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By Butch Lawson - 5 Years Ago
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I have two sets of used 312 pistons, one standard and one .030 over. I need to clean out my garage. Are used piston of any use, or should I just send them to scrap?
Butch
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By charliemccraney - 5 Years Ago
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Should be good as long as the ring lands are in spec and wear is reasonable.
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By Butch Lawson - 5 Years Ago
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Thanks Charlie. I'll hang on to them for a while longer.
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By FORD DEARBORN - 5 Years Ago
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Are those 312 standard size pistons original equipment survivors? If they are I believe they will have a higher compression height compared to replacement pistons. Stay safe everyone............
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By Hoosier Hurricane - 5 Years Ago
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While it's not likely to find a 312 block with unworn bores that could use those standard pistons, a 292 can be bored .050 oversize and use standard 312 pistons. It could also be bored .080 oversize and use the .030 312 pistons. Surely someone can use them.
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By FORD DEARBORN - 5 Years Ago
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If the standard size 312 pistons you have are indeed original equipment survivors, the compression height should be aprox. .025 higher than replacement pistons. That's a huge difference in regards to compression ratio. Looking at my notes, the aftermarket Silvolite pistons measured 1.302 from the upper wrist pin bore to piston top. Checking a genuine ford 312 piston, that dimension is 3.327 So, if your standard 312 pistons are still serviceable and have the higher compression height, that would be great for a street rebuild. As stated above, 292 can be bored to use them. Stay safe everyone, JEFF....................
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By Butch Lawson - 5 Years Ago
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Thanks everyone. If anybody needs these, shoot me a PM. I really need to clean up around my garage and I'll never use them.
Butch
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By Tedster - 5 Years Ago
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"I really need to clean up around the garage."
Is that ... we can do that??!
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By MoonShadow - 5 Years Ago
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There are some corners in my garage that have been kept "socially distant" for years. I'm no sure its safe to go in there right now!
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By FORD DEARBORN - 5 Years Ago
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PM sent?
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