Here is a couple of pictures of a piston. What can be learned from these? They have a stamp mark on the inside that says sep 89, is this a date? Are they ok with new rings if the size is right?
They are probably Sealed Power or Silvolite or Nylen pistons.
Really doesn't tell much other than how old they are.
I'd have to see the outside of the piston and what the lower outer portion of the piston looks like for wear. Also what do the rod bearings look like? Crankshaft journal surfaces? Can you rock the piston on the rod as that will show if the wrist pin bushings are worn.
As I mentioned this morning the cylinder walls aren't healthy so I would still say while it's apart do it right and get it rebuilt by a reputable rebuilder.
That has the equipment to do all the work by today's standards not a backyard weekend warrior.
In restorations, many times when the money gets thin the running gear and motor are the parts that are cut in the corners and suffer. This is because they can be doctored up with quackery and the buyer or owner is none the wiser or just don't care. It's all about the looks, bling sells.
Agree. And many owners barely drive the car, maybe for an ice cream or to church and the rest of the time it sits in the garage as a pretty thing to look at. And even though poorly built, the engine handles such menial tasks OK. Then another owner comes along who expects more, wants to tour, etc, and all he** breaks loose with the motor but the rebuilder now is so far removed from the picture that he gets away with it again. Have seen this time and again.
So is the Sep 89 the date the piston was manufactured?
It's a shame there are so many *** holes that knowingly sell broken worn out junk while lying about it! That's why I like to get stuff from friends, because when I get something at a swapmeet, I get it home , and then see why it was for sale. Argh!