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  1. E

    For the guys who think deactivating the mds via a tune is a good idea

    Here is one data point. My 2014 6.4 at 90k miles had only one significantly worn roller and cam lobe. That one was *not* an MDS lifter. Some other lobes had 'skid marks' on them but there was not a clear correlation between them and which ones have MDS. All the rollers felt smooth rolling...
  2. E

    2014 2500 6.4 what to look for

    Clean one owner no rust is some good boxes to tick. Yes the 6.4 can get the hemi tick. But if it's not ticking now I'd stay up on the oil changes with the specific required oil and not worry about it.
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    What did you do with your 4th Gen this week?

    And here is the broken intake valve spring that started the whole mess. Really the winch was kind of a treat for myself, in thanks for getting through this big job.
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    What did you do with your 4th Gen this week?

    I installed a 12k winch on a Vice Design hidden winch mount. So far I really like it, the winch is protected behind the bumper and the weight of it isn't so far forward. While I was at it, I did a few other things :) - painted the bumper - installed LED high and low beams - Cam and lifters, oil...
  5. E

    Ram 5.7Hemi Coolant Flush DIY

    I took your advice and got the Mopar purple OAT stuff. I'll carry a jug in the truck on trips. And if I need more, Ram dealers are not exactly hard to find.
  6. E

    Ram 5.7Hemi Coolant Flush DIY

    Silly me, I read and trusted what was written on the bottle. :-( Specifically, last year when I installed the engine in my 2015 6.4 2500, I used the OAT coolant as recommended in the manual. All was well. But then I was chasing a minor leak while on a long trip and I topped off with Prestone...
  7. E

    How-To: 4th gen hemi cam installation

    Great write up! Thanks! Two minor suggestions: - the 21 ft lb torque spec is right for the M8 bolts that hold on the oil pump etc. But it is NOT correct for the M6 bolts that hold on the timing chain tensioner and guide. Those should be less. I'm guessing 108 in*lb or 9 ft*lb but I'm not...
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    6.4 broke down, need diagnosis help

    I'm getting ready to put it back together. Do the new head bolts get oil or no? I no longer trust the Haynes manual. The machine shop found bad guides on the exhaust side, and some of the intake valves were so worn in the seat area that they would have been too thin after cutting. So all new...
  9. E

    6.4 broke down, need diagnosis help

    I found a pitted lifter roller and a clearly bad cam lobe. The truck was only ticking a little but I want to do it all while I'm in there, this isn't a job I want to do again. The new Mopar cam and lifters are ordered. Plus a timing set and all the little bits and pieces. Heads are off to...
  10. E

    Hemi 5.7 MDS Lifter Test.

    I just replaced a set of lifters in a 6.4. Most of them look fine as far as I can tell, one was clearly bad. I'll direct message you, you can have them super cheap. Find one other person who will do the same, pick the best of them, and you have a set of Mopar lifters for not much $
  11. E

    6.4 cam and lifter set?

    Great! Thanks Benny!
  12. E

    6.4 cam and lifter set?

    Price and availibility on cam and lifter set please? 6.4 hemi in 2015 Ram 2500, stock, MDS. ekauppi7 at gmail dot com Thanks!
  13. E

    6.4 broke down, need diagnosis help

    There is a good machine shop here, I've taken many things to them and been pleased. They have a big backlog now so they're not hungry for work at all. I think they'll be honest and only do what is really needed.
  14. E

    6.4 broke down, need diagnosis help

    Thanks for the advice. I'll pull the lifters and take a look, at least.
  15. E

    6.4 broke down, need diagnosis help

    At 80k miles I'm leaning towards taking the other head off too and sending both to the machine shop, as opposed to DIY it all. But I'll leave the bottom end alone.
  16. E

    6.4 broke down, need diagnosis help

    Once you take off the front of the truck engine access is very good. Here is the root of the problem, a broken valve spring. And I'm lucky, the piston was just barely kissed. So I'll replace the valve and a set of valve springs. Would you use MOPAR 68080909AB springs or something else...
  17. E

    6.4 broke down, need diagnosis help

    Yeah I get that. I'm trying to decide if I pull one head in the truck, or do I take the motor out of the truck and do it all. I don't yet know why that valve is bent. If the timing is off it seems like I should pull the motor and go through all the valves and whatever else.
  18. E

    6.4 broke down, need diagnosis help

    How do I check the cam timing without removing the timing cover? Would it throw a P0016 code if the cam was out of time? I could check it by looking at cam and crank sensor signals with an oscilloscope, if somebody could advise me what it ought to look like.
  19. E

    6.4 broke down, need diagnosis help

    Is there any way to diagnose cam timing issues other than by taking the front cover off and inspecting? Can you look at the cam and crank signals with an oscilloscope, is there a procedure for that?
  20. E

    6.4 broke down, need diagnosis help

    Wouldn't a skipped cam chain result in bending exhaust valves not intake valves?
  21. E

    6.4 broke down, need diagnosis help

    Thanks for the advice. The cam is spinning, the engine runs but badly. Yes for sure I want to check cam timing, what is the easiest way to do that? Yeah tron67j, that's the big question. It's not easy to work on the engine in the truck, and I know how to pull it. It would probably take me...
  22. E

    6.4 broke down, need diagnosis help

    Ok, I got the truck and camper towed home yesterday, today working with a friend we have got the diagnosis started. Bent intake valve on #3 cylinder. Cylinder 3 had many more misfire counts than the others so we put a borescope down the spark plug hole and there it is. Of course there could be...
  23. E

    6.4 broke down, need diagnosis help

    Well that's an interesting idea I had not thought of! Thanks! Not common anymore in the USA but it could certainly cause bad running, and depending on what the contaminant is, even knocking. And it might not throw a useful code from the computer, how would it know? Hmmm... Back in the old...
  24. E

    6.4 broke down, need diagnosis help

    I have the MX+ OBD reader and Torque app. Would AlphaOBD give me more detail or not? I'd be happy to invest if it does. And yes I understand that diagnostic codes do not tell what part to replace, they are a starting point. At this point I do not know exactly what codes it is showing, the...
  25. E

    6.4 broke down, need diagnosis help

    Yup it doesn't sound like a quick fix. So I'll have the truck and camper towed home then dig into it. Do I remember correctly that I can't get the oil pan off without pulling the engine? I don't know that it's cranking faster than usual, I just meant it was cranking well. But yeah, check...

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