My truck's got only 10k mi so far even though its a 2015 6.4L. I'm just very paranoid reading things on the internet. Right now she's not ticking or anything and I'd like to keep it that way as long as possible. Your comment totally helps - helps me head in the right direction.
One thing about zinc though, I may be talking stupid but my logic is that if high zinc oil keeps factory non-roller flat lifters working normally for many many years, it should also keep a seized up roller lifter from chewing into the cam lobe, right? A seized up roller lifter is basically a flat lifter, No?
(Christ words to apologize for too many words sorry, I might need a life. I just dig my truck and y'all's)..............
I would think it possible that a seized roller could perform like its flat tappet cousin but it seems to be much worse than that. Imagery of failures show The lifter seems to turn about 90 degrees and the edge of the roller proceeds to cut into the cam lobe and cut hard.
Looked like the roller been running that way since day one but sound clips of the tick are extremely loud and nobody is driving that sound out of their driveway.
Not to say the milder sounds aren't a prelude to such erosion but as far as a "stage 4" failure event, you'll know it. And if any sound is a prelude to that disaster it's gotta be addressed. And no way an oil filter can protect the rest of the system from that kind of Carnage. The entire lobe center will be missing with the only the edges remaining. In the shape of u, like that of a sideways roller lifter.
With that bit of fear mongering on my part, I will add that so far this has largely been an early 5.7 but some numbers in most years. The 5 7 and 6.4 are similar enough that if FCA hasn't done anything the 6.4 numbers may start to climb. But not too bad yet. Im not sure how many millions of 5.7 engines are in operation but several. Ratio ehh not terrible, pretty low. It's Still not ok tho. Especially if it's your truck, ya know.
I've read guys that say their '12 (I think) was the most probable year to see lifter failure, and some say they fixed it in '16+ engines, now I read fixed in '18+ engines but that's all unsubstantiated. FCA mythology.
Also have to add that the forum is a place where solutions are sought, so problems are more concentrated within these hallowed walls. So maybe the odds are even better yet but that does nothing for those that have had the total pita problem. The failure is real and happens far to often, imo
FCA owes the repair but my wife owes me at least 15...well nevermind. But I'm sure to not get either one. (Unless I pay more....ha)
FCA claiming that were all just hearing sounds, or we don't know what an engine is supposed to sound like and so forth is just grating.
The best 'permanent' fix I'm aware of is to replace the lifters with those used in the Hellcat Hemi. Apparently the Hellcat lifters are produced with a more substantial needle bearings, and are not prone to seizing like ours. Since the Hellcat is a non-mds engine, best practice may be to do the 'mds delete' which entails capping or plugging the mds oil channels in the heads, changing the cam to a non mds unit and probably having the mds controls in the PCM shut off. I have NOT done mine yet, so with a grain here
Not all of that is necessary, maybe, I've read guys the that change only to a non-mds lifter and their engines are currently running very well.
I'm not saying it's the mds system causing the issue but as long as were here - to me that system is ******** and nothing more then smoke.
Another discussion entirely but MDS sayS that you and I are pushing some truck down the road (Ford), a perfectly flat road, no wind. And we are doing quite well. The fastest that particular truck (Ford) has ever gone. You and me pushing with 50% of everything we have, exactly 50%.
Maintaining 50mph, and then suddenly my ***** hurts, I decide f this and I stop. MDS says RAMyou can continue to maintain that speed all by your badass self with no additional effort.
********, Delusional ********
The truck will not keep the same speed unless the exact same amount of energy is applied as before. Which means now your badass self is pushing 100%. Not 50%, not 98 or 99%, but 100%. Mds is a lie and anyone who thinks those 4 cylinders are doing less work then the 8 cylinders needs to take a class in physics. The true laws of our universe.
Matter of fact I would argue those active 4 are now doing more work because the inactive 4 are nothing but dead weight along for the ride and they brought their friend 'friction' along.
Envision me on your back and I'm dragging my feet. MDS says that makes it easier for you,, so I wanna see you hit 55mph or I wanna see you hold 50mph longer or I'll settle for you only eating half that sammich. MDS says it's so.
Gawddamn joke. There I go, all elevated and **** again. Breathe, breathe......and bong hit, aah (I am in CO after all)lol, just kidding. Kinda
Disclaimer and public apology - I am sorry I use strong language, it's how I express myself best, Ramyou, I just used you and I as an example, I'm not saying you were an advocate of MDS, and I'm not saying that the ladies can't push that truck better than me, cause they can, that's why it was my 'gina that hurt, not theirs. So no offense only hugs and smiles (for the ladies, bong hits for the brothers, and absolutely the ladies can bong hit too, and toilet paper for everyone!!!)
Did I forget to mention how much I love my Wagon, she is the girl of my dreams, and if something happened to her, I'd go get me a nice shiny, no mods 2020, and start modn.
We all know Everything is not perfect, and my 392 ci Hemi is the baddest engine / truck combo I've ever owned. Fukd lifters and all. She is the **** and she's mine, and I'd marry her again!
Tapatalk wiped my sig but a couple basic Bolt-on's, tuned by wizard, 5.13 gears turning 37" MTs and she will flat eat **** up. Naturally aspirated, 3/4 ton 7600lb rolling menace, never meant to be a quarter mile pony but they come after me so I oblige. Very few want to try again.
She's not even close to maxed out either, ported heads, and a more aggressive cam will make a her a cannibal. It already takes a twin turbo'd deleted diesel to challenge (one did send me to corner to lick my balls recently, but only once, and it was turning like 32s and you could hear the massive turbo spool for miles, it spooled, I gapped it bad, then, then it all changed, halfway thru 2nd it gapped me by 4 lengths in one gear then it was even through 5th....any way, it was badass) not bragn, well a little, but my point is DO NOT give up on your 6.4L they are worth a lifter job. Mine is worth way more than that to me even. Super proud.
Sorry bout the long, distracted post. Keep loving what you bought, seriously, they are every bit as badass as y'all were thinking when you threw your hard earned dollars at it.
I'm not stopn with mine, Kings and springs come with those lifters? F yeah, all in!