Very unique problem. Looking for ideas on how to get this out. Yes I am dumb 🙃

Was using the extension in lieu of the little rods that would be in an ls HB puller kit.

Pretty sure it's not stuck in threads as an impact & breaker bar didn't move it in the slightest. I think it's mauled the inside of the crank? Either way it's stuck as ****. No room to hit it with a hammer or anything like that, I've tried combinations of vice grips &/or pliers with hammering and it doesn't move.

Taking all ideas, preferably I'd like to not cut anything if I don't have to but it is what it is. Probably won't use this HB again as I've been hammering on it, etc. probably bent it slightly.

(It is a 1/2" extension, phone is not letting me upload photos so I will try from my PC when I can)

 

front

side

Heres some pics

 

A slide hammer? Make a “C” shape grabber to slip over the shank to hold on the extension.

 

Weld a nut on the extension so you got something to turn it with and or pry out on

 

Small pipe wrench and twist it right out

 

Just when you think you've seen it all.....I have never seen anyone do this. Ever. At this point, I'd be more concerned about saving the crankshaft than whether or not the extension can be removed. I'm sure it can be removed. Question is whether or not it can be removed without destroying the crank threads. I TOTALLY disagree about welding a nut on the extension and then trying to rotate the extension. If it were my car, I'd take it to a pro and see if they can salvage the crankshaft. The fact you wailed on a very sensitive part (the HB) with a BFH tells me you either have little mechanical skills, or just had a really bad day. I'm leaning towards the former. I've never seen anyone wail the Hell out of a HB. Again, I'd suggest taking it to a qualified mechanic and hopefully they can save the crank threads. As of right now, if you take it to a shop, and need a new HB, I'd bet you'll be into this for at least $500-$600 IF the crank threads are OK with just chasing them with the proper tap. I wish you the best of luck. Maybe @Che70velle will have an idea.....

EDIT!!! On second look, I see you have the engine out. That's a big plus, so disregard taking the car to a pro. Take just the engine to a pro.

Here's a tip from a guy with 50+ years of working on engines and other mechanical items:
Too many times over the years I've seen guys who knew better (or at least I thought they did!) reach for a BFH and start wailing the Hell outta whatever it was they were working on. My advice is this: ALWAYS use the right tool for the job. Rarely is a BFH the right tool for most jobs. If something wont move when you think it should, DON'T FORCE IT....

 

Maybe something along the lines of a flaring tool like this https://www.harborfreight.com/double...kit-58641.html and some kinda setup where you could use a puller on it, against the front of the HB? Might need to reinforce the flare tool a bit though.

 

If your not going to use that Harmonic Balancer, just cut the legs. That will give you room to work on extracting the extension.

You have most likely damaged the threads on that crank now. The threads are an M16 x 2.0 pitch.

 

Regardless if the bolt is stuck… Is there a reason why you still can’t remove the balancer?

Chances are you’ve mangled your crank, I would focus on getting the balancer all the way off then move your attention to getting the bolt out

 

Damn it son! Those crank threads are boggered up for sure. I'd make a slide hammer using a long extension and weld the extensions together and try removing it that way.

 

WHAT bolt??? It is a socket extension that is stuck, NOT a bolt. If the bolt was still in place, the crank threads wouldn't be compromised....

 

I meant to say extension not the bolt obviously, I also stated he mangled his crank.

Theres always a wrong way to do something right but this was not the way

My instinct made me think about bolt cause that’s what goes there, he can still remove the balancer and then bring his attention back to the extension that could possibly have damaged the crank

 

You should not use an extension to push against in order to remove the harmonic balancer but if you was going to then at least make sure it's not going to interfere with the crank threads. This is where allthread comes in handy or using an old crank bolt by cutting the head off. The right tool for the job makes all the difference.

 

Hes obviously already mangled it,
he could get a deep socket over the extension with a metal cap to push against with the puller

yes he should of used an old crank bolt with threads cut off

 

All of this reeks of a rush rush job. There's something to be said about taking your time and using the right tools

 

$33

OP may just luck out and be able to clean up the threads. If you have the correct tool and use it correctly.

 

The motto in my professional trade is, do the job right the “first time”. Always stuck with me

 

From his description, sounds like he used the extension as the thing for the puller to press on rather than pressing directly on the crank itself which might have also ended badly, butt it got stuck in a recess further down below the threads; and the threads themselves aren't damaged. I don't know if any of that is true of course. I don't personally know exactly what the topology of the bolt hole is for example. I can't see the pics so I don't know if that's true. I'll wait for the OP himself to clarify. Sounds like the exercise at hand is to pull the extension out and see what, if anything, is mangled. Meanwhile, all the "should have" and "I always" type stuff, while it makes whoever posts it feel good about being superior to him and maybe incidentally happens to be true as well, doesn't really help him.

 

**** happens!

I was swapping out valve springs on my car using the rope method and after doing the driver side I shut it down for the night. Went back to work on it that following evening and was using a remote start switch to roll the engine over while watching for the valve events on No.8.

After a few attempts I realized that I had forgot to remove the rope from No. 7.

 

Everyone in here has offered some type of advice or recommendation, nobody in here is trying to feel good about this or by being superior to him in any way whatsoever.

It appears the extension is buried deep into the crank snout and likely chewed up the threads. Not the end of the world but a lesson learned nonetheless.
We’ll find out if he gets back to us and hopefully everything is salvageable