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Ask Tadge Archived: Corvette's Chief Engineer Tadge Juechter answers questions from the CorvetteForum community.
View Poll Results: Which Question Should Tadge Answer?
Optional Cooling Pack for C7
60.33%
Design Philosophy Differences Between C6 and C7
19.01%
Direct Injection Impact on LT1/LT4
11.57%
M7 Popping out of Gear
9.09%
Eccentric Bolts vs Camber Plates
0
0%
Voters: 121. You may not vote on this poll

Ask Tadge Poll: Ending 3 May, 2015

 
Old 04-26-2015, 09:44 AM
  #1  
jvp
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Default Ask Tadge Poll: Ending 3 May, 2015

Vote for which of these 5 you'd like to have Tadge answer. The winner will be submitted Sunday, 3 May. The questions are posted in the replies below, with links to their respective threads.
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Old 04-26-2015, 09:50 AM
  #2  
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Default Optional Cooling Pack for C7

Original discussion is here.

SBC_and_a_stick asked:
Does GM have any plan to sell a cooling pack in the future for the C7 chassis? Is it even a possibility, and if so, what would it look like?

Background
The limitations of the radiator and related parts that help the car stabilize oil and water/coolant temperature are easily reached when the C7 Z06 is driven aggressively (such as on a track at an HPDE event). There are now many reports from owners overheating the cars in 80 degree weather or even in 70 degree weather. This limitation of the car as sold will be exacerbated in the coming summer months. Many media outlets have reported overheating. This includes every occurrence when Motor Trend tested the C7 Z06 and during daily driving the C7 Stingray by Edmunds. See here:
http://www.edmunds.com/chevrolet/cor...tain-road.html

The commonly displayed overheating message is "Engine Overheating, A/C has been turned off, please idle engine." Coolant temperatures in particular quickly approach 257 degrees which prompt the computer to issue a warning in the center display.

Other manufacturers offer such an optional package to effectively cool the car. See for example the new Shelby GT350 Track Pack is described as follows: "optional with the Track Pack, an engine oil cooler and a transmission cooler."

https://media.ford.com/content/fordm...0-mustang.html
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Old 04-26-2015, 09:51 AM
  #3  
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Default Design Philosophy Differences Between C6 and C7

Original discussion is here.

grcor asked:
The C6 had a metal frame for the base and convertible cars and a light aluminum frame for the high performance versions (Z06, ZR1). Rule #1 for all great sports cars is that they be light and nimble and the C6 Z06 is a great example of this. Also, there were no complaints from anyone that the frames on the C6 were not strong enough or were too flexible. On the C7 you made a stiffer aluminum cast and hydro form frame for all corvette models. Why, so everyone can take the roof off and the convertible can use the same frame. But the C7 frame is heavier than the C6 aluminum frame and so the C7 Z06 and C7R are burdened with extra weight. Cylinder deactivation is the wrong technology for the C7 Z06 because of all the extra weight. Power adjustable seats with electric heaters in the Z06? Who would take a Z06 out on a freezing day with those track tires on it? Clearly everyone forgot Rule #1 on the C7.
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Old 04-26-2015, 09:54 AM
  #4  
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Default Direct Injection Impact on LT1/LT4

Original discussion is here.

vettman96 asked:
Is there any issue known with deposit buildup on the back side of the intake valves due to not having a port injection system? I have read about possible issues but have seen nothing definitive as it would apply to the LT1 powerplant.
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Old 04-26-2015, 09:55 AM
  #5  
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Default M7 Popping out of Gear

Original discussion is here.

Fastmikefree asked:
Many of M7 owners are reporting their gearbox popping out of gear at any speed which can potentially be a safety issue!

Has that been corrected or under investigation? Is the rubber band that some pictures of shifter are showing for anything in that problem?

Many thanks.
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Old 04-26-2015, 09:59 AM
  #6  
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Default Eccentric Bolts vs Camber Plates

Original discussion is here.

jvp asked:
Has your team considered replacing the Corvette LCA eccentric bolts with camber plates, and handling camber and caster with shims on the UCA? It might make alignments take a bit longer the first time, but they'd hold more solidly for those of us that like to track our cars.

Thanks!
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Old 04-28-2015, 07:53 AM
  #7  
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Default Voted for cooling

Originally Posted by jvp
Vote for which of these 5 you'd like to have Tadge answer. The winner will be submitted Sunday, 3 May. The questions are posted in the replies below, with links to their respective threads.
Tkx for running this optional voting. I doubt anything will happen since they did not listen to all the forum posts since last Dec when it was cool/cold Wx in Fl and GA.
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Old 05-02-2015, 06:52 PM
  #8  
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Default

Hey gang -

I'll re-post this reminder at the bottom of whichever question wins the poll tomorrow (seems pretty obvious... ) but: Tadge will be on vacation this coming week, so it may take a bit of time before we get an answer to it.

Just a heads-up.
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