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Post Info TOPIC: Stuck Six...


Poncho Master!

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Stuck Six...


Got a stuck 261....that was sitting for 30 years.

Going to dose the old dear......

I've used ATF and or  diesel fuel...before.....Somebody said mix them.....

How about Move-it  penetrating oil...or Seafoam?

Any input is appreciated



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A Poncho Legend!

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Never tried it but I've always been told the ATF/Diesel mix is the secret potion!

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Yes the Diesel ATF solution worked in my experience. 



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Canadian Poncho Superstar!

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I'll second that!!! Have used ATF & diesel mix on a few engines to get them to free up. After giving cylinders a good shot I try and put a load on crank pulley by using a jack and socket & breaker bar & let it sit with torque applied to break it free.



-- Edited by dualquadpete on Friday 24th of April 2020 07:08:05 AM

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dualquadpete wrote:

I'll second that!!! Have used ATF & diesel mix on a few engines to get them to free up. After giving cylinders a good shot I try and put a load on crank pulley by using a jack and socket & breaker bar & let it sit with torque applied to break it free.


Pete, how much time should you allow to let the secret potion do its job before applying a load to try and unstick the engine?  Do it immediately?



-- Edited by 68 Grande on Friday 24th of April 2020 11:21:58 AM

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Canadian Poncho Superstar!

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Like I said dose up the cylinders, then apply pressure to crank bolt & walk away for 24 hrs  You can let the cars weight work on breaker bar & socket with axle stand on bar or use a jack!!! with pressure applied. Not a guarantee it will work 100% of the time, but worth a shot. Did a 57 Olds this way & it broke free.



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Poncho Master!

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Ok.....drugs...have been administered.....

Not being very familiar with this engine....I'm kinda scratching my head...as to how I can roll it over....

Are there some threaded bolt holes in crank damper?

This one has an Iron glide.......and I don't recall seeing a cover...to expose ring gear...



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Can you put a socket on the crank hub bolt?


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Poncho Master!

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That...was my first thought........I let my fingers....do the walking.....and they didn't find one...



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I have put a socket on the generator pulley nut to try to roll the engine. Sometimes they move a bit and you could rock it back and forth. I have also removed the starter to pry the ring gear. Time is your friend. Unless its really rusty on the cylinder walls it should free up. I did get one running that sat in a barn for twenty years running after adding diesel fuel and trans fluid to the cylinders. I let it sit for a couple of weeks. If the spark plugs were really rusty when you pulled them out you probably will need to pull the engine apart.

Paul

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Poncho Master!

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Good call....on starter /ring gear access...

 

Generator and brackets were robbed....but engine was covered with hood....plugs came out nice   and no sign of water/rust....so hopefully it will break free..

I will let the brew "cook"...for 2 weeks......and give it a whirl..

 

Had a stuck Pontiac 400...years ago......Soaked the rings   let it sit.....

Couldn't move it with a breaker bar on the crank.....

 

I installed a battery.....hit the key....and the starter did the job......

 

It actually ran pretty good.....after I fussed with it...

 

 



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Former owner of........Who really CARES?

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All very good points here. 



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MoboMac, keep us posted, I want to know if you succeed!

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Poncho Master!

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Any updates ? Get it rolling .....

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Guru

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Its nice that this thread has been revived. On another forum that I frequent a poster was trying to free up a six cylinder in a military truck. He removed the cylinder head and found one cylinder that was very rusty. To get the piston to move he but some diesel fuel in the cylinder along with a rag soaked with diesel fuel. He lit the rag and let it burn until it burned up the diesel in the cylinder. With the resulting heat buildup he was able to move the piston with a hammer and block of wood. This allowed the engine to be disassembled without any additional damage. Although it needed a sleeve, the engine was able to be saved.

Paul

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Poncho Master!

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Its always good when something vintage is saved.

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Canadian Poncho Superstar!

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Just a question on earlier points in this thread.
After you apply the diesel/ATF potion when putting a load on to turn the engine do you have to apply the load so that if it breaks free it will turn in the direction of normal rotation? Or does it matter?

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Poncho Master!

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I would say it doesn't matter...because 1/2 of the pistons are going in opposite directions..

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Poncho Master!

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Just a quick update here....

I can't believe it's been 14 months since I posted.....

Got going in many other directions...and hadn't given this project much thought..

Will try and get back on it and update asap..

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Former owner of........Who really CARES?

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Poncho Master!

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If anything turn it so the crankshaft bolts stay tight.
No sense unbolting them without turning the crank.

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Poncho Master!

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Ok......Thanks to the nudge here....I decided to have a looksee today.

Had previously removed rad support and radiator...which gave a lot more access to the crank pulley.

There were 2  3/8" holes in the crank damper....so we cleaned them out and found some threads...

Ran the tap through  and went bolt hunting...

Didn't take much with the 2 foot bar to get it moving....

Went around one and a half revolutions and it got tighter .Stuck valve maybe?

Will pull the plugs and investigate tomorrow....

To be continued...............



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Former owner of........Who really CARES?

The Wall of DEATH

 

https://www.youtube.com/watch?v=nQRFkgWuM40

 

 

 

 

 

 

 

 

 

 

 

 

 

 


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