles were starting to show some surface rust. Just finished treating front and rear with a rust inhibitor. They look brand new again. GM went light on the paint everywhere on theses . Stamped steel suspension components are too thin to let the rust take over. Sir, your an owner of a Z/28 that deserved to have one having driven that many miles a day for 4 years straight . I guess the only real way to find out if a Z28 can be daily driven would be to ask you

Zulu28 · 12-14-2018, 09:14 AM

I love Lou's stuff. Great on the Vette but do NOT buy his headers for your Z/28. Get the ARH. They are the only ones that fit. I had to take a hammer and bash in the driver side down tube to make it clear the oil cooler. Daily driver is a big affirmative. Drove the Z06 daily and this is FAR more fun. Feels like it makes the road pay for every bump and I am pretty sure the carbon ceramic brakes slow the rotation of the earth when going west to east. Best car I have ever owned.

hjdca · 12-14-2018, 10:03 AM

Quote:

Originally Posted by Zulu28

Daily driver, 100 miles round trip to work and back home. Car has been great. Never tracked. Headers and a tune. More fun to drive than my Z06 with 545HP at the wheels. Original owner. Never redlined. Followed the 'severe' service schedule.

Mine is also a street car, but, not daily. I also drive a lot of fwy and the Z/28 is one of the best fwy cars. You just use all that torque, goosing it between 3K and 5K rpm and passing cars on the fwy like they are standing still. It is so fun to drive like that with all motor. Congrats on all those miles, I am still at 15K miles. PS. both my rotors and pads still look brand new. I did not even do the brakes break-in procedure. I can see how these pads and rotors would go 95K for me also --- fwy driving, you don't brake that much....

_Chigga · 12-14-2018, 11:19 AM

Quote:

Originally Posted by Zulu28

I love Lou's stuff. Great on the Vette but do NOT buy his headers for your Z/28. Get the ARH. They are the only ones that fit. I had to take a hammer and bash in the driver side down tube to make it clear the oil cooler. Daily driver is a big affirmative. Drove the Z06 daily and this is FAR more fun. Feels like it makes the road pay for every bump and I am pretty sure the carbon ceramic brakes slow the rotation of the earth when going west to east. Best car I have ever owned.

Thank you for the Response! LGs are off my list now

Venomcustom · 12-14-2018, 08:52 PM

Quote:

Originally Posted by Zulu28

I love Lou's stuff. Great on the Vette but do NOT buy his headers for your Z/28. Get the ARH. They are the only ones that fit. I had to take a hammer and bash in the driver side down tube to make it clear the oil cooler. Daily driver is a big affirmative. Drove the Z06 daily and this is FAR more fun. Feels like it makes the road pay for every bump and I am pretty sure the carbon ceramic brakes slow the rotation of the earth when going west to east. Best car I have ever owned.

Being in Nashville are you a member of the Music City Camaro Club?

Zslash28 · 12-15-2018, 06:01 PM

Bravo! Make me feel good knowing these cars have the potential to hit 100K miles in 5 years. Congrats!

12-13-2018, 01:52 PM	#20
Livernois Motorsports Drives: 2010 Camaro 454 LSX (SOLD) Join Date: Jun 2013 Location: Dearborn Heights, MI Posts: 792	Honestly that is impressive mileage for those heads. The LS7 are known for issues with the guides and exhaust valves. We have a great special on heads if you would like to send them in or we have a special for head and cam upgrade with installation for 4299$. This is for a manual car it is a little more for an auto. If you guys have any questions on anything feel free to call us at 313-561-5500. My name is Jake here is the link to the special https://www.livernoismotorsports.com/product/LPP0118514 Last edited by Livernois Motorsports; 12-13-2018 at 01:54 PM. Reason: no pics

12-13-2018, 04:30 PM	#21
Zulu28 Drives: 2019 Camaro ZL1 Join Date: Jun 2015 Location: Nashville, TN. Posts: 27	Not a big picture taker. Here is one where I was playing a trick on my wife. Attached Images

12-15-2018, 06:01 PM	#28
Zslash28 Jumanji Drives: '14 Z/28 - AGM - No A/C Join Date: Mar 2014 Location: Alaska Posts: 1,688	Bravo! Make me feel good knowing these cars have the potential to hit 100K miles in 5 years. Congrats! __________________ Keeper of the 5th Gen Z/28 Registry. Registry Facebook. Follow: @5th_gen_z28_registry I track wrecked Z/28s Total lost -41

12-13-2018, 12:52 PM	#17
Zulu28 Drives: 2019 Camaro ZL1 Join Date: Jun 2015 Location: Nashville, TN. Posts: 27	I do not redline the car. I believe "max" is theoretical; I do not turn my stereo all the way up either. Original rotors and brake pads. All 95K was on the interstate except the 5 miles from my house to the on-ramp. Did the wiggle test on the valves when I changed the springs and all were within spec.

12-13-2018, 12:57 PM	#18
Zulu28 Drives: 2019 Camaro ZL1 Join Date: Jun 2015 Location: Nashville, TN. Posts: 27	GM would not warranty due to headers/tune. Lost some torque when I added headers until I got the tune (DBR). 503 at the wheels. LG headers with high-flow cats.

12-13-2018, 01:04 PM	#19
Gbland60 Drives: 2015 z28 Black w/ac #645 Join Date: Jan 2017 Location: Southeast Texas Posts: 337 View My Garage	Would love to see pictures of your car zulu. I still can't stop thinking about 94,000 miles and not just the drivetain but all the other components as well.

12-13-2018, 04:43 PM	#22
_Chigga Drives: 2015 Z/28, #225 Red Join Date: Apr 2018 Location: Forney, Texas Posts: 136	How are the LG Headers? I'm leaning towards Kooks but LG is 30 minutes away from my house

12-13-2018, 06:49 PM	#23
Gbland60 Drives: 2015 z28 Black w/ac #645 Join Date: Jan 2017 Location: Southeast Texas Posts: 337 View My Garage	Looks in good shape. I've just noticed last week my cradles were starting to show some surface rust. Just finished treating front and rear with a rust inhibitor. They look brand new again. GM went light on the paint everywhere on theses . Stamped steel suspension components are too thin to let the rust take over. Sir, your an owner of a Z/28 that deserved to have one having driven that many miles a day for 4 years straight . I guess the only real way to find out if a Z28 can be daily driven would be to ask you

12-14-2018, 09:14 AM	#24
Zulu28 Drives: 2019 Camaro ZL1 Join Date: Jun 2015 Location: Nashville, TN. Posts: 27	I love Lou's stuff. Great on the Vette but do NOT buy his headers for your Z/28. Get the ARH. They are the only ones that fit. I had to take a hammer and bash in the driver side down tube to make it clear the oil cooler. Daily driver is a big affirmative. Drove the Z06 daily and this is FAR more fun. Feels like it makes the road pay for every bump and I am pretty sure the carbon ceramic brakes slow the rotation of the earth when going west to east. Best car I have ever owned.