Another MDS thread Yes I searched

[EdGs]

Don't mean to hijack the thread, but what did you do with the transmission heating lines after removing the 3-way valve? As far as I understand connecting the heater hose to the water pump outlet would leave the tranny without any heating.

Maybe it's not that of an issue in FL though.

The 3-way valve is still on the truck. I removed the hoses that hook to the 3-way valve and left the transission heater lines in place, I have not cut them off yet. I will likely do that at some point. I do have to do my transmission service and install a PPE pan.

I ordered part # 55056906AH which are heater core hoses for a 5.7 Hemi without a 3-way valve.

Perfect fit from the engine to the heater core.

You can still see the transmission heater lines next to and below the top water pump hose.

Not sure if I will remove the transmission heat exchanger yet or not. I do have @caulk04's bypass to install as well.

My transmission temp still gets up to around 180° eventually. The other day, it was 40 degrees out and when I got to work after driving 26 miles, trans temp was only ~130°.

Edit: I just drove 26 miles home to get the Wife, then drove 45 minutes to take her to an airport, affter an hour there, drove 25 miles or so back to my work, and my transmission temp was 188°.

 

[Wild one]

Don't mean to hijack the thread, but what did you do with the transmission heating lines after removing the 3-way valve? As far as I understand connecting the heater hose to the water pump outlet would leave the tranny without any heating.

Maybe it's not that of an issue in FL though.

FYI: only the 1500's use coolant to heat the transmission,the cars with the same 8 speed don't heat the transmission with coolant,and neither do the 2500's and up with the 8 speed heat the transmission fluid.
They still have a transmission thermostat,but it's a stand alone thermostat and not attached to the side of the transmission and stuck under the thermal management unit aka: heat exchanger.
These are the lines that can be eliminated if you get rid of the leak prone thermal management unit,which will pump coolant into your transmission if it ever leaks,destroying your tranny in a matter of a couple miles.
Read through this thread on how to eliminate the heat exchanger.

RevMax 8 speed thermostat bypass

I'd do exactly what I did with my Harley. Heat the thermostat up and take measurements of it when it opens up. Then make a solid plug (likely aluminum) that copies those dimensions. This way, the cooler/heater operate exactly as the factory designed it to when the trans is HOT. It would just...

www.ramforum.com

 

[Ken226]

FYI: only the 1500's use coolant to heat the transmission

RevMax 8 speed thermostat bypass

I'd do exactly what I did with my Harley. Heat the thermostat up and take measurements of it when it opens up. Then make a solid plug (likely aluminum) that copies those dimensions. This way, the cooler/heater operate exactly as the factory designed it to when the trans is HOT. It would just...

www.ramforum.com

The wife's 22' Durango R/T doesn't have one either.

Last summer I spotted a puddle under the transmission.

I freaked out and put it up on stands to check the heat exchanger thing, and discovered that there isn't one. The trans cooler lines are just like my Ram 65RFE. From the trans, to the cooler, then back. Nothing else.

The puddle was condensation from the rear A/C condenser line. That's another thing I discovered. It has a 2nd A/C condenser way back behind the passenger side wheel, with lines from the AC compressor running all the way back, and routed above the transmission. The lowest point on the lines is on the D/S of the transmission, all the condensation seems to run down the lines to that point, and leave a puddle right under the front left corner of the pan.

 

[Wild one]

The wife's 22' Durango R/T doesn't have one either.

Last summer I spotted a puddle under the transmission.

I freaked out and put it up on stands to check the heat exchanger thing, and discovered that there isn't one. The trans cooler lines are just like my Ram 65RFE. From the trans, to the cooler, then back. Nothing else.

The puddle was condensation from the rear A/C condenser line. That's another thing I discovered. It has a 2nd A/C condenser way back behind the passenger side wheel, with lines from the AC compressor running all the way back, and routed above the transmission. The lowest point on the lines is on the D/S of the transmission, all the condensation seems to run down the lines to that point, and leave a puddle right under the front left corner of the pan.

Thanks for that reminder Ken.I keep forgetting about the Durango's

 

[BlakRose]

I'm new to the Hemi truck owners topic...
I got my son a 2006 Hemi 1500 and myself a 2016 Hemi 1500.....
Both had quiet running engines except for the common exhaust manifold leak wich is why I got them cheaper.....
Anyways, I've read that the main valve train issue is idling and the lack of oiling being splashed back up on to the cam. What I don't understand is why people don't spend the $ and use quality oil to help this issue. My 2016 has 166,000 miles on it and I'm running a good quality oil in it. I know the last owner had the oil change Frequently done at a local Valvoline oil change place. I flushed the engine using Amsoil engine flush and im currently running Amsoil Signature series with a WIX oil filter and I've been beating the S$it out of my Hemi with no issues for 4 months now since I became the new 3rd owner. My son's 2006 Hemi had 140,000 miles again with proper oil changes and I switched him to Pennzoil Platinum with a WIX filter and again he beats the **** out of it with no engine or valve train issues. I have both trucks tuned with the MDS disabled and both run like a champ. I know that the MDS is claimed not to be the major failure of the valve train as everyone claims, I'm sure that the major problem is not using good quality oil. I'f my 3.6 engine that's known to have valve train issues and has survived many 7500+ rpm blasts using a good quality oil that may be the key thing with the Hemi's having valve train issues.
I would just recommend switching to a good quality oil while the engine is still running quietly without valve train issues before something goes wrong.......just my two cents......

Note: My 2013 3.6 engine has used Pennzoil Platinum since the first oil change at 3000miles and after 140,000 miles the valve train is still spotless with no issues at all....

 

[PowersOf12]

Here is what Dodge replaced when they did mine under warranty. My neighbor did his in a weekend for $1350 and he had never worked on an engine down to the cam before.

I put every mile on my truck, and it was not lack of maintenance (oil changes by Dodge every 5000 miles since new) and I never idled unless at a stop light or a few minutes waiting on the little lady to come back from a store.

Sure, I have lots of highway miles and that means MDS on most of the time as I try and set MPG records on every 1000 mile trip. (My best was 23.8 MPG when new, now my old and tired Hemi gets 21.5 MPG)

This job was at 154,000 miles and I now have 184,000 miles.

 

[EdGs]

@PowersOf12, what did they charge you on that job? I'd love to see the parts/labor breakdown.

Looks like they reused your head bolts, and kept the timing set as well. Interesting.

 

[PowersOf12]

Yes, I wanted them to change water pump, oil pump, anything they could but because of warranty, they said they had to stick to the book.

 

[EdGs]

So they didn't put an actual cost on the repair since it was a warranty job?

Was hoping to see what they charged off.

 

[chris22888]

I got mine done, and boy was that camera eating up. Went ahead and did the delete and the oil pump. It's my busy time of the year, so I had a friend's shop do it parts and labor, and the tune was out 3680. Although I am sure I could have done it, the hours were better spent doing some other IT work and paying him to do what he does.

 

[EdGs]

I got mine done, and boy was that camera eating up. Went ahead and did the delete and the oil pump. It's my busy time of the year, so I had a friend's shop do it parts and labor, and the tune was out 3680. Although I am sure I could have done it, the hours were better spent doing some other IT work and paying him to do what he does.

Looks like good ole lifter turned sideways.

I wonder how much metal was on the VVT solenoid.

On what cylinder did the lifter go bad?