Broken Crankshaft Count?
- Thread starter EDP
- Start date
This stuff has got me stressin too. Mostly because I can't afford to tear mine down and do over. Steve's breaking is what started my fears and now this thread really amped up the paranoia
In my experience the LBZ/LMM are more common but that might have something to do with the 6 speed transmission. A 5 speed truck cruising at 70-75 mph is past the 1650-1850 rpm range Mark mentioned. The 6 speed hangs out there all the time. But I'm still nervous my LB7's crank days are numbered
Glad my TCM tune doesnt let the trans shift into 6th until 77 mph!
Better hope it doesn't bust damian there's a dmax coming to your town in a year and a half sure would hate to be a loaner lol, just buy a AF cam and throw it in for preventive measures
Sent from a truck somewhere in the US
sure would hate to be a loaner lol, just buy a AF cam and throw it in for preventive measures Sent from a truck somewhere in the US
Yea I guess it was pretty close to your picture still unfortunate, I think the convertor and copilot had something to do with it, 4th would lock up so hard my turbo would bark,(the ex beating the hell out of it either to 4800 rpms and 121 mph didn't help either lol)
Sent from a truck somewhere in the US
Sent from a truck somewhere in the US
That was on an LMM with an Edge Evolution on a low setting and a DPF delete. I have no idea what it was doing when it broke, but I doubt it was anything serious. It was a company truck, so who knows how it was driven.
Guess it's a good thing I went to the lb7 crank, I got a good deal on one that a guy bought straight from the dealer and had it cryo treated(doubt it adds for anything but it's been done) and I got it for 1200 so I figured I couldn't go wrong with it
Sent from a truck somewhere in the US
Sent from a truck somewhere in the US
On these back of the engine breaks, did anyone magnaflux or die penetrate test the other throws? That is, was it cracking elsewhere too?
Any way possible you can provide any feedback about it, as Mark from Danville graciously did for everyone?
This is my least favorite post ever.... Got nothin against goats but that's batting for the other team lol
Easy now...
I'm a sales manager at a RAM dealership.
And I DD my Dmax :thumb::woott:
I know where my heart lies...
I think you're really playing into the fears, it's not like 50 percent of peoples cranks are breaking. Of course we hear about the ones that break, how many Duramax's have been produced and how many have actually broken cranks?
This is true.
However, the reason I said that is I still stock bottom end and if a piston cracks out if town. That would suck. Especially after watching my old LBZ crack one in front of me.
I daily my truck to work because it's fun to drive.
Anyways back on track.
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ive got well over 100k highway miles with the motor running at 1800rpm. no issues thus far but that RPM no longer happens at cruise since the gears went in in January. Brian and i atleast have a spare crank ready
