Synthetic Oil
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Hemi395
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Whats everyones hot idle RPM in drive? Mine dips to 470RPM sometimes and while running a 20wt oil the oil pressure would get down to 25psi sometimes. I bumped my idle speed up to 650 and coupled with a 30wt oil my hot idle oil pressure is around 40psi. I'm really getting convinced that its in part a lack of lubrication to the top end of the Hemi that is causing these cam and lifter failures.
The older vehicles I used to have would all idle at or above 600RPM. My 87 Monte Carlo with a carbed 350 would idle at 750. Really miss that car...
The older vehicles I used to have would all idle at or above 600RPM. My 87 Monte Carlo with a carbed 350 would idle at 750. Really miss that car...
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My lowest idle speed has been just over 500 with 37psi but normally around 700 to 750 with 41 or 42 psi, that's with 5/30. That's oil temp around 210 in drive.
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Hemi395
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FYI, this is the tally by year of the cam failures on the other forum:
2009: 4
2010: 5
2011: 25
2012: 11
2013: 4
2014: 1
2015: 1
2016: -
2017: -
2018: -
Total: 51
2009: 4
2010: 5
2011: 25
2012: 11
2013: 4
2014: 1
2015: 1
2016: -
2017: -
2018: -
Total: 51
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good find, and hemi tick would likely be a much larger group, that is just the fails. someone should let them boys know about redline.
I feel like I'm gonna be doomed, getting the tick so early, damn that is ugly.
I feel like I'm gonna be doomed, getting the tick so early, damn that is ugly.
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Wander what changed between 2010 and 2011. And have they got it figured out now or just not enough miles on the newer ones?
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Hemi395
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In the huge thread over there on this, there was talk about poor camshaft castings in late 2010 to early 2012. I'm not sure a "soft" cam could take out the roller on a lifter tho...
Hemi395
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How early on did yours start ticking? Mine was around 4000 miles if I recall...
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I read somewhere that late 15 early 16 I think it was that they decreased valve spring pressure.
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as i remember it was around 3500.
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I'm going to show my ignorance here but I'm gonna ask it anyways. Did the older roller lifters have bushing type bearings or have they always been needle bearings?
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Rampant
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Is yours the only 6.4 with "the tick"? I don't remember many (maybe a couple) ever reporting they had it. Of course, there are far fewer 6.4s on the road than the 5.7, but it would be interesting to compare the differences in valve train for any tangible correlation.
Hemi395
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A while back someone showed that both the 6.4 and the 5.7 have the same MDS lifter part numbers. Not sure about the non MDS lifters...
Murphy Slaw
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SyN
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Sorry to break up the fun!
Promised a couple pics when I brought her home.
Never thought we would end up with this one! But she has every option I went after.
Thought we would end up with a White/Chrome or Silver/Chrome not Delmonico Red Pearl/Chrome.
First addition will be a set of step up bars.
Then FuMoto Valve / Then block heater cord
Promised a couple pics when I brought her home.
Never thought we would end up with this one! But she has every option I went after.
Thought we would end up with a White/Chrome or Silver/Chrome not Delmonico Red Pearl/Chrome.
First addition will be a set of step up bars.
Then FuMoto Valve / Then block heater cord
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SYKRAMMAN
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Nice man, Congrats.
SyN
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whetrick1
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Well my 2016 5.7 crew cab has 35,000 on it right now and I haven't developed the Hemi tick. And hope it doesn't. She runs so good.
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Rampant
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Not that they are the authority, but according to www.moparpartsgiant.com the non-mds lifters are the same. See below.
2014 Ram 1500 8 Cyl 5.7L HEMI MDS VVT; 8-Speed Automatic Transmission
- Mopar Part No.: 53021572AF TAPPET-HYDRAULIC ROLLER
2014 Ram 2500 8 Cyl 6.4L Mid Duty HEMI MDS; 6-Speed Automatic Transmission
- Mopar Part No.: 53021572AF TAPPET-HYDRAULIC ROLLER
I've not heard of any bad lifters, wiped cam lobes, bent push rods, etc., on the 6.4L. Not saying it hasn't happened, but I haven't seen anyone report it happening. The heads, cam, valves, and mds lifters are different between the two. Since the 6.4 calls for a 40 weight oil, I'm betting the oil journals are a bit larger diameter, which allows better [more] flow and possibly contributes to there being fewer valve train issues.
For the record, my 6.4 is at 32k and is/always has been silky smooth. Other than FF, it's never had anything but Amsoil SS 0W-40 in it. Running new formula in it now, no differences noted.
2014 Ram 1500 8 Cyl 5.7L HEMI MDS VVT; 8-Speed Automatic Transmission
- Mopar Part No.: 53021572AF TAPPET-HYDRAULIC ROLLER
2014 Ram 2500 8 Cyl 6.4L Mid Duty HEMI MDS; 6-Speed Automatic Transmission
- Mopar Part No.: 53021572AF TAPPET-HYDRAULIC ROLLER
I've not heard of any bad lifters, wiped cam lobes, bent push rods, etc., on the 6.4L. Not saying it hasn't happened, but I haven't seen anyone report it happening. The heads, cam, valves, and mds lifters are different between the two. Since the 6.4 calls for a 40 weight oil, I'm betting the oil journals are a bit larger diameter, which allows better [more] flow and possibly contributes to there being fewer valve train issues.
For the record, my 6.4 is at 32k and is/always has been silky smooth. Other than FF, it's never had anything but Amsoil SS 0W-40 in it. Running new formula in it now, no differences noted.
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