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11-03-2020, 04:43 PM | #1 |
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Stuck block two questions
I’m trying to strip down a stuck 221cu in block.
1. I can’t get the 9/16 socket to get onto the connecting rod nuts, is there a special socket, wrench for the job. 2. I need to bust out the pistons but I don’t want to hurt the rods, any particular tool or punch, chisel size I should use or procedure. Thanks |
11-03-2020, 04:57 PM | #2 |
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Re: Stuck block two questions
Take a hole saw and cut a big hole in the top of the pistons. Then break the rest of the piston and the rod should move.
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11-03-2020, 04:57 PM | #3 |
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Re: Stuck block two questions
Be very careful with the pistons, it is easy to crack a cylinder wall. Need to start by drill out as much of the center of the piston as possible.
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11-03-2020, 05:19 PM | #4 |
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Re: Stuck block two questions
If it's a good quality socket, just grind it down. Jack E/NJ
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11-03-2020, 06:40 PM | #5 |
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Re: Stuck block two questions
Check some of my videos. I've shown piston removal. Learn from my mistakes and don't do it like I did it. I cracked a cylinder.
You will need to grind a socket down. If the motor is stuck, you might need to also grind various wrenches to get onto those nuts. How not to remove pistons. https://youtu.be/SlYZGlONTYs How to remove a crank from a stuck motor: https://youtu.be/b-dPIVcy1sM Re the pistons. My mistake was to try and remove one that still had the full circumference of the crown in place. All the others had at least a part of the circumference missing and came out ok. Mart. |
11-03-2020, 06:41 PM | #6 |
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Re: Stuck block two questions
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Last edited by Mart; 11-03-2020 at 06:46 PM. |
11-03-2020, 07:53 PM | #7 |
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Re: Stuck block two questions
There are 1/4" drive swivel sockets made . We used them in Aircraft work- Snap-on ?? Newc
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11-03-2020, 10:50 PM | #8 |
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Re: Stuck block two questions
Rods are cheap, last one I had to do I torched a few of the rods so I could get the crank out and concentrate on saving the block. I'll sell you a set of 221 rods for $50 if you need them.
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11-03-2020, 11:08 PM | #9 |
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Re: Stuck block two questions
Like yoyodyne I have boxes of rods. I sometimes not only cut the rods with a torch but drill the top of pistons with hole saw. And don't forget to set the whole thing on fire with a circular wick in the cylinders floating in brake fluid, mmo, paint thinner, diesel and other vaguely flammable liquids. Not gasoline ever!
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11-04-2020, 01:13 PM | #10 |
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Re: Stuck block two questions
Take it down to a machine shop and have it hot tanked.
It will eat the pistons and give you a clean engine to work with.
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11-04-2020, 05:14 PM | #11 |
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Re: Stuck block two questions
Chuck the motor into a drum of water and let it soak for 4 to 6 weeks, then take it out the water and use a suitable piece of wood as a drift and tap the pistons up and down the bores. If they still wont come out, soak another week or two. I have stripped many motors and gearboxes this way.
water caused the rust and water will penetrate and dissolve it better than any penetrating oils, believe me it works. |
11-05-2020, 09:13 AM | #12 | |
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Re: Stuck block two questions
Quote:
How can this work. much less not cause further rusting? "big job" - I'd sure like to know what it was your father threw in the drum of boiling water! |
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11-05-2020, 09:20 AM | #13 |
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Re: Stuck block two questions
Probably Washing Soda - Sodium Carbonate. I do the same, but I don't boil it, I use a bucket heater from tractor Supply. I think I've posted a photo here of how well it works. Cleans that old black flathead gunk right off. I use TASC, it's washing soda mixed with surfactants and detergents and etc, but you can use straight washing soda to good effect.
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11-05-2020, 09:44 AM | #14 | |
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Re: Stuck block two questions
Quote:
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11-05-2020, 01:52 AM | #15 |
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Re: Stuck block two questions
Regarding the socket, grind one down, as posted by Jack and Mart, Posts 4 and 5.
Back in the day, it was possible to BUY a socket for this job. Regarding cracked/broken cylinders... I've been there/done that. Pay attention to Mart (or others that caution you). |
11-05-2020, 09:06 AM | #16 |
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Re: Stuck block two questions
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11-05-2020, 07:13 AM | #17 |
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Re: Stuck block two questions
all I can add is back as a teen block in a 55 gal drum with water and lit a fire not long
water started bubbling and I kept stoking the fire. My father poured something in the boiling water I suspect lye but I didn't ask that did the trick and block came out super clean. |
11-06-2020, 01:55 AM | #18 | |
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Re: Stuck block two questions
Quote:
Soda Ash or Sodium Carbonate is a cleaner and stain remover. Safer to use but, won't clean, anything like a heated, or even cold, Sodium Hydroxide solution.
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11-06-2020, 04:53 AM | #19 |
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Re: Stuck block two questions
Use care with lye, and you will be fine. Thousands of pioneer women made soap with it. Folks from Scandinavian countries use it to prepare ludefisk.
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11-06-2020, 07:40 AM | #20 |
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Re: Stuck block two questions
Thanks for the rod offers guys, at this point I am just trying to salvage as many spare parts off the block as I can. I have two blocks given to me by a friend, one bare and one with a crank and cam in it. Most of what I’m doing is for the learning experience and if I get a few spare parts from it I’ll be happy. I was able to grind down a spare 9/16 socket so will see how that goes.
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