C7Z blows up at Mid-Ohio
08-27-2015, 01:39 PM
#121
Le Mans Master
So how did this thread turn into a thread praising a car that just blew up?
08-27-2015, 01:46 PM
#122
I have an idea, ask the dealer the change the engine. It worked for me after my motor popped, still love the car!
Let's focus on the solution not the problem for this guy!
https://www.corvetteforum.com/forums...ocumented.html
Let's focus on the solution not the problem for this guy!
https://www.corvetteforum.com/forums...ocumented.html
08-27-2015, 01:54 PM
#123
Drifting
Where are the Google links and math charts to back this up
08-27-2015, 01:54 PM
#124
Melting Slicks
I fail to see how changing oil at 500 miles would solve anything. If crap is in the engine that is from a point past the filter, you're not doing anything good by changing the oil at 500 miles. If I'm correct that mean there is crap in the engine block oil passages that was not cleaned up correctly, or dirt in the crank which is taking out bearings. Again if that's the case, only way to prevent that is to disassemble and clean it.
The filters today are able to remove most if not all particles that could cause damage, the only way for that to go around the filter is if the filter gets clogged, the by pass valve will open and un-filtered oil will be pumped into the engine (and I'm assuming the LT4 has such valve like the Gen 1 SBC/BBC design did).
Just sayin'
The filters today are able to remove most if not all particles that could cause damage, the only way for that to go around the filter is if the filter gets clogged, the by pass valve will open and un-filtered oil will be pumped into the engine (and I'm assuming the LT4 has such valve like the Gen 1 SBC/BBC design did).
Just sayin'
Bish
08-27-2015, 02:05 PM
#125
Race Director
08-27-2015, 02:07 PM
#126
Le Mans Master
I've had boosted engines for 15 years now, 600+ hp for the last 10. What I think is happening, the break in and factory tune adds more fuel/less timing. Well, fuel under boost will get past the rings and get into the oil. I suspect the breakin is part of the rings seating well. I change my oil after every weekend race. It's cheap compared to a 15-20k engine. Even my 2015 Denali 6.2 after 4000k miles has more power and doesn't feel sluggish like it did when new before the break-in period. I want to buy a used C7Z when the price comes down
08-27-2015, 02:18 PM
#127
Do you have a problem with reading comprehension? I've said repeatedly that the number is closer to 1 in 100 than 1 in 1000. If it wasn't closer to 1% then the GM spokesperson would have said 1 in 1000, 2 in 1000, or whatever number some on here seem to believe. We aren't talking about a few engine failures here , the actual number is probably in the range of 50-80 out of 9000 cars which isn't good IMO. If they said it was less than 5% would you say "see it is 1 in 1000 since that is certainly less than 5%"
He wants proof that you are really telling the truth or he won't believe it
Where are the Google links and math charts to back this up
He wants proof that you are really telling the truth or he won't believe it
Where are the Google links and math charts to back this up
Last edited by GP1224; 08-27-2015 at 02:24 PM.
08-27-2015, 02:21 PM
#128
08-27-2015, 02:25 PM
#129
Race Director
Right, but even then, what if a cylinder was out of round from the factory and the rings let fuel into the oil, spin a bearing and let a rod go. F/I engines are a whole 'nother animal when pushed. Could go lean in one cylinder, computer thinks the air fuel is still good, boom - spit the rod out in a million pieces. I've been there, done that. Ain't fun.
08-27-2015, 02:32 PM
#130
Le Mans Master
Did the car blow up? Yes
Are there people (more than one) praising the engine that just blew up? Yes
So my question is WHY? I didn't say anything negative about the car at all, so why are you so intent on trying to argue about it? Do you ever contribute anything meaningful to any discussion, or do you just like to stir the pot?
08-27-2015, 03:05 PM
#131
Team Owner
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You guys are one more negative post away from getting banned and this post deleted.....
08-27-2015, 03:22 PM
#132
Drifting
08-27-2015, 03:32 PM
#133
Do you have a problem with reading comprehension? I've said repeatedly that the number is closer to 1 in 100 than 1 in 1000. If it wasn't closer to 1% then the GM spokesperson would have said 1 in 1000, 2 in 1000, or whatever number some on here seem to believe. We aren't talking about a few engine failures here , the actual number is probably in the range of 50-80 out of 9000 cars which isn't good IMO. If they said it was less than 5% would you say "see it is 1 in 1000 since that is certainly less than 5%"
He wants proof that you are really telling the truth or he won't believe it
Where are the Google links and math charts to back this up
He wants proof that you are really telling the truth or he won't believe it
Where are the Google links and math charts to back this up
Stop with your silly childish BS.
He called you on your assertion (1 out of 100).
Rather than attack him and others just show us the data your claims are based on? That should be simple enough.
Or just admit you screwed up and meant to say 1 in 1000 which we all know is closer to the truth and move on.
08-27-2015, 03:57 PM
#134
I wish I could filter this thread to only see the posts from 1320n12 and Pzoom00, plus the 2-3 other relevant / useful posts. Please let them post a follow-up once they hear back from GM.
08-27-2015, 04:08 PM
#135
1. No one claimed the viscosity of the oil had anything to do with this engine coming apart. Every respected oil manufacture makes a heavier weight oil for additional protection for high heat and constant revs where lighter viscosities tend to thin out. That's why 20W-50 was formulated. At high revs where bearing loading is high the last thing you want is crankshaft to piston rod metal to metal contact due to thin oil. HiPo engines have failed for no other reason than lack of viscosity at sustained rpm in high heat.
2. Oil contamination in an engine that turns thousands of RPM is an absolute reason for engine failure. It takes time but in HSOP engines that have high bearing loads contaminated oil will quickly destroy one.
Anyone anywhere versed in HSOP IC or turbine engines will tell you this.
Based on your post we know you are intelligent. So surely you know this as well?
So it begs the question what is your motive here?
08-27-2015, 04:17 PM
#136
To win an argument on the internet, like almost every other post in the past 5 pages.
Can you all just meet at the flagpole after school to settle this? A YouTube video of that would be much better than the rest of us having to trudge through this thread for relevant info.
Can you all just meet at the flagpole after school to settle this? A YouTube video of that would be much better than the rest of us having to trudge through this thread for relevant info.
08-27-2015, 04:19 PM
#137
Please do ban some of the constant trolls because I (and I am sure others) are very weary of having to cut through the same repetitive negative BS to glean useful information from these threads. Even keeping my ignore list updated doesn't help that much because of the quoted text from those who have never added anything useful to a discussion in this section.
08-27-2015, 08:51 PM
#138
Safety Car
Hey I'm bullet proof!!! I've changed mine 3 times in 1800 miles!!! At 500....before track day last Monday at Mid Ohio and back to stock oil last night!!!! I hope I don't jinx myself.
Can anyone guess at the downside of driving with the 15W 50 racing oil on the street? Since I drive to the track I always have a few days of street use OK maybe a week on each side where I drive with the heavier oil?
I understand all the perceived bashing comments and those who think their toes are being stepped on. Bottom line for me is this is the most expensive car GM produces and we should not even be having these discussions. I know nothing is 100%. BUT if I were running GM I would have called each and every owner, sent them a certified letter...what ever and informed them of this 500 mile oil change deal. COMMUNICATE!!!!
To me they have not learned from the cavalier key problem that stinkin Congress had to have hearing on. An engine exploding on a track could be catastrophic.
They have my email address are always sending me marketing Emails......... get stinkin OnStar crap all the time......... why not say Dear Greg, you need to get you oil changed ASAP. We know we cut the free oil changes from 4 to 2 but ya know what this one is on us!! Come on in!!! So simple but they don't get it.
Can anyone guess at the downside of driving with the 15W 50 racing oil on the street? Since I drive to the track I always have a few days of street use OK maybe a week on each side where I drive with the heavier oil?
I understand all the perceived bashing comments and those who think their toes are being stepped on. Bottom line for me is this is the most expensive car GM produces and we should not even be having these discussions. I know nothing is 100%. BUT if I were running GM I would have called each and every owner, sent them a certified letter...what ever and informed them of this 500 mile oil change deal. COMMUNICATE!!!!
To me they have not learned from the cavalier key problem that stinkin Congress had to have hearing on. An engine exploding on a track could be catastrophic.
They have my email address are always sending me marketing Emails......... get stinkin OnStar crap all the time......... why not say Dear Greg, you need to get you oil changed ASAP. We know we cut the free oil changes from 4 to 2 but ya know what this one is on us!! Come on in!!! So simple but they don't get it.
08-27-2015, 09:23 PM
#139
Melting Slicks
No one noticed that GM is handling the situation appropriately? Sht happens. It sucks but if GM backs it up then move on.
08-27-2015, 09:50 PM
#140
Race Director
The 2015 car is one of the best cars I have ever driven and tracked Period.
I throughly enjoy lapping people at the track in it.
That's why I was so shocked as to how this car broke and caught fire.
GM is making the situation right though with no problems and that's what really matters
I throughly enjoy lapping people at the track in it.
That's why I was so shocked as to how this car broke and caught fire.
GM is making the situation right though with no problems and that's what really matters
good point, Ed...