used pistons worth anything?

There's always a chance that someone disassembling his used engine may find a cracked, badly scored or broken piston. Rather than replacing all of them with an expensive and time-consuming new set of pistons, he'd sure like to buy or be gifted a used piston of the same bore and brand name. 'Might get him another few thousand miles or driving seasons before a proper engine rebuild is possible. If your old pistons don't take up too much storage space at your house, stash them away for a future needy Model A owner on a tight budget (i.e., his wife is watching over his antique car expenses like a hawk watches a field mouse).
Marshall
 
Scrap, great if you have an aluminum foundry and casting setup at home.

Used pistons collapse and are useless even if it matches the bore.
 
Scrap, great if you have an aluminum foundry and casting setup at home.

Used pistons collapse and are useless even if it matches the bore.
 
Car art & trophies
 

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I have put used pistons in quite a few engines— they weren’t worn out ones though
My modern car (Mercedes diesel) has used pistons,rings,rods and bearings from at least 8 different engines— burned quite a bit of oil at first but now 75,000 miles later it has calmed down to a quart before it is due for oil change.
My smith’s compressor is bored .027 oversized to use worn .030 pistons.
their usefulness is determined by the wear and size.
 
Katy, I will post pics of the sets I have and size. I don't know enough about to check for condition so I will let the pics speak for themselves. There are no gouges, scores of damage that I can see. I also have not used my micrometer on them either.

Mike
 
Katy, I will post pics of the sets I have and size. I don't know enough about to check for condition so I will let the pics speak for themselves. There are no gouges, scores of damage that I can see. I also have not used my micrometer on them either.

Mike

They may be stamped on top, .030 or whatever. If no stamps they're probably stock, but not necessarily.
 
The pistons I have in boxes are .040 and .050 stamp on the top. Here are some pics of them. I think I also have it’s either .060 or .090 in a bucket with rods still attached. If anyone has a use for them they can have them. If not they will get scrapped.

Mike
 

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To me those look like they're quite usable Once they're soaked in carburetor cleaner and the ring grooves are spotless They appear to be in good enough condition to use they don't have deep scoring Like worn out pistons would. The proof will be when checking the clearance in the bore.
 
Earlier this year or maybe late last year, I sent four matched used .100 pistons to a fellow who advertised here for just one to replace a broken piston in his engine. I sent all four so that he could select the best one. This saved him from buying a new set of pistons and rings and honing the wrist pin bushings, and so on. Had I thrown these pistons away when I removed them years ago, here is one man who wouldn't have saved a fortune and the hassle of buying and installing new pistons. All for the cost of shipping them to him one way.
Food for thought...
Marshall
 
Here's what someone over on the H.A.M.B. made from one:
 

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