Repair woes......

I know you are not kidding... A rubber o-ring keeps this all together? WOW!

I'll take a machined block and a shim any day over that hot mess. The forces that are put on the cylinder walls with the high compression ratios and the manufacturers telling drivers that it is OK to lug the motor? And then throw in extended oil changes? Speechless.

 

I had many engines since 2000. I promised myself no more Detroit. Detroit now is European engine. Waiting to see how x15 performs.

 

The X15 is a CM-2350 with a tad bit higher compression and the fuel pump is isolated from the oil circuit. Everything I have heard is so far so good. I would take the plunge and immediately install the African tune. Keep it under 550 hp, preferably at 500 or under, and I think it would be a good motor. The fuel pump issue is still there, 400,000 miles and replace. But at least if it does fail, it will no longer take out the motor. Liners are still an issue too... Just don't abuse the motor and you should be fine.

Just my .02

 

How do you know the fuel pump and liners are still an issue on the X15?
Wouldn't you think that Cummins knows about these issues and took some sort of corrective action?
It doesn't sound like issues that are too difficult to correct.

 

It is an inherent design flaw. The motor is good, not as stout as say the CM-870 and earlier models, lower compression, and definitely not an N-14. But I digress... From what I gathered with my time down at Rawze's house, and hanging out with Jerry, Mr Haggai, Cummins is still playing with the programming on the ECM, and that is the issue. It is not the mechanics, it is the programming and getting the EPA numbers for fuel economy up.

Torque levels have been downgraded along with HP.

My thinking is this, AUTOMATIC TRANSMISSIONS are the answer for these new EPA motors. Take the driver out of the equation and let the computer do the shifting. That is where we are headed.

The motor itself, LINERS, you cannot lug it, it is still the old design, same block as the CM-2350, and the same as my CM-871 and 870. It is all about the computer, these are not the motors we grew up with.

I think, and actually believe, the key to these motors longevity is the transmission, take the driver out of the equation.

 

8v71, not the engine they're discussing here.

 

DD13 and DD15 are same platform engines. same part cost, same problematic injectors, same stupid and expensive 1-box design ats, same repair procedures. btw new Volvos with Volvo engine have 1-box design too. and it's expensive ))))))

 

This is why we insist on finding a mechanical diesel from an older rig. Something we can fix ourselves.