ok guys got a major problem... my 06 megacab rolled the #6 compression ring out pats the headland of the piston and commenced to destroy my head and cylinder wall. also seems that it screwed the injector up and made a real nice hole about the size of a golf ball in the piston... so heres my delima. Do i rebuild, bore hone all the good stuff that goes in to a rebuild. or drop in a crate engine. im leaning twards a crate engine due to me moving across the country recently and not having a gaurage to tear it apart and rebuild it. now heres another hurdle to cross. i can get my hands on a 08 6.7 for dirt cheap. question is has anyone done this. ie. convert a 5.9 to a 6.7 i know their the same basic engine design but how does the computer deal with the extra displacement diffrent injectors etc. i wont be running any emmisions equipment at all. just need to know if its worth the time to fool with or just drop in another 5.9 the extra displacement would be nice but not sure if the injector harness, sensors, manifolds, engine plate that bolts to the transmission, you know all the small things that throw a wrench into the works when swapping in a diffrent engine. any help would be greatly appreciated..

 

If you rebuild the 5.9 make sure you get the injectors checked I would bet that number 6 is bad I have been told the 6.7 is pretty easy to make work I'm sure someone else can chime in on that

 

Thats or sure I've done checked with industrial about rebuilding all of them to 125 horse.

 

i believe EFI live supports 06-08 cummins now so i wouldnt think it would be hard at all even if you used the same computer. been a while sense ive been on there but go to EFIlive.com/forum and look around

 

Dynamited cylinder = a different block, a used engine, or a remand engine. I'd go with a remand.

 

Why would you say that If the cylinder wall is bad it could be oversized or it could be sleeved

 

Did the cylinder get hurt enough that your current block is not usable? You can put a 6.7short block in the place of the 5.9 just use everything else from the 5.9 including the head from the 5.9.

We can do a rebuild, a reman crate, or even do the 6.7 short block all three with the larger injectors if you would like. If you want to call and talk about it just give me a ring.

 

If I had to guess id say it would need to be sleeved. But I'm nit a fan of that. Imo.. If it needs sleeved replace it. And cumin un glued ill give you a ring on mt days off. and thanks to all who've replied.

 

I rebuilt a 5.7 Olds diesel once (crank was busted in two spots). I stripped the block, had the oil galleys cleaned (was a good thing cause they were full of crap, including metal). Pistons were good, so new rings, cam, main, and rod bearings. Polished crank, had the injector pump rebuilt, injectors cleaned and tested, new high volume oil pump, and all new gaskets. Here's the biggest mistake I made: I overlooked the fuel shutoff solenoid and it failed on me. My dad was screwing with something in the pump and had me start it up. Next thing I know, engine is up to 3000 rpm and climbing. I hurried up and got the intake bridge off and used my hands to snuff the engine enough to keep the engine from blowing apart.

So a month goes by and me and a buddy are headed out of town. Next thing I know, a lot of smoke, followed by low power, then the dreaded clunk. Tore the engine down, and sure enough, another broken crankshaft.

So the moral of the story, what looks like a routine rebuild, may end up costing you twice.

 

A 5.7 olds has nothing in common with a cummins 5.9 just saying