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RAM 1500 HEMI TICK Explained (Revised) - The Cause And How To Protect Your Engine

Jun 01, 2021
What's happening today guys? My name is Alex and welcome back to the channel. Today we are reviewing the

hemi

tick

so I made a video about a year ago about the

hemi

tick

and I want to revisit this topic be

cause

I first felt that way. The video just wasn't good enough. I think I missed some points so this time I did a little research and I want to share with you what I found be

cause

I think some of the things I said in the first video are not 100% correct, that's why we are going to review this topic and , hopefully giving you some really good information about the hemi tick.
ram 1500 hemi tick explained revised   the cause and how to protect your engine
First of all, what is the hemi tick? And now there are two possibilities when it comes. for hemi tick, the first one isn't actually a mechanical problem, it's a leak in the exhaust manifold, it sounds very delicate, it usually happens on start up and lasts 30 seconds to a minute, and the really bad ones will just tick continuously , what happens is that the bolts on the back of any of the manifolds tend to break, especially on the ram shafts, for whatever reason, and that causes a very annoying sound, but it's not the hemi-tick of what What we are talking about is the failure of the semi-lifter.
ram 1500 hemi tick explained revised   the cause and how to protect your engine

More Interesting Facts About,

ram 1500 hemi tick explained revised the cause and how to protect your engine...

What happens is that the elevator roller needle bearings tend to break. fails and then what happens is that the roller, instead of rolling smoothly along the cam lobe, ends up hitting the cam, which causes the cam lobe to wear significantly and eventually causes a complete failure in that cylinder because the cam lobe can no longer push up on the valve. where it needs to go, so that's what we were talking about when we talked about the hemi tick, there seems to be a couple of reasons why people think these lifters fail. Now looking at the forms you can see all sorts of different reasons like the mds system causes these faults bad oil causes these faults lack of lubrication which is what I talked about in the first video causing these faults, so let's start with the nds system, the multi cylinder displacement shutdown system on these trucks, so basically what happens is when you're just driving around town and you don't need as much torque or power, this

engine

will automatically shut down at four cylinders, saving you fuel.
ram 1500 hemi tick explained revised   the cause and how to protect your engine
I took it myself. I went to the local Dodge dealership here in town and wanted to know whether or not the mechanics felt this was a proper claim and what they told me about these lifter failures specifically on trucks anyway is that they have had trucks with and without the mds system they had elevator failures and now couldn't tell me specific details. numbers, but they were pretty confident in saying it was about 50 50 split and right there that tells me that the mds system really doesn't have a critical impact when it comes to lifter failures, now these dodge guys work on these

engine

s. every day and when they fail they are the ones that replace the risers and cam so I trust their opinion when they say they believe the mds system doesn't really have a critical impact on riser failures another common cause I see people talking.
ram 1500 hemi tick explained revised   the cause and how to protect your engine
The issue is lack of lubrication now, like I said, I made a whole video myself basically saying that lack of lubrication was the main cause of these lifter failures. I think it has a role to play, but I don't think it's the only cause. of these lifter failures, now one of the reasons this reasoning has taken off is because uncle tony from uncle tony's garage made a very good video talking about how he believed that um chrysler made a major design defect with their hemi third generation, which is This bad boy here says that there was an inadequate amount of oil getting to the lifter roller bearings and cam, which would then cause these lifter failures.
I highly recommend you watch that video. I'll put a link below. Some good information, but I think there's more to the story than just that and we'll get into that right now. Another reason people think these lifters fail so often is simply due to bad oil. I think there is a smoking gun when it comes to this topic and we will delve into it, so first of all there is an article written by Dave Tracy. I'll put

your

link below. You should take a look at it. It is a wonderfully written article and has an expert testimony. um, within that article various aspects of lubrication and lack of lubrication, etc. are discussed, so we'll get into that right now.
The first thing that happens is you take a faulty lift to an expert mechanic shop and what they do is magnify the problem. lifter roller and what the machine shop expert says is that it revealed marks between the lifter and the cam lobe due to excessive slippage between the lifter roller and the cam due to lack of lubricant adhesion. He goes on to say that the surface indicates very little discoloration or pitting on the failed roller, indicating that there was actually enough lubrication or enough oil at the time of failure, but he also says that he believes the lobe and lifter failure is probably the result of the type of oil used. lack of oil additives or oil degradation that caused this specific failure, so this is interesting because basically what they are saying is that this lifter failure was not due to there being a lack of lubrication or enough oil present at the time of the failure, indicating that there was a lack of oil additive the oil had potentially broken down causing this failure over time the oil breaks down its lubricating ability tends to fade the more it is used now here is why I think This is a major problem with these trucks is because I know Personally this truck has an oil life meter.
I don't follow it because it's crazy. This truck literally told me to change the oil after 14,000 miles, like eight months. I'm a mechanic now, so I have the luxury of knowing. That's a little crazy, but if you were the average Joe and you just bought this truck, you'd say, Wow, they must have made the engines more efficient or something. You know, people don't understand that you know oil as well as I do. I see the oil going bad in these engines because people don't change the oil, so I can see how dirty oil could play a huge role in these lifter failures, so what I'm going to do next is be a little more technical and I show you why I think bad oil plays a big role in these lifter failures.
Now, another top OEM R&D powertrain engineer took a look at these hemi lifter failures and said this could be caused by one of three things: Lack of lubrication. which we already talked about bad stuff which we'll talk about in a second and excessive lifter clearance now you're probably wondering what excessive lifter clearance has to do with bad oil. Well, the hemi engine uses a hydraulic lash adjuster. Most modern engines tend to use some type of hydraulic lash adjuster on their engines because there needs to be some clearance between the camshaft and the rest of the valve train to allow for heat expansion between the different moving components, so in simpler terms the hydraulic system The latch adjuster uses engine oil now with the hemi engine it is fed through the push rod into the lifter assembly now once in the lifter assembly we have a little check valve or a one way check ball here, engine oil is forced through there, that engine oil then forces the lifter against the cam and the cam lobe and this is what sets the proper clearance of the valvetrain or the amount of clearance that's going to be in the valvetrain, it's all laid out in this little set here and obviously this drawing is very simple, now what?
What bad oil can do is start to build up sludge on this check valve right here or the dirt and debris in that old, bad oil can start to build up on this check valve and that will slightly restrict this oil passage and make it What will happen is that this lifter assemble the plunger inside will not be able to fully extend over the camshaft or to spec now, so although we are probably dealing with a couple of extra thousandths of an inch of valvetrain play, is still very important so here we have a nice drawn can and the cam lobe and normally a lifter will start to lift right at the beginning of the lobe and now these loads are usually designed to have a very gradual start of lift to minimize the impact when this cam flies around where you I have to imagine that when the engine is, say, 3000 rpm, this cam is spinning, so when this load increases at high speed, you want a gradual lift right at the beginning, right where starts to make contact with the lift, now with this extra space, what's going to happen is we're going to start lifting a little bit later and what that means is that instead of just having a little bit of gradual lifting at the At first, we're going to have a lot more impact as this camera is flying and as we have more impact on the roller, it's going to cause some damage.
Now we can even graph that exact example, so here you have the extension of the valve so you can gradually see that we have a nice gradual step and then we actually start to open that valve and then gradually close it again, so this dotted line here is with a normal valve clearance and you can see that the lifter will start to lift at a very gradual point and it will close at a very gradual point, but when we have excessive valve clearance, you can see that the lifter will start to lift at a very gradual point. much steeper point, there will be more contact, more force here and again, it closes at a much steeper angle, so I hope that makes sense to you.
How bad can oil clog this or can debris in the oil slightly affect the one-way check valve on the lifter and therefore affect the valve train clearance which is what will give you that ticking when this roller impact the cam lobe instead of gradually opening it will impact the cam lobe so I hope that makes sense to you now if in fact there is more force at the moment of contact between the cam lobe and the roller because again they have to imagine. this camshaft is spinning even as if it were at idle, this thing moves quite quickly and therefore instead of gradually lifting the roller, what it will do is more or less hit against it and therefore, what that will do to the oil. the oil is going to deteriorate much more quickly and especially as you can see my beautiful drying, we have the little roller bearings in there and if the oil inside is deteriorating at a very rapid rate, these bearings are going to fail and that is exactly what What we see with these lifters is that these bearings are failing now if we can complete this circle and we go back to our expert analysis in the machine shop where they said that indeed there was enough oil present but that the oil itself had broken down and that the additives and the lubricity in the oil was not enough to withstand the force that the camshaft and the rollers were exerting on it, so we are starting to see a kind of picture here of what could be happening just by having oil in poor condition.
The last thing I will say on this is to use the factory specified weight of oil. I know some people like to use heavier oil in their engines because they believe it will somehow preserve the engine or extend its life in some cases. cases that may be correct, however in this case what we are talking about is that if there is heavier engine oil, more pressure will be needed to give it the proper valve clearance that we are looking for, so again you can end up with a excess. valve clearance with heavier oil, which is exactly what you don't want and again, guys, we're talking thousands of inches so you know if you're using a motor oil that's twice as thick, you could end up with twice as much.
The valve clearance here is not what we want so keep in mind that thicker oil in this case could be somewhat catastrophic and that is why I think dirty oil can greatly affect these lifters and eventually cause them to fail and simply eat the camshaft. So the last thing I'll talk about is the quality of the lifts. I've seen a lot of things online that talk about how the elevators themselves are the problem. Chinese elevators, you know, just aren't made to proper specifications. Metallurgy is not. All right, and what do you have, Dr. Andy Randolph, who is a Nascar engine developer?
He talked about how he has personally seen lifters for this exact motor that come out of the box brand new and are missing a roller bearing or a needle bearing, forgive me andkeep going. To say further, even if, say, the needle bearings or one of the needle bearings is out of spec, let's say you know a thousandth of an inch or two thousandths of an inch, that can cause a lifter to fail because that needle bearing specific needles fail. going around and around it will have a lot more pressure on it and then that needle bearing will fail and then the rest will fail behind it, so I think it makes sense to say that potentially, when these engines first came out, the Chinese supplier of It's possible that these lifts haven't controlled the quality of their products enough because as I said in the past, Ram updated their lifts starting in 2016.
They went to a new supplier to potentially fix that issue, so what's the bottom line here and No? I'm going to say 100 that bad oil is the only cause of lifter failure, but I think bad oil, sludge on the lifters, could be a very real possibility as to why the lifters are failing in this truck. You know bad lifters could 100 percent be a real cause too and like Uncle Tony said, I think maybe the fact that the cam is mounted a little higher could also have a role to play as maybe If there is some lack of lubrication at some lower rpm speeds, I think all of those probably have a role to play, but I would say the main problem, as far as I can tell, from what I've researched, is that it could just be oil. bad on these engines, I think when the average person sees that they can run their truck on standard non-synthetic oil with a cheap three dollar filter for 14,000 miles and that's fine.
I think that leaves some room for bad oil, dirt or debris to get in. these little holes in the risers and cause them to fail so I hope you enjoyed the video and I hope you got something out of this. You know I'm not an expert or an engineer with these engines, so here. my word with a grain of salt this is what i found online this is what i have researched anyway guys enough to talk about it it was a longer video i felt like i really needed to dive into it and i hope i got my point across period and As always, if you liked the video, be sure to leave a thumbs up, help me, help the channel.
My goal is to reach 10,000 subscribers this year, and if we do that, I'll take this truck all the way. north when I mean north I mean north to the arctic ocean next winter it's about you know, I think it's a 3,000 kilometer trip cold, lots of snow, it's going to be a lot of fun, so if you like that kind of thing Maybe think about subscribing, that would be awesome and I'll see you in the next damn video.

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