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Oil Field Engines & Related Equipment

Finally found a Superior!


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  #21  
Old 06-13-2011, 10:57:29 PM
DougMixter DougMixter is offline
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Default Re: Finally found a Superior!

Try giving this a try it worked for me I had three 35hp superior all stuck and manage to get them all unstuck by doing the following, get the greatest amount of pressure on your jack you have mounted in your bore you can( I did the same as you but used a 100 ton jack and made a jig that mounted to the head bolts). Seconed, I made a fire in the water jacket using a mixture of gas and used motor oil. Be sure the fire is complety out before adding more to it, then keep the fire going until the piston is hot enough to boil water once you reached this point the fun begins, take you garden hose and spray the inside of the piston, not the bore. If it doesnt pop lose do it again but get it hotter and apply more pressure. GOOD LUCK
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  #22  
Old 06-14-2011, 09:37:36 AM
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FWurth FWurth is offline
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Default Re: Finally found a Superior!

Doug, spraying cool water on a hot castiron piston sounds like a good way to crack the casting. Been there, done that, don't want to repeat past mistakes. Heat,pressure, and patience. Good luck. F.J.W.
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Old 06-14-2011, 11:02:34 AM
DougMixter DougMixter is offline
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Default Re: Finally found a Superior!

Do it any way you like, I am just trying to help the guy out. Like I said, I have three 35hp superiors that were all unstuck by using this methed, it works great and never broke anything other than a sweat. I was taught this by an old time engine guy many years ago at coolsprings engine show, he has done over a dozen this way. Your not getting it red hot your just getting it hot enough to expand the cyclinder and the water helps srink the piston. I agree that you need Heat, pressure and lots of patience but I think adding the water to it may be what you need to pop it lose. Their is alot of surface area on a piston that big its going to take all the tricks you got to get it out.

To Fwurth I'm sorry you broke your piston trying this method maybe its all that hard water in Illinois, just a joke. Sounds like the part was already craked or way way to hot when you hit it with the water. better luck next time
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Old 06-14-2011, 08:12:19 PM
Jeff Miley Jeff Miley is offline
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Default Re: Finally found a Superior!

Doug: Thanks for the idea. I had been thinking of a way to heat the cylinder and had not considered building a fire in the water jacket. Even a small amount of heat will expand the cylinder somewhat. I few thousandths would mean alot. I could keep the piston cool during the process from the rod end as it is at the bottom end of the stroke. This will reduce any thermal shock to the cast piston. You say you used a 100 ton jack. I was not aware that so much force could be exerted without damaging something. I will keep soaking and start to ramp up the force a little. I want to add some heavier chains first. Then, if nothing gives over time I will try some heat. Thanks for all the ideas. I will keep you posted as to my progress. If it was easy it would not be any fun.
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Old 06-14-2011, 09:14:16 PM
Andrew Mackey Andrew Mackey is offline
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Default Re: Finally found a Superior!

I used a #6 turbo-tip on a B tank of Acetylene to heat the water jacket and cylinder on our Oil City/South Penn engine. The engine's head had been removed, and the torch tip was placed into the water jacket spaces for 5 minutes at a time, aimed at the cylinder. The torch was moved to every other hole (there were 7), until you could no longer touch the outer jacket with your bare hand. Water was sprayed into the interior of the piston with a spray rig, while the outer surface of the piston and cylinder interior was sprayed with liquid wrench and kerosene. The piston was then bopped with a heavy chunk of brass, and it came free.
Andrew
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Old 06-14-2011, 10:30:56 PM
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Keith Kinney Keith Kinney is offline
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Default Re: Finally found a Superior!

I sold a badly stuck 25 HP Superior to a guy. I asked him how he planned to get the piston out. He said he had a back hoe with a jack hammer attachment. He made a heavy plate to put in place of the chisel. Put the plate on the piston and fire up the jack hammer. He said it works every time.
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Old 06-15-2011, 08:12:43 PM
Jeff Miley Jeff Miley is offline
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Default Re: Finally found a Superior!

I appreciate all ideas but I think I may save the jackhammer one as a last resort. Sounds just a bit rough.
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Old 06-17-2011, 06:07:30 PM
Jim Cook Jim Cook is offline
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Default Re: Finally found a Superior!

I am the jackhammer guy. I've gotten at least a dozen or more unstuck for myself and more for other guys, including the superior Keith is talking about. It's alot easier on things than a bunch of heat. The hammer pounds on your tool not on the piston, the weight of the backhoe keeps the tool tight against the piston. Most of the time it even shakes the rings loose. Good luck. Jim.
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Old 06-17-2011, 07:26:32 PM
Jeff Miley Jeff Miley is offline
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Default Re: Finally found a Superior!

Thanks for the input jackhammer guy. I will not rule anything out. That is why I asked for input from those who have done this before. If I did not hear any new ideas I would not learn anything. What type of plate did yoy make for over the piston? Did you use any wood for a cusion between the hammer and the plate? Ever have any failures?
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  #30  
Old 06-18-2011, 11:08:57 AM
Jim Cook Jim Cook is offline
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Default Re: Finally found a Superior!

I have heavy rings of different sizes cut so it only hits on the outside of the piston. With the weight on it, its more vibration than hitting. I have not broke one yet. I'm sure yours would pop out. Jim.
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