Move the V emblem from the door to the fender where it belongs. Make the CTS embelm say CTS-V,(I know there's a V embelm on the other side of the trunk). I'd rather see the hood vented rather than the cheesy stamped vents. I see so many people putting fake Buick like vents on everything it's sickening.
Just wondering if that's a Corsa exhaust?
A guy on another forum I am on actually builds pistons and he did extensive testing with hyper pistons and the results were not favorable. Anything over 6 psi netted BOOM and that was with 8.0:1 compression, although that was an iron block.
Not to say that they couldn't be made stronger by forging but the cast hyper-T's should be fine. I really don't see why so many people are getting so freaked out about this. You know how many cars have these pistons? More have them than don't. They're VERY commonly used these days. I really think the LAST thing you should be concerned about in this car is the engine.
Thought this was cute. I picked it up on a site that apparently has some piston manufacturers on it:
"...I think hypereutectic pistons got a bad name for the same reason that EFI did when it first came out.
A bunch of beer drinkin' old timers were sitting around sayin' "Why can't they just leave stuff alone? All this new stuff is confusing us. If it's confusing us, then it must be bad. So let's tell everyone how bad the new stuff is..."
Excuse me WHAT???
I expect ring land issues to arise after some miles have been put on them.
But I would love to be wrong.
Source link or it didn't happen. This is how rumors get started.Originally Posted by d3mark
Rest in Peace, J.D. (aka Dirt_Cheap_Fleetwood)
So somebody break it down for me. As an "old timer" I'm use to forged crank, rods, pistons being the strongest period. So what was the reason GM chose hypereutectic pistons? I understand that these cast pistons have more silicon, have reduced wear, minimal expansion and allow for the compression ring to move farther up the piston. Thus you can have a lighter, shorter piston reducing reciprocating weight and allowing for a faster rev-ing engine. The downside is detonation, which a cast piston will not tolerate for long.
The forged piston has expansion issues, which could make for a noisy engine when started cold. They are also heavier, more expensive, etc. So it the bottom line cost? Is the issue that a modern V8 with a stock PCM shouldn't be allowing detonation of any kind anyway so forged internals are overkill? I gotta know GM, I gotta know!
Pure guess here but NVH? We all love the lope and rough idle of a Z06 engine, but there are those who think it is unrefined.
A hypereutectic piston can be either cast or forged. People are bashing GM and they aren't even sure about the technologies involved. Check out the link I posted earlier in this thread. It's very informative on the subject.