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Perfect Circle Ring Set Identification
#1
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Packard Don
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Does anyone have an old Pefect Circle catalog? I came across some new piston rings in my shop that probably either go to 1940 110 or possibly a later 327. They have S 5797 STD-.01 printed on the boxes - can anyone identify them in relation to Packard? Of course, I know what STS- 01 means!

Posted on: 2018/1/17 3:24
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Re: Perfect Circle Ring Set Identification
#2
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Marty or Marston
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Mahle took over Perfect Circle. You might give them a call and ask them. The phone number for their USA offices is 1-800-223-9152.

Good Luck

Posted on: 2018/1/19 11:42
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Re: Perfect Circle Ring Set Identification
#3
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BDeB
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1948-54 engines with 3-1/2'' pistons according to this eBay listing

eBay Piston rings, Perfect Circle

Posted on: 2018/1/19 20:46
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Re: Perfect Circle Ring Set Identification
#4
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Packard Don
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That's great and is exactly what I wanted to know! Since my own set is missing one and is the same oversize as those on eBay, I went ahead and bought them to complete mine. I was hoping they went to the rebuilt but still disassembled 1940 110 engine that I have which also has 3 1/2" pistons but I'll settle for them fitting a 327 that I have in similar condition.

Posted on: 2018/1/20 14:00
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