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Ranger Member
Joined: Apr 10, 2011 Posts: 18 Location: Houston TX
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Posted: Sun Apr 17, 2011 12:50 pm Post subject: Stuck piston |
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I'm working on a F134 that's has severe pitting in #4 cylinder, I'm trying to get the piston out through the bottom and the piston just wont budge. I have soaked it in penetrating oil and hit it on top with a hammer and block of wood.
Any advice on how to get it to move? |
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wesk Site Administrator
Joined: Apr 04, 2005 Posts: 16355 Location: Wisconsin
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major519 Member
Joined: Dec 09, 2010 Posts: 90 Location: Nipissing Ontario
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Posted: Sun Apr 17, 2011 1:32 pm Post subject: |
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I agree with Wes on this one. Having taken dozens of old flathead motors apart over the years, I have had to get ugly on them soemtimes.
Diesel works; sometimes. I have even lit up the block before using a half and half gas diesel mix. Sometimes the heat will allow the piston to break free and at least allow the rest to wick down.
A BFH and a hardwood block is the key... |
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Jim Member
Joined: Apr 14, 2005 Posts: 196 Location: Van Buren, Arkansas
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Posted: Sun Apr 17, 2011 3:49 pm Post subject: |
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Set a block of dry ice on the piston top. Try the BFH
and wood after it evaporates.
PS: Loved Kelly's Heroes!
Jim in Darkest Arkansas |
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Ranger Member
Joined: Apr 10, 2011 Posts: 18 Location: Houston TX
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Posted: Sun Apr 17, 2011 5:04 pm Post subject: |
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Didn't have any diesel so I put lighter fluid in it, tomorrow I'll light it and let it burn. Then I will hit it with the BFH and see what happens. |
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Balvar24 Member
Joined: Sep 05, 2009 Posts: 191
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Posted: Sun Apr 17, 2011 7:13 pm Post subject: |
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The piston is probably shot. You could get the die grinder out? |
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wesk Site Administrator
Joined: Apr 04, 2005 Posts: 16355 Location: Wisconsin
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Posted: Sun Apr 17, 2011 10:11 pm Post subject: |
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The key to success with old car restoration is PATIENCE, determination, humility, and attention to detail.
The Patience is a virtue when dealing with penetrating fluids. 20 years of corrosion does not yield to 30 minutes of penetrant and hammering.
Shattering a piston to free it up with brute force should always be a last resort. The chance for collateral damage is too high. I've seen guys ricoshet off the piston and drive a hole right thru the cylinder wall. I've seen many a rod bent that way as well. There are a hundred other restoration things you can do this week while that piston soaks for a week in diesel. The gallon of diesel will only cost $5.
We were all 17 once and rambunctious and impatient. Here's your chance to take advantage of all of us old farts who can tell you the stories of how we screwed it all up and save you the expense of screwing it up on your own! _________________ Wes K
45 MB, 51 M38, 54 M37, 66 M101A1, 60 CJ5, 76 DJ5D, 47Bantam T3-C & 5? M100
Mjeeps photo album: http://www.willysmjeeps.com/v2/modules.php?set_albumName=Wes-Knettle&op=modload&name=gallery&file=index&include=view_album.php |
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DaveM38A1 Member
Joined: Oct 28, 2008 Posts: 99 Location: Fuquay-Varina, North Carolina
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Posted: Mon Apr 18, 2011 7:38 am Post subject: Stuck piston |
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I have an engine with a stuck piston. I made a plywood disk the size of the cylinder bore and beat with a 2X4 after soaking in diesel fuel and ATF for bout 3 weeks. The others got out, but this one is stuck. finally used a 2 inch socket and extension with the wood under the socket and moved it. Now its in the soak again. We will see, the cylinder bores don't look bad. it just sat out in the weather too long.
I hope I can get it running without too much expensive machining.
I agree, patience is what is needed, to avoid costing more money.
My other engine runs, but pumps oil out the tail pipe. Took off the head and No. 2 piston is missing a chunk and No. 3 exhaust valve is stuck. Probably rings are stuck also. So no matter what it looks like some machining work is in my future.
Dave |
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Ranger Member
Joined: Apr 10, 2011 Posts: 18 Location: Houston TX
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Posted: Mon Apr 18, 2011 3:37 pm Post subject: |
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I'm taking the whole engine to a machine shop, the owner, Jack is a friend of mine. He's going to inspect the block and do the mill work for me, hopefully I can work out some sort of deal with him and make it less expensive.
Still haven't got the piston out though. |
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RimfireJim Member
Joined: Feb 28, 2011 Posts: 148 Location: Escondido, CA
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Posted: Mon Apr 18, 2011 3:54 pm Post subject: |
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Ranger wrote: |
Still haven't got the piston out though. |
You're still only on Day 2 or so. Like Wes said, give it a week or so.
The most entertaining books I've read on the restoration process are Roger Welsch's "Old Tractors and the Men Who Love Them: How to Keep Your Tractors Happy and Your Family Running" http://www.amazon.com/Old-Tractors-Men-Love-Them/dp/0760301298/ref=pd_sim_b_1 and "Busted Tractors and Rusty Knuckles: Norwegian Torque Wrench Techniques and Other Fine Points of Tractor Restoration" http://www.amazon.com/Busted-Tractors-Rusty-Knuckles-Restoration/dp/0760303010 They aren't "how to" books per se, but more about the trials and tribulations, the value of patience, and the thought process. And a lot about getting stuck parts loose, including pistons. Recommended reading for old Jeep restorers, or I should say, for new restorers of old Jeeps. _________________ Jim M.
1952 M38 son-father project
Discovering more worn out parts, one assembly at a time |
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Balvar24 Member
Joined: Sep 05, 2009 Posts: 191
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Posted: Mon Apr 18, 2011 4:12 pm Post subject: |
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I just hope mine is as easy to put together as it was to take apart! |
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RICKG Member
Joined: Aug 31, 2010 Posts: 1744 Location: SO IDAHO
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Posted: Wed Apr 20, 2011 11:47 am Post subject: |
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Jim wrote: | PS: Loved Kelly's Heroes!
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Hey, Ranger, did you ever notice in Kelly's Heros, during
the retreat from the barn after the death of the german colonel,
as the men are resting along the convoy the jeep following
Pvt Little Joe's jeep was a M-38 not produced till 1950??
(always with the negative waves, right??) _________________ keep 'em rollin'
RICKG MC 51986 DOD 01-52, '50 CJ3a |
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Ranger Member
Joined: Apr 10, 2011 Posts: 18 Location: Houston TX
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Posted: Wed Apr 20, 2011 5:45 pm Post subject: |
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RICKG wrote: | Jim wrote: | PS: Loved Kelly's Heroes!
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Hey, Ranger, did you ever notice in Kelly's Heros, during
the retreat from the barn after the death of the german colonel,
as the men are resting along the convoy the jeep following
Pvt Little Joe's jeep was a M-38 not produced till 1950??
(always with the negative waves, right??) |
No, I never noticed that, but I'm not much of a jeep person. I turned into a jeep person 2 weeks ago when I got this thing. |
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JAM Member
Joined: Feb 26, 2011 Posts: 81 Location: Spanish in Venezuela
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Posted: Thu Apr 21, 2011 8:24 pm Post subject: |
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Excuse my ignorance of terminology;
what do you say BFH? |
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Jim Member
Joined: Apr 14, 2005 Posts: 196 Location: Van Buren, Arkansas
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Posted: Thu Apr 21, 2011 8:50 pm Post subject: |
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Hi, Jam, well, ah, let's just say, "Big Favorite Hammer" OK?
This is a family forum. |
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