Stuck piston delema
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Laughing Gas
Joined: Jul 2001
Posts: 849
Likes: 14
From: Fayetteville, NC
Stuck piston delema
[updated:LAST EDITED ON 23-Dec-01 AT 00:06 AM (EST)]Does anyone have any suggestions on how to remove a tuck piston. I have tried knocking it from behind and from the front and I can't get it to come out of the block. Any ideas folks 
1978 F-150 flareside. Primitive by todays standards but she was a jaw dropper back then. :-staun
1978 F-150 flareside. Primitive by todays standards but she was a jaw dropper back then. :-staun
Posting Guru
Joined: Jan 2000
Posts: 1,899
Likes: 1
From: Cullman Alabama
Stuck piston delema
It sounds like you have the block out and opened up.Try soaking the piston with Kerosine. Leave it in there for a couple of days.
Then get a 2X4 to use as a Punch, and tap the top, then the bottom of the piston untill it gives up.
Dont forget to take the Rod loose from the Crank.
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Laughing Gas
Joined: Jul 2001
Posts: 849
Likes: 14
From: Fayetteville, NC
Stuck piston delema
yeah...it's a 429 I'm working on. It's sitting on my engine stand. Everything else is out (crank, cam, etc) except for this one piston. I've soaked it in WD-40 from the front and back but that didn't help much. It'll move about 1/2" back and forth but that's it. There is some rust on the top of the cylinder wall but that didn't stop the other 7 from popping right out so why this one....
1978 F-150 flareside. Primitive by todays standards but she was a jaw dropper back then. :-staun
1978 F-150 flareside. Primitive by todays standards but she was a jaw dropper back then. :-staun
Freshman User
Joined: Dec 2001
Posts: 37
Likes: 0
From: fortworth usa
Stuck piston delema
I have used diesel fuel to break up the rust before. It that doesnt work try and find some Kroil...it is a great lubricant and breaks up rust like gang busters, I use it in my work and havent found much it wouldnt break loose. It comes in an orange container, if you have a bearing supply house or something similar you might find it there.
As for the method of removing it a landscape timber sawed off might work as a punch and a really big dead blow mallet too...
Good luck
As for the method of removing it a landscape timber sawed off might work as a punch and a really big dead blow mallet too...
Good luck
Fleet Owner
Joined: Jun 1999
Posts: 24,552
Likes: 74
From: Creedmoor, North Carolina
Stuck piston delema
Robert, Soaking might help, but it sounds to me like it's time to get the ol perswader out. That 2X4 and BFH needs to be applied and get this process over with. If it is moving 1/2" it aint stuck. 
hmm, that boy needs to reload that right pistol, it seems to be empty. Hey Ken, more ammo please.
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John
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In the cool still quiet of night, you can hear chevies rusting away.
hmm, that boy needs to reload that right pistol, it seems to be empty. Hey Ken, more ammo please.
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John
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In the cool still quiet of night, you can hear chevies rusting away.
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Laughing Gas
Joined: Jul 2001
Posts: 849
Likes: 14
From: Fayetteville, NC
Stuck piston delema
[updated:LAST EDITED ON 23-Dec-01 AT 11:27 AM (EST)]So basically I just need to keep pounding the crap out of it eh'? Hmmm....this sounds like the perfect opportunity to let some holiday frustration out. heheh 
1978 F-150 flareside. Primitive by todays standards but she was a jaw dropper back then. :-staun
1978 F-150 flareside. Primitive by todays standards but she was a jaw dropper back then. :-staun
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Senior User
Joined: Jun 2000
Posts: 122
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From: NE Oregon
Stuck piston delema
Another thing that works is to put a piece of rag soaked in diesel fuel into the cylinder in question, light it and set the head back on. After it burns for a bit, it'll have a lot of heat in the cylinder/piston and may well come loose. This works very well on diesel engines as well (tip from folks who restore crawler tractors that have been sitting out in the weather for years.)
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Thread Starter
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Laughing Gas
Joined: Jul 2001
Posts: 849
Likes: 14
From: Fayetteville, NC
Stuck piston delema
Well...I finally got it out today. I just kept wacking at it and after about 15 min or so it came out. Thanks ya'll!
1978 F-150 flareside. Primitive by todays standards but she was a jaw dropper back then. :-staun
1978 F-150 flareside. Primitive by todays standards but she was a jaw dropper back then. :-staun
