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Discussion Starter #1

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Welcome back!
Congrats on your new flatbed (y)
 

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Thanks OkDually!

I had it towed home, finally getting a good look at the truck. Overall seems moderate/good condition, just needs a thorough cleaning. Batteries were completely dead so I've got them on the charger to see if they'll take a charge.

Previous owner took the truck on trade (as a package with 3 other vehicles) and never even tried to start it, doesn't know what's wrong with it.

One thing I did notice is that I don't believe the crank pulley is supposed to be canted at this sort of an angle. Thinking I might have a nice two-piece crankshaft (means twice the torque, right?).


What do y'all think?
 

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From the picture it seems it's almost detached. If you're lucky like me, the bolt holding it on has bad threads in the crank.

I suggest doing the pre-checks on everything before you crank it. Like oil, trans, brakes, fuses etc.
 

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From the picture it seems it's almost detached. If you're lucky like me, the bolt holding it on has bad threads in the crank.
Hmmm. Doesn't that still mean the nose of the crank would be ruined?

I suggest doing the pre-checks on everything before you crank it. Like oil, trans, brakes, fuses etc.
Oh I'm going to drop the oil pan, probably tonight, before I try and rotate anything on this motor, especially after seeing that crank pulley.
 

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Discussion Starter #6
Crank seems seized. Trans in neutral and yet I had no trouble removing the crank pulley bolts; I remember doing this job on my old 6.2 I had to jam the pulley to keep it from spinning. Also, the co

Drained the oil, a quart or more of water came out first so that's a lovely sign. At least it was clean and not coolant, and wasn't mixed in with the oil, so it's likely just from sitting.

Next on the list is dropping that oil pan to see what we're working with.
 

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Well, that didn't go well.

The last guy used rtv instead of a gasket on the oil pan. I was getting it separated when the front of the block fell to pieces right above the oil pan/behind the balancer. Pan is still in place but I have a lovely view of the timing chain and lower sprocket.

Not even good as a core. Ugh.
 

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The engine dropped to the floor?
 

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No, when the crank blew it annihilated the front of the block. I'll get some pictures today.
 

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Probably was just the timing cover blown to bits, I don't know what I was thinking yesterday, I was very tired.

But I still figure there's something very wrong with the motor.
 

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A little Welding and torching and time for a 6.8 John Deere!🤓
Ha, no, I don't want my first experience learning to weld being something quite this extreme.

I did get a bead on a good running 6.5 non-turbo out of a Hummer; from my research it seems the non-turbo motor is the same as my 6.5TD, and it was the turbo hummers with the center-mount turbo that have the different heads. So, other than changing all the 24v stuff to 12v, this should be an easy swap, am I right?
 

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Shouldn’t be a problem. Make sure the bolts holding the lower intake manifold to the heads go in at the right angle. That’s the only major difference.
 

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Ha, no, I don't want my first experience learning to weld being something quite this extreme.

I did get a bead on a good running 6.5 non-turbo out of a Hummer; from my research it seems the non-turbo motor is the same as my 6.5TD, and it was the turbo hummers with the center-mount turbo that have the different heads. So, other than changing all the 24v stuff to 12v, this should be an easy swap, am I right?
There are a couple of differences.
N/A Injectors are lower pop setting
Precups are economy for the N/A Injectors
 

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Discussion Starter #17
There are a couple of differences.
N/A Injectors are lower pop setting
Precups are economy for the N/A Injectors
Hmmm. Neither of those seems worth swapping the heads with my unknown-quantity existing heads. I might just pick up a new set of injectors for the hellovit but the precups are a pretty minor concern.
 

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Discussion Starter #19
Picked up the motor, turns out it's actually a 660 block 6.2 with the long injectors. I'm considering swapping the heads across but also considering just bolting the ***** up and going driving.

Only real question at this point is the turbo oil feed; 660 blocks don't have the oil feed port, I believe my only option is to T off the OPS port?

Anything else I need to be aware of?
 
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