Re: 2012 ram MDS delete thoughts on this kit
[Re: GarageDodge]
#3261082
09/30/24 10:20 PM
09/30/24 10:20 PM
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Posts: 21,909 Enjoy life today, It has an ex...
gtx6970
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what cam? I would replace timing set&oil pump,flush out all the oil passages,as they will have metal in them from the lifter&cam. Stock grind 5.7 cam , just non MDS specs Im planning to change oil pump. VVT solenoid and timing set while its apart. As I really only want to do this once Tuner has capabilities of several different tunes / programming settings
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Re: 2012 ram MDS delete thoughts on this kit
[Re: GarageDodge]
#3261106
10/01/24 12:18 AM
10/01/24 12:18 AM
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Joined: Jan 2005
Posts: 12,487 Kalispell Mt.
HotRodDave
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The filter catches the metal before it goes into the passages unless you run Fram filters... in that case shame on you!
I am not causing global warming, I am just trying to hold off a impending Ice Age!
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Re: 2012 ram MDS delete thoughts on this kit
[Re: gtx6970]
#3261107
10/01/24 12:19 AM
10/01/24 12:19 AM
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Joined: Jan 2005
Posts: 12,487 Kalispell Mt.
HotRodDave
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Looks like everything I need.to make the change , Tuner is included so i can turn the MDS off in the ecm Make idle adjustments etc etc Free shipping so $1525 plus tax delivered to my door , other than oil it looks like everything I need to do this MDS delete update He recommends at a bare minimum cleaning / inspecting or replacing the oil pump and maybe even the VVT solenoid Thoughts ? https://www.amsracing.net/collectio...5-7l-hemi-engines?variant=11532742557732 The only reason to delete MDS is if your going to a bigger cam...
I am not causing global warming, I am just trying to hold off a impending Ice Age!
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Re: 2012 ram MDS delete thoughts on this kit
[Re: gtx6970]
#3261110
10/01/24 12:29 AM
10/01/24 12:29 AM
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Joined: Jan 2005
Posts: 12,487 Kalispell Mt.
HotRodDave
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Make sure that is an actual mopar cam not the Chinese copy for sale all over the place for dirt cheap, they are awful!
I am not causing global warming, I am just trying to hold off a impending Ice Age!
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Re: 2012 ram MDS delete thoughts on this kit
[Re: HotRodDave]
#3261201
10/01/24 12:11 PM
10/01/24 12:11 PM
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Joined: Jun 2003
Posts: 21,909 Enjoy life today, It has an ex...
gtx6970
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Make sure that is an actual mopar cam not the Chinese copy for sale all over the place for dirt cheap, they are awful! Thanks, Its confirmed, A New Mopar non MDS cam , and new mopar Scat pack NON mds hemi lifters I believe its this one https://www.summitracing.com/parts/mop-53022263af/make/ram/model/1500/year/2012#overviewIm after long term reliability . Not make it a race car . So stock is just fine And it seems its overwhelming to delete the MDS system for long term life in one of these engines. Combined with a quality full synthetic oil and high quality filter Its my daily driver and used to pull a trailer 2 or 3 times a year
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Re: 2012 ram MDS delete thoughts on this kit
[Re: 5thAve]
#3261944
10/04/24 12:25 PM
10/04/24 12:25 PM
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Joined: Jan 2005
Posts: 12,487 Kalispell Mt.
HotRodDave
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There's no backing to the MDS causing issues claims. It was never an issue in the earlier new Hemis and both MDS and non MDS lifters can fail. But it's probably the route to go when you're already in there. I agree, there is exactly zero evidence the MDS causes the lifter failure trouble. I do cams in manual cars and 5.7 ram 2500s all the time and the don't have MDS. The pre 2009 engines had MDS with basically zero lifter and cam failure and ironically they had an even lower volume oil pump so that theory goes out the window also. I have done enough cams in these to build a log cabin with them and never had to do one before 2009. I actually see less MDS lifters go bad than non MDS lifters in engines that have both, perhaps because the lifter is not experiencing high spring pressure every other revolution... they only have installed spring pressure wearing out the roller when the system is engaged while the normal lifters are cycling thru low spring pressure and maximum spring pressure. When the MDS solenoid is replaced with the plastic plug you get more oil to the lifter sides that is not useful and this in turn means less oil for rod and main bearings that is useful. Those MDS solenoids actually give the bottom end more oil when it is under a load and needs it the most.
I am not causing global warming, I am just trying to hold off a impending Ice Age!
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