Mine was about 5750, now it's 6000.Yes ,that was a surprise for me,the RPM blockade,no more then 4000 wow
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Mine was about 5750, now it's 6000.Yes ,that was a surprise for me,the RPM blockade,no more then 4000 wow
The lack of lube on the roller bearings is a well documented shortcoming of the current OHV design, failures resulted when they raised the camshaft and didn't allow sufficient lubrication on the cam-roller interface.
I've got about 250 idle hours and 60kkm's, i inspected my roller bearings when I pulled the cam at 55k km's and they seemed fine, but I changed the rollers as cheap insurance. It's really hit and miss with these hemi's.
PS There no such thing as a "hellcat lifter", the part numbers are all the same.
I didn't do it for that reason myself, I did it because of the sound I didn't like and it did nothing for my fuel mileage that I could tell. Also something else that doen't have to work and go bad. There's a lot of things that came on my truck I don't need or use so I'd get rid of them also if I could.Curious if someone will provide a mechanical explanation of why disabling MDS will have a positive impact on cam/lifter failure. I’m seeing a lot of anecdotal input related to it but I can’t seem to find the mechanical reasoning behind it. Thanks.
Curious if someone will provide a mechanical explanation of why disabling MDS will have a positive impact on cam/lifter failure. I’m seeing a lot of anecdotal input related to it but I can’t seem to find the mechanical reasoning behind it. Thanks.
So i saw the other day when the hd trucks are in park you can turn on the cruise hit set then use the plus and minus to bring up the idle rpm. Can anyone verify this?In addition to reducing idle hours, and frequent OCIs, one of the no cost things I implemented was raising my idle speed from 550 to 650.
Can not really tell the difference between the two speeds and oil pressure is 42 at idle vs 38.
If you are tuned, this cost nothing and is reversible.
If these engines are needing higher zinc and moly why are people not running diesel or break in oil full time?
You can adjust idle using crusie control buttons on certain 6.4 chassis cabs and all CumminsSo i saw the other day when the hd trucks are in park you can turn on the cruise hit set then use the plus and minus to bring up the idle rpm. Can anyone verify this?
You can adjust idle using crusie control buttons on certain 6.4 chassis cabs and all Cummins
This is another interesting angle of the hemi engine and oil circulation. The hypothesis of replacing lifters and keeping MDS all the time may lead to some real world testing. But I now wonder if the failures (he mentioned 5%) are a mix of construction failures and people either turning off MDS without replacing the lifters (not sure why that would be a problem) or just using wrong/not properly maintaining the oil. If the pressurization is the key to preventing damage (that not caused by unpreventable failure) and MDS all the time is a good thing, how would this work? Is it possible to pressurize but not deactivate 1/2 the cylinders and not cause a new problem?Yep that was me. This is the video that prompted me to turn MDS back on. It shows how the lifters get pressurized oil while in MDS.
5.7 HEMI Lifter Failure Could this FIX the lifter issue FOREVER?
Hey guys, revisiting the 5.7 HEMI lifter failure video I made a couple months ago. I wanted to address many off the comments that I got from the last video, ...youtu.be
All good points in that video but If MDS all the time is actually the key for pressurization why in the ef would the engineers not keep eco/mds on at idle which is arguably the most critical time of proper lube, not to mention save fuel at the same time, win-win.This is another interesting angle of the hemi engine and oil circulation. The hypothesis of replacing lifters and keeping MDS all the time may lead to some real world testing. But I now wonder if the failures (he mentioned 5%) are a mix of construction failures and people either turning off MDS without replacing the lifters (not sure why that would be a problem) or just using wrong/not properly maintaining the oil. If the pressurization is the key to preventing damage (that not caused by unpreventable failure) and MDS all the time is a good thing, how would this work? Is it possible to pressurize but not deactivate 1/2 the cylinders and not cause a new problem?