Why are Chev LT4 Engines Failing??

[csv8]

"When announced, the LT4 sounded like it was the Chevy motor to end all Chevy motors. It had 650 horsepower, 650 lb-ft of torque, and sounded like an angry thunder god exploding in the night as you pushed harder and harder on the accelerator. However, that’s not exactly what we got when the LT4 powered Z06 was finally released.

Instead of the blistering performance we were promised, the Z06 couldn’t really handle all that much of track use. The car would go into limp mode after only a few laps due to ineffective cooling. Chevy is currently hard at work attempting to figure out a fix for this, but until then, the Z06 just has to be babied until the engine cools off.

However, a more pressing issue is the fact that these LT4 motors keep letting go. The first one to destroy itself was within 841 miles of when the owner purchased it. This time though, the engine decided to commit Hari Cari on the track in the hands of a journalist. According to Gary Gastelu, the Z06 “unceremoniously called it quits” after just a few laps.

While Gastelu pointed out that this car was a press car, and journalists tend to thrash them, both Chevy and Gastelu remained stumped at what caused the LT4 engine to blowup. Chevy says it is still working on the issue, but hasn’t given out anything to postulate what could be happening.

So after this, are any of you new Z06 owners worried about this possibly happening to you? Are you babying your cars? Have you contacted Chevy? "
http://ls1tech.com/articles/why-are-...zergnet_658462

[mik]

Sounds a bit mysterious doesn't it, by the same token you can break anything if you try hard enough.

[Ford_The_Win]

"I got's two words for y'all - Chev rolet"

[Road_Warrior]

Originally Posted by mik

Sounds a bit mysterious doesn't it, by the same token you can break anything if you try hard enough.

But you'd think in a car like this, they'd cane its ring off during durability testing (i.e. the thrashing to end all thrashings) being a top of the tree performance car.

It's what Ford did with the Ecoboost V6 before it was used in the F-150, not for performance, but to prove its durability to sceptical V8 buyers.

[Express]

We all know there will be some failures where mechanicals are involved so it would be of interest to know how many engines have failed compared to how many sold to give a more actuate picture of the problem.

[SensationFG8]

Because they have a Chev badge on them, the block cant handle the extra power that provides

[mik]

It appears to be two engines so far unless i read it wrong,

put it to perspective .
Hyundai US may have to replace 4xx,000 engines due to a manufacturing problem.

http://www.cnbc.com/2015/09/25/hyund...e-problem.html

[OzJavelin]

Maybe if they turn off the emissions controls it will all be fine?

[Yellow_Festiva]

Originally Posted by mik

It appears to be two engines so far unless i read it wrong,

put it to perspective .
Hyundai US may have to replace 4xx,000 engines due to a manufacturing problem.

http://www.cnbc.com/2015/09/25/hyund...e-problem.html

Owch!... Isn't that the same as our i45? My sister has one. I wonder if she will hear anything about this?

[HO 3]

................gunna have to stop making em out of recycled, recalled VWs


Cheers Mick

[mik]

Originally Posted by Yellow_Festiva

Owch!... Isn't that the same as our i45? My sister has one. I wonder if she will hear anything about this?

i believe its a problem with us made models, your sis should be ok i think.

[MethodX]

Shame, hope they rectify it.

[XRFutura]

Motor trend had a motor issue with the z06 during their drivers car of the year award. It lost boost and was misfiring and overheating.

[XD 351 Ute]

They're probably the engines meant for the 2018 V8 Commodore that's been canned, a-la VT oil burners....

Ed