P.S. - This happened almost exactly where @Monty5150 picked up a rod knock a few weeks ago. 
CK5
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The Green Grendel
- Thread starter campfire
- Start date
Film clip of the problem.
Getting the tech out of the lounge...
I know the crank is scrap, but I'm not sure the block is worth saving. I think it's easier to find a complete engine than a crankshaft. But I haven't started looking yet. I'm not sure what direction I want to go.
I know the crank is scrap, but I'm not sure the block is worth saving. I think it's easier to find a complete engine than a crankshaft. But I haven't started looking yet. I'm not sure what direction I want to go.
Parts are available, if you're willing to look and wait some. Finding a decent running takeout is probably your best bet as far as cost and down time. I recall seeing running engines between 500 and 1000 bucks. That's going to be your earliest route to go.
Repower with different engines are easy on these trucks as you know. Mainly comes down to cost and time.
Can't make that call right now. I have 9 days to get one of these trucks running, and the other one is a lot closer to being functional.
I can find entire 6.2/6.5 donor trucks for $1000-$1500. Engines used to run $300, no idea if there are any left around here.
If I hafta swap, the new engine oughta be better than the old one.
I have a local buddy selling a late-model replacement 6.5 crate engine with 40k miles, mounted in a '94 truck with no transmission. Perfect donor if I want to stick with the 6.2 family. If.
LS
Have you tried turning it off and back on again?
Do you have any other ideas? The back of the crank is wiggling. It appears to crank somewhat normally, but the sound is still there.
The engine? Yes. Several times now.
My older brother had an Escort GT he raced on ice covered ponds and lakes in NH ,and it broke the crank between 2 cylinders,after running it wide open with no rev limiter at least 2 seasons--it still ran and drove,just had a horrible clatter and though he finished a race that way with it,he feared it would lock up suddenly..
He pulled the engine apart later on at home and saw the crank did not just shear off cleanly,it was like a finger joint in wood,and the pieces would still lock together well enough to let the whole crank still turn as a unit--with some free play,much like yours has in it..
I'm pretty sure the crank in the 6.2 I got from my friends ramp truck snapped in the same manner..
He pulled the engine apart later on at home and saw the crank did not just shear off cleanly,it was like a finger joint in wood,and the pieces would still lock together well enough to let the whole crank still turn as a unit--with some free play,much like yours has in it..
I'm pretty sure the crank in the 6.2 I got from my friends ramp truck snapped in the same manner..
What locates the crank? Can it be explained by a loose balancer? Don't get me wrong, it does sound like something bad has let go, but anything that lets the crank move fore/aft can let stuff hit and clatter.
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Pull the flywheel off but that sure looks like a broken crank to me. I've seen several complete 6.2L engines out here in Utah for cheap in the last year or so.
This is pretty much exactly what I told him last night. If it breaks on a journal they’ll almost always lock together and still run just very unhappy. Back when I worked at peterbilt a guy limped in a C15 that broke it. Still ran fine just made a decent racket
The back of the crank has that ridge 1/2" in from the end. I assume that has started machining the block by now. The flywheel has been scraping for sure.
It was a 2 or 3 hour job last time. I don't think I'll do that before the other truck is running.
It's tilting as well as rotating and translating longitudinally. No way the whole crank is tilting, so there's a break somewhere. And I'd bet it's toward the rear end.
That's everyone's favorite answer, but not a quick swap to do right.
If I hafta swap, the new engine oughta be better than the old one.
I have a local buddy selling a late-model replacement 6.5 crate engine with 40k miles, mounted in a '94 truck with no transmission. Perfect donor if I want to stick with the 6.2 family. If.
That right there sounds like you answer to engine, time frame and turbo power!!!
Seeing how it's put together, I suppose the other failure modes that could cause that are worse than broken crank - in terms of reviving it someday. You're not pulling the engine from the Suburban, right? The Blazer will sit while you rush the other things the Suburban needs?
It's weird, as I was pulling into the harbor on Friday I remembered you said you'd be on CB channel 16. So I keyed the mic and said "Ethan, this is God. You must LS swap all your trucks." It turns out you weren't in town yet, but maybe that was really a message from above?
It's weird, as I was pulling into the harbor on Friday I remembered you said you'd be on CB channel 16. So I keyed the mic and said "Ethan, this is God. You must LS swap all your trucks." It turns out you weren't in town yet, but maybe that was really a message from above?
