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CK5
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One Piece at a Time: My 1985 Diesel Suburban
- Thread starter AgDieseler
- Start date
Yours seems to have split exactly at the typical crack spots. I'm guessing the difference between your premium failure and my regular unleaded failure is that your block was cracked and mine wasn't. I felt bad scrapping an uncracked block, but it had enough other carnage that it wasn't a good base for a rebuild.
They’re still available. Funny enough, I actually got one about a month ago, and was planning to install as prep for an April trip.
That’s certainly possible. I was also cruising at highway speed with the torque converter locked, so the break was driven for a hot second by the driveline and that’s where the things got rowdy. Regardless, the mains broke at the outer 12mm bolts in the known places, and it’s not surprising when you see just how little material is left for those big bolts to grab.
Bye, Felicia.
David
Does the new block use a better main design? I've never been impressed with the bolt-on girdle. It may share the load somewhat, but it doesn't add beef where the beef needs to be added. Even the reduced bolt diameter found on later blocks doesn't really add overall strength, it just puts a bandaid over the normal failure mode. Better than nothing, but not a true fix.
Also...you drive a Ranger?
It does. Thicker, better material, and 10MM hardware that doesn’t bottom all the way down by the cylinder wall.
I do not. That’s my buddy’s. I borrowed it to move the engine, and now the scrap block.
David
Harvesting usable parts, the heads and injection system are available to those that might be able to use them.
ck5.com
I’d rather y’all have this stuff than do the whole marketplace thing.
I’ll be passing through several towns on the way to Moab for EJS, through NM and CO on the way to Wyoming in early June, and of course BB22 in September. So, delivery along those routes is also available if you can wait.
David
TX - 6.2L 4911 Pump, Injectors, and Heads
Harvested from my 6.2 and in perfect working order. DM me. Full 4911 pump and injectors. Pump is rebuilt by my local stanadyne house, and injectors are new builds. Combo has 10K on it, and depending on your turbo can make a reliable 425 lb-ft. $350, and this is pretty easy (and not terribly...
ck5.com
I’d rather y’all have this stuff than do the whole marketplace thing.
I’ll be passing through several towns on the way to Moab for EJS, through NM and CO on the way to Wyoming in early June, and of course BB22 in September. So, delivery along those routes is also available if you can wait.
David
The face your heads made when the crank let go…
WTF WAS THAT BRO?!
Our boy David is a perfectionist. Don’t matter if it’s the Charger or the Burb. If he’s going to do something it’s going to be high level quality work. That engine is high level quality carnage.
The level if carnage was aided by the GM bean counters cutting corners on the design and casting the block and crank out of glass.
Should send it to Detroit for warranty
That’s Dave’s 6.2 head lol
Owner reports, “making funny noise.”
I’m definitely not a preservationist.
Upon receipt, “put it with the others.”
Snap. Crackle. POP!
Meanwhile, this is the first new engine I’ve ever taken apart. She’s a beaut’.
Check out that double parting line. What a hottie.
Cast vs Forged. Throughly tickled about this.
We’ll get the last of it pulled apart tomorrow, and off to the machine shop for balancing. Our friend @Greg Ducato is going to have a look at the 4L80 and make sure it’s ready for a fresh dose of torque.
Things are starting to come together.
David
That's a nice & shiny engine. But I don't see a fuel delivery system. Does selling the DB2 mean you are switching to a DS4 now? Or some other super-secret plan? I see you sold the injectors, too... 
With the crank snout riding on just one bearing, how did you manage to avoid damaging the timing gears? I'd expect the shaft deflection to abuse them severely. Especially with the belt pulling it upward.
My crank broke at the other end, with the flywheel still supported on both sides (rear main and trans input shaft). And yet I remember witness marks on both the block and the flywheel. And I had a couple con-rods tearing loose from their pistons. Lots of chaos, even from a regular unleaded failure.
My crank broke at the other end, with the flywheel still supported on both sides (rear main and trans input shaft). And yet I remember witness marks on both the block and the flywheel. And I had a couple con-rods tearing loose from their pistons. Lots of chaos, even from a regular unleaded failure.
You won't be disappointed visiting Greg for the trans. He has worked wonders on one for me.
It’s in another box; just the 250hp DB2. More room for fuel, so I’ll give it what it wants.
Tough to call, but they seem to be okay. The idlers are straight and the bearings are fine. Everything is square and flat.
Possibly just good luck.
David
