Originally Posted by Hemibruce1
Do the Mopar lifters have a quality issue? Does it make sense to replace them with a quality aftermarket lifter even if Mopar is available? Should the lifter yolks also be replaced?
My opinion ...the stock lifters don't have a quality issue, it's more of a MDS/design issue.
(*)When the MDS is activated all 16 lifters are oil feed from the push rod, the MDS solenoid blocks off the oiling passage to the lifters....so in essences the lifters are being oiled from the top down which means the Rollers are getting oiled last.
the None MDS engines don't have lifter issues in-till you get to High spring loads in "race/hot street engines"
the newer lifters have larger "roller" axle diameter and larger feed holes.
Yokes are not an issue either, I do think over time they'll get brittle from heat cycles but I haven't pulled a 300K+ 5.7 apart yet that the yokes were an issue.
again my opinion, if you can get a set of Mopar lifters for 2017+ and you are not trying to spin the engine past 6K every stop light there is no reason not to buy the newer OEM lifters.....how ever If you are going to beat the living piss out of it.....GO Johnson Hylift I have not heard of any failures and they
toll manufacture lifters for Isky and Crower.
*yes there will be a video on this before the end of the year...with a dissected block
05 GTxtreme [email protected]
, Not bad for a 392Ci NA 4400 lbs truck ,
04 SLT [email protected]
98 ( I know there's more,stay tuned)
04 GTX...Under the Knife.