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Piston Quandary 444-544

posted by  volvo65 on  Sun Dec 14 07:42 CST 2008
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last visit: Sat Aug 21 09:29 CST 2010
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Season's Greetings!

I have a set of B18 pistons out of a '65 Volvo 544 that are stamped:
Front
84.891B (#1 & #4) or 84.881 (#2 & #3)
SP 0.019
109 R09 030

I used a digital caliper (Cen-Tech) and measured the #1 piston. According to the caliper it measured 84.14 at the top and 84.79 at the bottom.

First question: I have checked out the caliper on other items and is seems to be pretty close, why the difference between what's stamped on the pisto and what the caliper says.

Second question: Is it unusual for the top and the botton of the pistons to have different diameters?

Any insight you can provide will be greatly appreciated!

--
'61 PV544 - '65 PV544 - '64 Lincoln Continental






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New Piston Quandary [444-544]
posted by  volvo65  on Sun Dec 14 07:42 CST 2008 >


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