You have a tuner... NO WARRANTY.

[AH64ID]

8 hours ago, pepsi71ocean said:

Correct me if I'm wrong but doesn't the cam profile on the CR trucks also play a roll in blowing the head gaskets? I have always believed that the in-cylinder EGR that was done with the the aggressive cam profile on the exhaust side was causing pressure spikes?

 

5.9's don't really have a HG issue, and the CR 5.9's have one of the worst OEM cam profiles ever... if not the worst. Then again, I've heard the 6.7 and 5.9 CR's use the same grind, thou the part numbers are different. There was also some discussion years ago about the 03-04 cam vs the 04.5-07 cam being different and part of the reason the 03-04's were cleaner and more efficient but the 03 and 04.5 use the same part number and the builders I've talked to say they are the same. 

The cam profile was designed to create an in-cylinder EGR in lieu of having an external EGR, which in theory is a good idea. The intake duration is the longest of any ISB in a Dodge/Ram and the exhaust duration is the shortest. This really reduces flow thru the cylinder, as does the very restrictive turbine housing. 

 

 

All that being said the CR's that have HG issues are the 6.7's with too much timing or improper tuning. The 6.7 has Siamese cylinders so there is less HG materiel between the cylinders and with stock head bolt torque it's quite easy to blow the HG. 

[Royal Squire]

@pepsi71ocean ACS sent me an email after receiving my ECM to test under warranty. Their exact words were “we must advise you that having a tuner voids all warranty as per our policy.”  

However they did go ahead and repair my ECM under warranty. 

 

[Guest 04Mach1]

I wonder if this common rail is still in operating condition.

 

[Dieselfuture]

For sale, low miles common rail Cummins, extra clean, well taken care of. Some red light is flashing on the dash. Don't miss this opportunity, won't last long...

[Mopar1973Man]

You know dang well and good a Ford boy will buy it either drive in the ground or steal the engine for his Ford. 

[Dieselfuture]

Or better yet, some pour guy will do all the research and decides to get a cummins just to start fixing it and then sell it and say Cummins is junk and get a duramax or something.