The LT6 Tick .. Could this spell Disaster for C8 Z06 owners?
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- Опубликовано: 15 сен 2024
- I give you my thoughts on a recent article that was put out on Corvette Blogger regarding a peculiar ticking sound coming from the top of the LT6 engine found in the brand new 2023 Corvette Z06. This high output, high revving monster is the most powerful naturally aspirated V8 ever put in a production car but is there a hidden issue that no one saw coming? Does this sound spell disaster for Z06 owners or is this normal?
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Getting that much power out of an N/A V8 engine should always make you wonder how long until it gives you problems.
Most people aren't used to hearing solid lifter valve trains, I'm a little older and have run them in the past, normally have a little of that ticking going on....my Z06 has 500 miles on it and ticks at idle. I'm doing first oil change now, then again at 1000 miles. I'm sending oil out to be checked. I won't run hard until I'm over 1000 miles. We'll see what happens but I'm not worried at all. Engine was built by Kaleb Dudley, so if anything happens I'm going to go looking for him lol... peace
You're right on the money. My last two Corvettes had solid lifters; I'd mention the years; however, it was before most on the site were born, including RacerX, solid lifters tick, period.
As a Shelby GT350 owner. Here is some advice. Warm it up to temperature before you beat on it. Check the oil often. Make sure you put the proper oil. And extend that warranty.
Extending the warranty is great advice. Buy it from a dealer in a state that has no sales tax.
@@thereissomecoolstuff I called Ford and purchased mine directly from them. They have a Ford warranty department $2500. Covers everything. Starts after the manufacturer warranty ends. I saw the price of that Voodoo engine and said it's definitely worth 2500 bucks.
unfortunately i believe gm doesnt have extended warranties, only 3rd party
For those that don’t know good temperature to raise to before you beat on your car , would be trans temp around 145-170 and oil temp 190-200
@@1470boyz & for god's sake make sure you have proper oil pressure, there is a purpose for aftermarket guages.
The ONLY click/tick noise should be from healthy fuel injectors firing, and I’m not hearing that. Everything else is indicative of an accelerated wear condition, which, on a newer engine, is evidence that something is going to fail much, much too early.
That’s a sound I’d never live with out of warranty
Sounds like metal slapping metal to me. If it's a sound that was there from the get go, then that's possibly normal. If it started to develop, then that is obviously not normal. Only time will tell. Once engines start malfunctioning/throwing check engine codes, then it's time to investigate! Great video, Racer X!
That is what I was thinking Sovereign Knight. 🤔
Good to know it’s not just us Hemi ticks 😂
They're gonna say oh its supposed to sound like that 🤦🏾♂️
1# PR rule : Deny
@@AceCyberstarGaming exactly they be like "noise? What noise?" 😅🤣🤦🏾♂️
Lmfao facts just like dodge does concerning the hemi tick…these money hungry pigs don’t wanna take accountability for anything
Like Jim Carey Liar Liar.. "Oh that scratch? It was like that when it came in here." 🤦♂️🤬
Like they say never buy the 2st yr of something new on a vehicle especially engine or transmission wise
As far as HEMI tick. My 2009 5.7 6-speed manual has never had it. Might be that it’s non msd? I don’t know. But it has 206,000 miles on it and the engine has never been opened. I have the original clutch. The cel has never came on. From day one I ran Royal Purple. So that too might be a plus too. And yes… I have beat on it. I don’t know how many broad ways second gear tire screechers I have done. Too many to count. I ran it at ZMax in Concord NC many times. Best time was 13.4 at 106 mph. It’s on RUclips video. So yeah. Not too sure about why certain HEMI’s have the tick. By the way, I’m 64 years old. And a grandfather of four. I just never grew up about cars😛
Have an 09 with 300k. Never been apart. No tick.
It’s race technology, that should be left at the racetrack. It’s a great idea in theory, but why copy Ferrari, at the price they are selling them at, after the Stealership Corvette Tax, you are looking at Ferrari Price anyways, just go buy one, they do it better then anyone else. The C8 is an amazing car in Stingray form. Great American Style V8 that gets it done and at a base price most Americans can afford or stretch to afford if they really wanted one. I don’t know who Detroit is building cars for anymore!?!?!? The majority of America cannot afford them. Even a Mustang 5.0 is over 50k nicely equipped. If these companies would get their head out of their asses and go back in history and follow the Teachings of Lee Iacocca, they could come up with a set of cheaper, fun vehicles for the masses and they would sell all they could build. 20 years ago you could buy a brand new full size well appointed truck or daily vehicle and a fun car like a Mustang, F Body or even a C5 they were 39k base price! Yet they make billions and offer 15k profit sharing and how many billions in upper management bonuses. They have no vision anymore, they are not car people, they are degree holders!!! People want fun cars and trucks they can afford, where’s the C8 SS with a 2.7 High Output truck engine making 380hp priced at 45k that normal avg people can buy. It would be perfect!!! Most guys take them for ice cream and their kids and grand kids for rides in them and out for occasional drives anyways. Not everyone needs a Nuremberg-ring ready car to drive down the street at 45mph. Very few are actually being used as designed. And most will never be. Build Cars and Trucks America Can Afford. They are all guilty of it… it’s not just GM. Ford and Stellantis is doing the same things..
Well said, I don't see this getting better in the future unfortunately.
From the history of the GT350 this was pretty much to be expected.
With how GM handled the LS7, I am sure they will do nothing about it. Cheaper for them to ride the issue out.
^this
Yeap
What happened to the LS7? What vehicles are equipped with this engine
@@Bank_Da_Bread C6 Z06/Gen 5 Z/28. Catastrophic valve guide wear
@@camaro3gen thank you for replying
2003 & 2004 SVT Cobra engines had a "tick" issue that was initially worrisome. This noise seems much louder, definitely valve-train related.
Great video RacerX! I would first quickly go to the dealership to have at least the problem being documented early in the process, for warranty and legal reasons, just in case. By history a tick sound is never a good sign, but lets be positive and lets assume that GM did their homework.
I hope so buddy 👍
First the Carbon Fiber wheels that nobody can or will mount tires on now this
This is what happens when race car parts are put in street cars. The Z06 is literally a race car with a VIN. If one doesn’t respect the machinery and babysit it like a newborn, you will have problems.
Any tick or grinding,clunking sound on a new engine cant be a good thing!
GM + Cheap Chinese Parts = higher profits divide that by customer loss & then it equals bankruptcy again
Had the tic on my 2012 Ram and had to spend like 4k for it to be rebuilt on the top end..It happened around 130k miles....Now I was told if you change the oil every 5k miles no more it will prevent this...I am doing this on my 2021 TRX so I don't have this happen...
I wonder if due to the specification of the engine it’s causing issues in production. Part of me thinks that’s just how the engine sounds but it really should be super smooth with this engine having zero gaps or anything. I forgot what it is but I think the z06 engine has zero margin for error and even .0001 mm off and something will go wrong but I think that’s what allowed them to produce so much power cuz it’s a well built balanced engine. It just seems like Chevy is trying too complex of an engine for the factory to assemble with the strict strict tolerances. I believe things this thing does like an 11.5-12.5 compression ratio so it can’t be half assed together or these things happen.
This was being discussed on another forum. Then they shut down the tread. I’m sure GM didn’t want much publicity about a future problem. It’s not being covered anymore. This video doesn’t add much that hasn’t been covered on that forum. The forum seems to be a marketing arm and hype platform for GM. Buyer beware is always the best policy. I personally think the regular C8:is the best car for the street. If you want a track car be prepared to spend the cash maintaining it .
It's Chevy's version of the typewriter tick the Mustang has😂
This motor have self adjustable valves every second it makes necessary changes. It can’t be boosted or turned because it at the peak of limits. Really shouldn’t be changing the exhaust because of the pressure of the engine. Unless you want to blow up. GT 350 was like that for the 2015 to 2017. Burning oil and blowing piston in 6 or 8 cylinder. 2018 Ford had fixed the problem.
My Acura makes the same tick. Sounds just like that. Someone told me it's the fuel injector making that ticking noise. But I think it's a normal sound for overhead cam engines. Just have to stay on top of the valve lash adjustments.
Same with me I have a 20 tlx with the V6 and mines make a ticking sound after I get off the highway.
It sounds 'frickin awesome from behind when its revved. Sounds like a sewing machine w/ the 'hood up. Tick tick tick, tick, tick...
Sounds like a duramax
Did somebody do a diesel motor swap😂😂 the 1 Ive heard sure did!!
What’s the latest with the LT6 ticking noise? Is it still being investigated? Or have they found a fix for it? Is it just on a small % of LT6 or do most of them have the engine problem? A friend’s allocation is coming up and I am worried since it’s way over his budget and if he gets the ticking problem then it would be a disaster for him. Should I tell him to wait a few months to see how GM handles the problem or? Thanks for your help.
All these people buying cars "way over their budget" like you say are gonna be in for a rough surprise when the recession truly kicks in and companies start layoffs. Even if a recession doesn't happen, inflation will keep increasing all the other costs besides their car payment such as insurance, oil changes, and maintenance stuff (or potential repairs) and eventually they will be forced to sell the car for a loss in the future making it even worse for themselves.
There's a service bulletin out and a fix. It's only a small percentage of cars. The cam caps have to be retorqed
@@c8miamicarclub If one has it is it no big deal or a big problem
@okaythen001 gm seems to think its not a big deal. I think it is. Just get it documented and fixed.
The cam lobes ride directly on the valve stems. Where would a lifter be?
Pretty much like other GM LS engines, the 5.3 has a known tick issue, and the disasterous LS7 issues. I'm sure GM won't do anything about it per past response.
Sounds like the age old piston slap that Corvette's have had since the C4.
My Z06 had that same sound since 74 miles and now the new issue gas in the oil .You will see the oil level rise, then when you smell the dip stck it has a strong odor of fuel. I have 2 other friends that own Zs that have had to drop off the cars for the same issue. The strange part of all this is that they did'nt have any ticking noise at all.
Use gasstation that uses toptier only.
It sounds like an old Chevy taxi cab with high mileage.
There’s a service bulletin for that noise to adjust the camshaft caps
Sounds exactly like the hemi tick.
That rev definitely soundd like a racecar and not ur typical street v8
100% i heard one in person at the beach here in Florida i swore it was a Ferrari, Turned around and it was a red Vette.
You took my comment, right out of my mouth.😂 I couldn’t agree more when you pretty much said time will tell.
sure it will shirley for sure
That sounds like more than a minor issue, something just isn't right and the GM engine design engineers should evaluate it and drill down to isolate the problem then make whatever changes are necessary. The fix should effect all current engines and be incorporated into the subsequent builds.
This sounds like the right thing to do so GM will do the opposite.
This problem is not dedicated just to the 5.5 my Stingray 6.2 also had the same noise..took it to the dealership..it took3 months and 2 days. But motor was changed out..the could not find out what was going on..and like u said no engine codes no performance issues just that annoying sound for a car over 100k..can't do it..new motor has a little ticking noise but goes away after car warms up..
cars today are too complex with too many points of possible failure, and its only going to get worse.
To me that sounded like something loose in the valvetrain, do they need to adjust the valvetrain after break in on these?
I thought thar was a honda thing..
I'd sell that thing ASAP and let someone else along with GM find out the consequences of that KNOCKING sound! That's a knocking sound bro and a lot more serious than just a ticking noise!!!
Well said, even the infamous Coyote tick doesn't sound that bad.
The Corvette C8 Z06 is more than just a car; it's a symphony on wheels. With its naturally aspirated 5.5-liter V8 flat-plane crank, every press of the accelerator unleashes a melody of pure power. At 670 horsepower, this masterpiece sings like no other, resonating through the soul of every driver who dares to experience its raw, untamed potential. Each note from the exhaust is a reminder that the Corvette C8 Z06 is not just about speed-it's about the art of performance, where engineering and passion collide in perfect harmony.
Sounds like a diesel engine 😂 Everyone who buys it better get a couple of extended warranties.
They don't have for z06 extended warranty
That noise would bother me too much … I’m sure GM will figure it out, and take care of it.. I would hesitate to mod the Motor and computer until the issue is repaired.. always great videos, you and demonology have the best, straight up info… 👍🏻😎🇺🇸
All these Flat Plane Crank engines have reliability issues. The Voodoo from the GT350 is unreliable, and the LT6 will be no different. Ford learned the hard way, took out the FPC crankshaft, and created the Predator. It remains to be seem how GM plans to handle this since it is a bespoke engine for the Z06.
I don’t know about the Voodoo being unreliable.. Mine is flawless. Just like the Voodoo. The Z06 will have growing pains. First year or two to work out the bugs.
@@RichGT350r You probably have one of the few good ones. There have been a lot of Voodoo failures and replacements reported. This never happened with the Predator. In fact, Ford Racing took out the FPC crankshaft from their motors after just one year of usage. The failure rate and cost was just too high for Ford Racing.
@@ClickbaitMotorsports I heard about most of the failures. And from what I can tell.. The owners never read the Owner’s Supplement about how to care for the engine. As we both know, this is not a run of the mill engine. There are certain things you have to do and it’s all spelled out very clearly. Maybe I was lucky, however. I did follow the supplement to the letter. No cold high rev’s and don’t get into it until the oil temp hits 180. I think the 5.5 will be a great engine. Just some growing pains and get the owners on board that this is a Race Engine. Thank you for your reply! I like constructive dialog! Be well! Best Regards, Rich
Is the predator in the gt500?
@@717Chris Yes Chris. The Predator is in the GT500 same block.. lower compression, different internals. Cross Plane Crank.
I think this is more of a flat plane crank issue. Ferrari said anythig over 5.0 liters in a flat plane crank and it wanted to shake itself loose. Ford had the issue with 5.2 and i can see gm having even more issues with the lt6.
I've heard similar ticking sounds in Ford's Triton "modular" truck engines, as well as the Mopar Hemis in the cars and trucks. I've also heard it in Toyota Tundra truck V8's. It may be something that needs watching.
Welcome to the modular engine world. Tight tolerances and low idle rpm (lower oil pressure at idle) = the "tick" ask FORD. Just about every 5.0 out there has it, mine did as well. Tune with idle rpm at 7500rpm, Ceretec treatment and Penzoil Ultra Platnium = tick gone.
This is an engine that most Americans are not used to seeing on American cars as a V8. Dual overhead cams with no lifters. Instead, splid cam seats that are in direct contact with the cam lobes. 4 cams on top with dual springs, and 4 valves per cylinder Vs. 1 cam down below the engine compartment with 2 valves per cylinder . This engine is going to make more noise than a typ. Push rod engine. Also, the valvetrains are much better lubricated than the c8 LT-2 engine due to high reving on the z06, LT-6. It's normal for a v8 Dual o.h. cam engine that has a lot more moving parts on top. Not to mention the cam drive chains.
However, lubrication might be an issue. I currently have a c8. On my second oil change, I used a Purolator oil filter with a punched metal inner core as opposed to a GM oil filter with a more free flowing plastic inner core. With a Purolator, I was hearing a little more engine valvetrain noise. The 3rd. Oil change with a GM oil filter that has a plastic inner core that was providing better oil flow from the filter has eliminated the valvetrain noise. If this engine is using an aftermarket oil filter, I would go back to the oem filter. On this engine, oil starvation is a major issue. Especially with high revs and more moving parts than a typical push rod engine like the c8.
Sounds like a diesel. Crazy. I turned down 3 allocations for a Z06 and waiting for the 2024. Not buying a ticking time bomb for $150K. On the msrp list for 3 plus years. The noise would drive me insane. Just so wrong. They know what it is. Lawyers won’t let the engineers fix it. Same old crap.
some of this could have been avoided if Chevrolet had not spent all the money on a mid-engine design in the first damn place
I expect nothing less from GM in 2023.
Sounds terrible. I’m not a real fan of Corvettes. Maybe the LS6 got a case of the Hemi’s😂 great vid man🤜🤘
Valve adjustment too loose?
My first thoughts were that it reminded me of the piston slap from the old ls1s that I remember hearing about in the forums.
I would immediately change the oil and send an old oil sample out for testing to see if it's out of spec and check for any metal in the oil. Also, I would use a stethoscope to see if the ticking is in a specific location or a specific lifter. Finally I would check compression on each cylinder. These are all basic things that a decent mechanic can do and it's where they should start. I've done detailed research on this engine and it's hand built and natural aspirated and overall a beautiful piece of work. But like any engine if it's either mistreated or the assembler had a bad day something can go wrong. I don't foresee the specific engine as a time bomb.
With 5 out of the 7 oil pumps in this motor being scavenging pumps who knows what going on inside that motor
We will have to see. It could be an issue like Hemi tick or it could be a non issue like Coyote tick. The real proof will be seeing these engines get up in Miles’s
Wont kno the issue til down the road with some good miles in the engine, but i think it could be a problem possibly especially being a new engine.
one last comment on it. the (tic) at least in the vid isn't steady.... tic tic tic, nothing... tic tic. guaranteed its fine when you rev it up just a touch. get more oil pumping over the solid lifters. is it detrimental? over time maybe.. i have a 1995 taurus sho with solid lifters. and it does not make this noise. but the valves are adjusted properly :D
Ya,but you can adjust the valve train,this engine you can’t !! That may be the problem. Oh, and I think a GT350 sounds better not quite so girlishly high noted.
@@arendbehrens2761 noted. I'm not familiar with this new engine. and i agree. its weird to here that noise come from a corvette. i wouldn't call it girly. it sounds crazy for an American v8. almost like 2 crotch rockets humping each other. :D i do prefer the traditional v8 growl though.
I think they need to find out what that sound is.
Lemme guess, nobody thought in engineering that maybe some hydraulic lash adjusters would be a cool thing. Ferrari did it, why not Chevroolay?
What do they do?
Them there ain’t ticks….
Them there are ticking time bombs!
Yes, I’m quite concerned for the ticking, sounds like a valve train and lifter issue. One fix I hear requires pulling the engine if it’s on one side vs the other which can be fixed without much trouble.
Is there still anyway you’re still interested in a C8? I know your issue of getting burned on the ADM or Charitable Giving that was pulled on you on at least 2 vehicles; the C8 and a Truck I believe.
Is Erebus faster than a Hornet?
I’m in line, a long long line, a waiting list that began at 1,673 in November 2021 to 1,351 as of 7/18/2023 for a ZO6 @ MSRP.
I’m 1,351 at the “Big” Dealership and #4 in line at my little dealership where I got my 2022 C8 at MSRP.
I’m quite happy with my 2022 C8 HTC, but concern keeps growing over the issues with the ZO6.
The whole C8 run has been one thing after another.
Racer, are you aware there appears to be delays in delivery now?
Another RUclipsr has his car built and it is sitting in a lot waiting for an Autorack to take it to the dealership for this person to receive it. It could be weeks he’s been told.
The thing about owning a ZO6 in my area is that our weather in PA makes typically for a 6 month driving season. And, I probably will only put on about 1000 miles per year.
I’m certainly considering the need for an Extended Warranty for the C8 ZO6!
That’s if I ever get one.
Allocations for ZO6s are hard to get!
My Salesperson told me there’s a Program that requires a dealership to sell X number of 3LTs then between the entire Sales District, GM decides how many allocations go out to the various locations.
Sgt. Schultz would say: “Very Interesting”
Well, to the consumer, it’s very frustrating!
I wonder how C8 reliability will be long term.
They always say there is no problem.
Awesome content buddy 👍💪
🏆Racer X 🏆🍀got R done 😎✌️
Hopefully Jason from @EngineeringExplained makes a video explaining this.
he's a sellout shill these days
what about the mustang tick and 2k rattle?
That sounds brutal.
Clattering. Valve train. Cam drive. Or floated a valve, hit the piston and now out of spec on clearances. Sounds like my 93 Cobra when I shifted to 3rd instead of fifth and broke a valve spring. Car still ran. Had to use an air compressor and change the broken spring with cylinder pressurized. It was just two months old. Not home serviceable in this car I believe.
My LS 1 tic goes away shortly after starting. Just a lifter needing to fill with oil. 230,000 miles and still going strong 💪
To me, that sounds like piston slap. Maybe let the car warm up and see if that changes.
Cam chain tensioner?
Tickin' time "bomb" in repairs!
The coyote engine has a tick to it also.🤷
Hey brother my Zo6 makes that same noise since 74 miles on the Odometer. Dealer said GM is investigating the issue and will put up a bulletin once a fix has been found.
My C7 grand sport had the same tick, but not as loud. It is the high pressure fuel pump. It will get quieter and quieter with mileage. My tick is completely gone.
The recording sounds like an old beater And I'm talking Kitchenaid.
The C8 Zo6 was reverse engineered from a Ferrari F458 which is why it doesn't sound like the typical American V8. It might end up being a massive recall but being GM it's going to take a while before they do recall them.
I have the Ferrari F136 Engine. It doesn’t have that engine slap sound.
I doubt GM will do a massive recall. They will probably just blame it on the customers
I must say that Z06 sounds like the Mach 5. Would be great with a traditional manual transmission.
Damn. You're getting close to 200k
If it’s just on startup, it might be the same issue as the m156 on the e63. The camshaft adjuster wears down and makes a tick till it gets oil pressure
Doesn’t affect the car whatsoever. Just hella annoying
In addition to my hellcat, I have an E63S. It does make a similar noise but not just on startup.
So the engines are handbilt and signed. It would be interesting to see if certain individual engine builders are responsible or if it’s across the board. Also if the engines were built before or after lunch or on Fridays.
I really don't buy this "handbuilt by one man" bs stuff. Mercedes does it too and I think it's just mostly marketing.
@@EricZAchille Except they show the 1 man/person building them. They build 3-4 a day. As crazy as corvette owners are I’m surprised they aren’t logging which engine builder is having the toughest time.
well if its a solid tappit then they are not shimmed right nothing should tic. like that.
Sound like timing chains problem
For the price plus the outrageous markup my engine sounding like that you're putting a new engine in that bay. If GM isn't going to issue a recall/repair bulletin and hope to pass it on to customers when the warranty expires get rid of it now or file a lemon law lawsuit. I know MB pulled this stunt with the first generation M156 6.3 AMG motor that had a headbolt failure issue which resulted in a class action lawsuit because they knew about the problem and didn't issue a recall but would replace the engine if it failed during the warranty period. After that you were on the hook for a 20k + engine, they didn't correct the issue until the 2010 thru 2013 model year whic was the last year for that motor.
My LT1 has ticked since day 1. Sounds like a Meissner sewing machine. They say it's HPFP smh
I told people the valve train is going to be its weakness.
Sounds like lifter or chain guide.
Dual over head cam lifters can still fall and in fact I do see it often as I am a tech for a dodge dealership. The 3.6l v6 has the problem all the time. You don’t really hear any ticking from it but they do fail so I can believe it. Or I also can believe that it could just be really loud injectors but I don’t believe that is the case here
What is the most reliable dodge engine? The 6.4 in the Scat?
@@EricZAchille from the few years I’ve been working on dodge cars I haven’t really seen to many issues with the 6.4 or the 6.2. I have only seen maybe 3-4 6.4l that came in with lifter failure over the past 3 years. I would say that there a lot more reliable.
High pressure fuel pump driven off a camshaft? (like Ford and a host of other engines these days)
Well, in typical GM fashion they've put showing out first over quality, but calling this a "tick" is putting it lightly(wrongly,) lol. That's a HELLUVA racket, not would call a tick exactly.
That tick sounds expensive
Ooohh. I would be sooo mad. Paid all that money for my dream car and then it does that!!! Total disappointment!!!!! You want that kinda car and that much ,money to run flawlessly.
Time will reveal all let's just stay tuned in
A solid lifter engine tends to make more noise than a hydraulic lifter, which has been the standard for decades. Should we re-tune our ears? The LT6 being a brand new design, only time will tell if it’s a terminal design flaw, hopefully not.
I just traded in my 2020 Corvette because it's got that lifter problem. or we'll have one later. So I got. this car, the new Z.O6 So I wouldn't have that problem later. But it looks like I might still have that problem. From what you're saying,
I doubt it Racerx. From Car Enthusiast Lawyer