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Ask Tadge Poll: Week Ending 6 Feb, 2015

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Ask Tadge Post your questions here for Corvette's Chief Engineer Tadge Juechter and then discuss the questions and his answers.
View Poll Results: Which Question Should Tadge Answer?
C6 Z06 and LS7 Question
59.76%
C7 Z06 and Over-heating on Track
26.13%
C7 - Dexos1 or Mobil 1
2.10%
GM Updating Corvettes With Newer Software
9.31%
Nurburgring and the C7 Z06
2.70%
Voters: 333. You may not vote on this poll

Ask Tadge Poll: Week Ending 6 Feb, 2015

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Old 02-06-2015, 01:04 PM
  #1  
jvp
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Default Ask Tadge Poll: Week Ending 6 Feb, 2015

Vote for which of these 5 you'd like to have Tadge answer. The winner will be submitted Sunday, 8 Feb. Here are the links to the actual threads:

C6 Z06 and LS7 Question
C7 Z06 and Over-heating on Track
C7 - Dexos1 or Mobil 1
GM Updating Corvettes With Newer Software
C7 Z06 and the Nurburgring
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Old 02-06-2015, 06:01 PM
  #2  
dannyman
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Supporting the C6 camp!

Voted





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Old 02-06-2015, 07:18 PM
  #3  
AZDANZ06
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Originally Posted by dannyman View Post
Supporting the C6 camp!

Voted





Dannyman
Thanks


This question needs answered:


Originally Posted by AZDANZ06 View Post
Tadge,

I am writing to you on behalf of all C6 Z06 Owners here at the Corvette Forum. There has been way too many C6 Z06 owners that have suffered LS7 engine failures due to dropped valves. GM claims that there was a manufacturing problem that was subsequently corrected, yet engines and off the shelf replacement cylinder heads produced after that date are also failing at an alarming rate. Loyal owners of even extremely low mileage vehicles are continuing to measure valve-to-guide clearances far beyond service limits and have had their heads reworked at a significant cost. This is evidenced by a cross section of Corvette Forum Members who have had their valve-to-guide clearances measured, 88% of the 208 member cars checked have had out of spec valve guides on C6 Z06's built from 2006 through 2013. With the apparent widespread incidence of excessive valve guide wear among LS7's, does GM know anything regarding the root cause of the issue and/or potential mitigation actions in order for LS7 owners to regain confidence in the platform and to retain loyal GM Customers?

We look forward to your answer on this critical issue.
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Old 02-06-2015, 07:35 PM
  #4  
b4i4getit
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Got my vote for LS7 issue.
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Old 02-06-2015, 07:51 PM
  #5  
1968swbbigblock
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Ls7 gets my vote
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Old 02-06-2015, 08:54 PM
  #6  
Josh B.
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Really annoying that there is significant concern for a forced induction car to overheat...in the light that so many C6Z owners have to tear into a handbuilt engine to fix something that GM got wrong, or risk BLOWING THE ENGINE!

Cooling is a common concern for FI cars, which is a really good reason to avoid tracking a FI car...
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Old 02-06-2015, 09:11 PM
  #7  
Undy
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Voted!!
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Old 02-06-2015, 10:33 PM
  #8  
phantasms
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C7Z owner voted for LS7!
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Old 02-06-2015, 10:39 PM
  #9  
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Originally Posted by phantasms View Post
C7Z owner voted for LS7!
YOU are not allowed in this section.






You're supposed to be out hooning around with your Z06 in the snow!
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Old 02-07-2015, 09:03 AM
  #10  
Quick Silver Z
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I voted for the LS7 exhaust valve issue and would love to finally have someone at Chevrolet give a definitive answer.

Thank you for creating this section!
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Old 02-07-2015, 09:21 AM
  #11  
psp6158
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Looks like we are way ahead so far... I have to admit, while I'd love to hear what he has to say about this, not being able to get parts for a C5 is pretty deserving of an answer. I think we are second in line!
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Old 02-07-2015, 09:39 AM
  #12  
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Just voted for the c6 zo6 question!
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Old 02-07-2015, 12:03 PM
  #13  
got2hav1
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Voted.
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Old 02-07-2015, 09:13 PM
  #14  
RossN
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Voted, and I second a Big Thank You to JVP for this section and for Tadge stepping up and supporting Owners questions.
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Old 02-08-2015, 11:34 AM
  #15  
Burkdog62
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Voted for my C6 brothers this week!
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Old 02-08-2015, 02:57 PM
  #16  
jvp
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Poll is closed and this question has been sent to Tadge.
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Old 03-23-2015, 05:25 PM
  #17  
SHM
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I realize this poll is closed & I'm late. But I vote for this to be answered, too. I only started learning about this issue recently. It's got me plenty scared.
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